Barn Find Benelli 750 SEI - Unseizing The Engine! - How Bad Is It?

Barn Find Benelli 750 SEI - Unseizing The Engine! How Bad Is It? In this video I finally take a little time to work on the rare Benelli SEI I drug out of a barn last year. Having now obtained the correct socket to remove the park plugs I am able to inspect the cylinders and determine the cause for it being seized. Watch as the bike takes a big step forward with getting it unseized and having more hope for revival down the road.
The first episode where I found the bike: • BARN FIND Benelli 750 ...
Unseizing the engine on my 1975 Honda CB750: • Unseizing A Motorcycle...
Engine inspection on my CB750: • Barn Find CB750 Health...
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#brickhousebuilds #barnfindmotorcycle #benelli750sei

[@JohnnyRizon]

The largest virus on KZbin is people telling you "You're Wrong!". Ill never understand why people cant understand that theres more than one way to do almost everything-- and that their way isn't the ONLY way.. the best learning is being able to understand all angles all the time.. I just found your channel and love the content- Thank You for sharing your adventures with all of us

[@BrickHouseBuilds]

Thanks so much and I obviously agree on that. I've had people get upset with me for the smallest things lol

[@carlwill5009]

I used to do the same thing back in the seventies and eighties with old Yamaha 2 strokes bikes.

[@bradsoole]

Dude this is perfect candidate to do a custom from a rare bike. It's not complete. If it was a complete unmolested bike them maybe not but this is perfect.

[@BrickHouseBuilds]

Exactly!

[@colderwar]

Just for the future, be wary of that large nut on the end of the crank, on the points side. If it's the same as the CB500\550 Hondas, and I'm almost certain it is, that nut will have a couple of tabs which engage in slots in the crank. The nut is actually held on by a seperate ( M6 ? ) bolt that threads into the crank. To finally get to the point, those two tabs are the only thing that's stopping it from spinning, and if you use the nut to turn the engine over with the plugs in, the tabs can shear off because they are weak. Maybe you can just buy a new nut these days, but back when I was working on them, a lot of the smaller spares were a problem because no-one cared about the bikes, they weren't old enough or well thought of enough to be desireable. My friend has a SEI that he's selling and I could afford it, but I have to accept that because of too many injuries my riding days are over. I'd love to turn that into a classic race replica similar to your plans. Oh well.

[@BrickHouseBuilds]

Definitely aware. Its the only position to rotate from so no other choice here. I'm very careful while doing it

[@Daniel-lv8ze]

I had to replace the entire crank on my 500 because I broke that bolt, then the extractor. Made me furious

[@coolmonkeymc8268]

Patient methodical mechanic,rare thing indeed !

[@BrickHouseBuilds]

🤘🤘

[@Dynamic-cb9jy]

Awesome work👍👍👍

[@BrickHouseBuilds]

Thank ya!

[@DillGreg]

Could you have used vinegar for soaking that cylinder?

[@BrickHouseBuilds]

That would flash rust. I don't like acids. The evaporust obviously worked very well

[@karlvanboxel561]

Did u drain the crank case? Gd job dude

[@BrickHouseBuilds]

No, its fine

[@Flexnes1]

This is quickly becoming my favourite KZbin channel! And turning it into a vintage racer lookalike is exactly the route I would have taken if I had that bike. And your skill set. And your shop. And time. 😂 Well done, looking forward to the next one! Greetings from Sweden.

[@BrickHouseBuilds]

Well I very much appreciate that! Glad you have been enjoying!

[@G58]

I concur from UK. Too many channels concentrate on the ‘will it run after xx years’ nonsense. Then some them even ride the bikes home - despite turning up with a buddy and a truck!! But some them have jeeeezus on their side apparently 🙄🧐😎😜👀🙈 Peace

[@426baron]

​@@G58 some channels do so much "will it run after x years" only to have the things brought to lie in another field behind the workshop for what is another few years already...

[@G58]

@@426baron Indeed. Silly isn’t it?

[@426baron]

@@G58 maybe not that silly... In a few years time, they'll be able to make a whole new series of "will it start ?"(again) with their own junk. More content with minimal effort, and some are already at this stage.

[@donzimmer63]

Not sure what anyone would say you did wrong. You went at it carefully and methodically. Enjoyed it and looking forward to seeing more.

[@BrickHouseBuilds]

Oh people g out of their way to point out anything lol

[@dancarey3303]

The Benelli 750 design was based on the Honda 500 Four. So I guess it’s a bit less surprising that it would have JIS screws. You might find other similarities to Honda products (ie: tappet covers!). Looking forward to seeing what you do with this.

[@BrickHouseBuilds]

Correct

[@neilgillam9919]

Your spot on dan. Cb650 four is the basis of the engine. Stock honda 550 pistons and rings are a direct fit. I rebuilt on of these years ago. Wish I still had if now.

[@G58]

To be fair, there was no real need for Benelli to use JIS screws, because there must be plenty of European companies producing the more compatible alternatives. And it’s likely that the JIS screws cost more than them. Plus the choice of screw heads after all have no bearing on the overall engine or bike design. However, JIS heads ARE superior to many of the alternatives, except perhaps Allen/Hex Sockets. And we know that Benelli was in full Picasso mode with this one: Stealing from the best!! I remember when I saw my first 750 Sei at the opening day of a new boutique style dealership in the UK Midlands. They were allowing people to test ride most of the Benelli range - except the Sei. As the screaming two stroke triples went off in a cloud of smoke, the 750 just sat there majestically basking in the admiring gazes of every one of us who knew we couldn’t afford it. I’m guessing that was 1977, but the memory is getting foggy. The place was called Davick Motique! Two guys called Dave and Erick with more money than business sense. The enterprise sadly didn’t last long. I did buy my Belstaff wax cotton jacket from them, but it was always a bit odd due to being on display in bright sunlight through the plate glass showroom windows. It’s odd how we store our recollections isn’t it?

[@neilgillam9919]

Typo on cb650. Should be cb550f

[@BrickHouseBuilds]

@@neilgillam9919 well 500f but we knew what you meant. All good

[@gerardbodenheimer7522]

Liked the way your going.. I absolutely hate these hundreds of "will it run" videos on YT where guys are brutally tearing out cars or bikes out of woods, hooking on a battery on these poor engines and without any precaution just let them turn and run and break everything. A little love and intelligence is all its needs! Thank you, love to see this rare bike hit the road again - and in the way YOU like it! Best regards from Switzerland.

[@BrickHouseBuilds]

I appreciate it! Sometimes I'd be open to giving it a go to see if it lives but this definitely requires extra attention

[@426baron]

For some of those older channels, you can see the cars left to rot again in the background years after.

[@DIYwithUncleCy]

I have been looking forward to both this and the CBX. So I don't think you can go wrong working on either one. I really want to hear one of them run now. Great stuff BJ.

[@BrickHouseBuilds]

Same here. Not sure which will run first but id bet on the cbx

[@vinnypandolfo6195]

You sir have the patience of a Saint! More power to ya, I hope that you enjoy riding that vintage bike. I'm sure you'll have it up and running in no time.

[@airmotivewelding8012]

Spot on man, no negativity at all. Exciting to see her brake free!!

[@BrickHouseBuilds]

Thank ya!

[@underwaterwatchesunderwater]

Liked it? Hell yeah. I loved it! I have no idea what you're doing or why you're doing it, but it's still fascinating. I hope to get into wrenching at some point in my life and I'm sure I'm learning something. Thanks for taking the time to make these vids for us. Much appreciated =)

[@BrickHouseBuilds]

Glad you enjoyed!

[@prunesquallor3444]

I’ve been waiting for this day ever since you discovered the beast lying on its side. You went about freeing the motor very carefully and methodically. Patience and experience are definitely two virtues needed when tackling this type of job. I’m happy to see this project will continue to completion. Ciao and namaste.

[@BrickHouseBuilds]

Thank ya much! Glad you're excited for it!

[@MP-br4pj]

As you said, not really agree with making this beast into that racer style, but thats just a difference in opinion and taste. Still hyped to see the build, and the care you always put into these bikes. Who cares about what it really looks like in the end, if the owner is happy with it. Atleast you're trynna do the bike justice, and give it new life. Keep up the awesome work man

[@BrickHouseBuilds]

🤘🤘

[@jishh]

Love the idea with this. and it's really interesting to see how you worked on this engine! also... 10k views in 18 hours! respectttt

[@BrickHouseBuilds]

Thank ya dude! The video has already ben smashing it. Definitely didn't expect this many views so early

[@passinthru4328]

Watching that engine loosen up was exciting! Great job taking us through the process in such a detailed and explanatory way. The tops of those cylinders looked pretty lumpy. Feeling optimistic about this bike and what you'll be doing with it.

[@BrickHouseBuilds]

Yea lots of carbon on the pistons and surely the head. Still undecided on how far ill take it down but I would like to see less junk in the cylinders

[@nononsenseBennett]

I think the rusty spots would be beyond the rings?

[@rchelihead2157]

Coming to you all the way from India. Grown up with classic bikes in the family Indian Scout 750, Triumph twins, Sunbeam etc. Saw them being worked on as a growing up kid too. I currently ride an Enfield Interceptor and a Benelli TRK 502x. Love you passion with these timeless beauties and find it extremely satisfying to watch your videos !! Keep up the awesome work 👍

[@BrickHouseBuilds]

Welcome and glad you enjoy the videos!

[@asgaardnext3653]

I just love the way he politely checks and corrects all the idiot gallery who offer up their two cents worth of dribble , far more polite than I would be , congratulates on your abilities and content ignore all the naysayers

[@7443jan]

I had one in 1979. Bought it new. Problems with not running on all cylinders were solved after placing an electronic system. It is a very nice bike. Super sound from intake and six exhausts.

[@BrickHouseBuilds]

An upgraded ignition would definitely be on the to-do list

[@7443jan]

@@BrickHouseBuilds Hopefully you can get all the parts. good luck.

[@mcasteel2112]

Note: when purchasing Acetone, try and locate someone with a Sallys account so you can get 100% the Box store stuff is not 100% I once followed a formula from Bob is the Oil guy forum on adding Acetone to my fuel. 2.5 oz to every 10 gallons. I used my Grand National which was pushing around 525 to the wheels (although a boosted application is always dial up) I averaged about 27 mpg on the freeway during a 1200 mile road trip. Blew my mind.

[@keithcrampton1438]

I don't know who this guy is but he is making two people very happy here.my wife thinks he is gorgeous and I think he gets the best bikes in the WORLD!

[@danielmoore2475]

No nonsense channels like this are the best 👍Just a guy that loves bikes, making content for people that love bikes too. This looks like it'll be a great project to follow.

[@BrickHouseBuilds]

Thank ya Dan!

[@keithcrampton1438]

I love the way he uses the blowtorch because heat solves so many tight mechanical issues!

[@davidmacgregor5193]

Thank you for posting your video, I'm currently working on my 1980 Benelli 900 Sei Mark 2 project, I've installed a bank of six Dell 'Orto 22mm carbs to replace the stock three 24mm units. I also have a modified 750 Sei Silentium six-into-six exhaust system, the 900 has a more vertical cylinder block than the 750, so to avoid the silencers hanging too low the header pipes had to be cut and rewelded at a different angle so that the silencers sit higher up. I also have Tomaselli clip-on bars, a Tomaselli quick action throttle and Paulo Tarozzi rear set foot controls. I have installed an oil cooler from a 1982 Honda CB650SC, Benelli sixes run very hot so an oil cooler is a sensible addition. I'm in no rush to complete the project, I just work on it when I feel the urge, the Benelli last ran in 2010. Benelli only built 1878 of the 900 Sei in a production run from 1979 until 1989, so they weren't mass produced, nothing else sounds like a Benelli Sei.

[@BrickHouseBuilds]

That sounds like an awesome project! I do plan to add an oil cooler so thats good info! Excited to get it going

[@davidmacgregor5193]

@@BrickHouseBuilds Thanks for your reply, the CB650SC cooler, hoses and take off casting all fit directly onto the Benelli sixes. I mounted the cooler where the stock horns were, I relocated the horns either side on the rear engine mounting plates which on my machine are now stainless steel as are the front engine mounting plates. I'm looking forward to your future 750 Sei videos.

[@shawnmrfixitlee6478]

I use JB Weld extreme temp formula and it is strong .. Fixed many bikes and generators with it !

[@billquillin1952]

I've come to rely on Marvel Mystery Oil for aluminum corrosion. And it smells good!!

[@dukie1616]

A bunch of my favorite videos dropped today but this one is the gem, and the project I’m most looking forward to. And the direction you want to go with it is bellissimo👏 Of course I’d love to see a full teardown, but whatever you do with it will be great.

[@BrickHouseBuilds]

Thank ya! It will oooze cool Italian race bike vibes

[@francescomacchiarella6679]

I rebuilt my dads 79 benelli 900 Sei a few years back. Just a heads up. When you spun the wheel I noticed the bolt treaded in the crank on the ignition timing side was wobbling. Probably just cross treaded. Hopefully it’s not the crank since the bike did fall over on that side. Awesome work and can’t wait to see the finished result.

[@BrickHouseBuilds]

Could be the bolt but eventually ill put a dial on it to confirm

[@cojomo123]

Looking forward to what the end result of this,and other projects you have on the go,along with any future restores,just subscribed,👍,🍻from🏴󠁧󠁢󠁳󠁣󠁴󠁿,Cj.

[@aaaa1953]

@@BrickHouseBuilds Could be the small bolt is twisted, the mechanical timing advance is under there usually. A good thing to check in case it's seized up.

[@ryan3551]

Awesome job! Would love to see if this engine could just chug to life, even if its only for a short while on the workstand. I've been looking forward to more content from the benelli and the CBX, keep up the amazing work BJ!🏍

[@BrickHouseBuilds]

Thank ya!

[@littlebittybert]

Let the naysayers say nay, man. If they don't like what you're doing, they need to get back to scrolling. I'm an old fart who's been tinkering with old rusty crap all my life, and it's fun watching a youngster like you tackle a project like this. All your projects, for that matter. Keep up the good work, and keep having fun! There's NOTHING like the look on your face when it finally turned over. That's what makes it all worthwhile!

[@BrickHouseBuilds]

I appreciate it 🤘🤘

[@upsidedowndog1256]

I think she will run. A good preoiler can be made from an old soda fountain canister. I recently picked one up. You just need to change the fittings which are normal pipe thread. I look forward to hearing this AND the CBX. Onward and upward!

[@BrickHouseBuilds]

🤘🤘

[@upsidedowndog1256]

@@BrickHouseBuilds I just got my soda canister working. The fittings are NOT pipe threads but if you knock the valves out you can tap the fittings to 1/4"-18 npt. Mine is working well. Drill them out with a 7/16ths drill bit. I cut off the portion with the o-rings. It gets thin there. Holding 129 psi.

[@kimeldiin1930]

The Benelli frame is columbus chrome moly pipes , INFINITELY BETTER than the second hand aircraft carriers in abominable japonese frames!! An entirely different kettle of fish.......

[@BrickHouseBuilds]

Very interesting

[@motorfreaknew]

During the De Tomaso era, Moto Guzzi and Benelli proposed the Italian answer to the Japanese multi-cylinder bikes with the Guzzi four and the Benelli six. Unfortunately, the quality of the materials and workmanship of these engines were much inferior and therefore they were a flop, which is why they sold very little and few of them survive today, therefore they are very rare. As you said, the bike is yours and you can do whatever you want with it, the important thing is to bring a piece of Italian motoring history back to life, even with a custom project.

[@BrickHouseBuilds]

Agreed. Pushing limits, experimenting, and thinking outside the box drives innovation. Not all can be successful but they must sometimes fail to then succeed

[@SillyVehicleEnjoyer_]

Didn't realize how beautiful the stock bike is, with everything on it, pretty crazy how many cylinders they put on a bike sometimes. Lol

[@petebird7171]

You keep going as you are mate, all your projects seem to go very well to me, great video, really enjoyed it.👍👍👍👍👍👍👍👍

[@BrickHouseBuilds]

Many thanks Pete!

[@stevehead365]

A masterly unseizing (sic). There seems to be a lot of crap stuck to the piston crowns, would that likely burn off when running? Sorry for the lame joke.

[@BrickHouseBuilds]

I think with good fuel it could burn off but can't see it getting 100% clean

[@warmblood58]

Very much admire your methodology - slow and steady works!

[@BrickHouseBuilds]

Thanks James!

[@RobinHammock-y1j]

It work great in bed!!

[@keithcrampton1438]

I have had about a dozen bikes in my life and the mako 360 dirt bike was totally insane!

[@RobinHammock-y1j]

I had a maiko 360 widow maker. FUCKIN INSANE BEAST!!! With the PING PING PA PA. PING idle sound loved that sound!!!!

[@paulfellows2094]

great job so far mate i love the benelli it will make one awesome bike this is my first time watching your videos you have me hooked

[@BrickHouseBuilds]

Glad you enjoyed Paul!

[@tiffinthyme5822]

Hello BJ it’s great to see you at work again. I think the direction you are planning for the Benelli is going to be perfect. Look forward to the CBX too. Cheers Kevin

[@BrickHouseBuilds]

Thanks Kev!

[@panospyrgiotis2992]

Great video mate. Very meticulous work on your part. Don't waste your time responding to the self-declared "experts". Don't even bother acknowledging them in the videos. My old man always said about these guys... "The wise man speaks because he has something to say. The fool speaks because he has to say something"

[@BrickHouseBuilds]

Very well said! It's a bit satisfying to be able to point out when they are clearly wrong after so many like to nitpick anything I do. The screwdriver example was like a smack upside the head lol

[@WagsAutomotive]

Some helpful advice for you man. If you have a stuck spark plug (or bolt) turn it a little, spray lube on it, then turn it the opposite way until it's tight. Turn it back again and try to go a little farther. Then spray lube on it and turn it back again until it's tight. Keep working it back and forth like that, trying to move it a little further each time. That will reduce the chances of damaging the threads, especially in aluminum heads or engine parts. Good luck with the build. Should be a cool bike when your done!

[@BrickHouseBuilds]

Thats what I do

[@WagsAutomotive]

Oh OK! Wasn't sure if you did or not.

[@alexbrown1995]

That saved me from offering that advice :-) It works really well,,,,,

[@scottmclennan6114]

I wouldn’t worry too much about what people say you should do mate. You’ve used some sound logic to come up with your direction for this bike and that’s all that matters. It will look terrific.

[@BrickHouseBuilds]

Thanks Scott. Just like to get ahead of the endless comments telling me how to do things so statements like I make in video do help stop them before they start

[@grahamhider3754]

Looking forward to seeing it run. Be following this all the way. All the best from England ❤

[@BrickHouseBuilds]

Thanks Graham!

[@pebrede]

From the bore scope videos, to me, it appears like the cylinders have been honed but not run before it was layed? up. The hone marks appear to be “over” the bore wear indications. I would also suggest that you remove all the valve caps and using a suitable lever see if there are any valves stuck, it sounds like there is one stuck down and hitting a piston when you were spinning over with the rear wheel. Just some observations, your doing a great job and a good thing bringing one of these back to life. Looking forward to the next episode.

[@BrickHouseBuilds]

Its unknown if it had a rebuild at some point but yes the crosshatching looks good. It could be a low mile bike for all I know too. Valves aren't hitting as you wouldn't be able to rotate the engine. I was fighting stiction as it was freeing up. Its good now

[@pebrede]

@@BrickHouseBuilds it’s a little hard watching the video rather than being there in person. In the late 80’s I had an apprentice who was doing a first service on a gs Suzuki 2 valve twin and managed to somehow after removing the rocker cover take the tensioner off and turned the rear wheel backwards to bring the piston to tdc, in the process skipped the cam chain over several teeth and bent the valves and cracked the guides and he did not notice until he started it up and really bent and broke things. Worst bit I was right next to him working on a gsxr1100 and did not notice or twig to his mistakes, and question when he said he needed to use extra thick shims for the valves, till it was to late. Glad it is all going to well and it should actually be an excellent example of the Sei when up and running. Take care.

[@richardmedeiros8472]

I work on guitars and yes people get on me all the time....more then one way to do sruff.

[@BrickHouseBuilds]

Definitely easy for people to be keyboard warriors

[@paulbuckberry7683]

I think your thoughts for this project are spot on. I can see that as a 70’s retro shed racer! After all, if it wasn’t for you it would still be on its side rotting in a barn. Why Acetone and ATF, I’m intrigued?

[@BrickHouseBuilds]

Yeah it will live on in a new form rather than die a slow death. The mix is just a very popular one recommend by many people.

[@kdsowen2882]

You might want to keep this one . They seem to be gaining-value by the week . Dave

[@BrickHouseBuilds]

Definitely going to be a project I enjoy but its not based on whatever value they may have. Just based on cool factors of the engine and idea of the bike

[@G58]

43:55 IS that reflection? Or is it rust deposit laying down in the bottom of the puddles? I think so. Looks like the compression ring scrubbed off the corrosion and turned it to dust, leaving it at the lowest points as you might expect from iron rust. Unless you find deep pitting in those bores, you might just get away with not requiring rebores and new pistons and rings from your favourite Honda NOS supplier. Very interesting. Really respect the way you’re going about this job. Good luck with the next stage.

[@BrickHouseBuilds]

I definitely want to try to get it going as-is and have fun with it. Like my cb750 the compression may just be fine with a bit of extra wear on the cylinders. If it needs a rebuild I can always do that but why not try it without first and see what happens

[@G58]

@@BrickHouseBuilds Absolutely. Totally agree. Really looking forward to following your progress.

[@chema1546]

hello good morning I had a Benelli the problem is the gear change was of poor quality I hope you can get it back best regards 😃

[@BrickHouseBuilds]

Did you have this model?

[@johngouker3887]

you should try WD40 rust & soak !

[@seanfritz5068]

The direction you chose for this bike is perfect given it's condition. I'm glad your saving it.

[@BrickHouseBuilds]

I think so too. If it were more complete and original I'd sell it to a collector

[@G58]

Indeed. If it was stock, it would be a crime, a sin even, especially given the rarity of them. I actively dislike most of the modern interpretations of the cafe racer: Mercilessly butchered rear ends; LED strips sewn into BROWN leather seat covers; BIG FAT knobbly front tyres (??WTF??), guaranteeing they will never race anything other than the coffee shop poser’s ego; and the ludicrous Bermuda Triangle of lost opportunities behind the carbs - where imagination goes to cry!!! I swear if I ever meet the lunatic that started such a ridiculous trend (copied by EVERYONE devoid of an original idea or imagination), I may need a Valium to avoid doing serious harm. But this bike has already had a life on the track, so that’s part of its story already. So the same rules obviously don’t apply. My book won’t be available on Amazon. 🧐😎😜👀 Peace

[@mariorossi8800]

si ok ,,, è una vera Benelli anche se il motore a 6 cilindri serviva più che altro a fare una ^^ sceneggiata Napoletana yes ok ,,, it's a real Benelli even if the 6-cylinder engine served more than anything to make a ^^ Neapolitan drama circus

[@jaimerobson4738]

I used the ATF/acetone 50/50 to loosen murderously rusted barrels from an H1. It took several applications and as long as I didn’t apply flame direct to the solution there were no fires. Of course there wasn’t a real “volume” of the solution at anytime either. If I applied moderate heat to the barrel bolt sleeves and added solution it would sputter and very impressively roil rust up from the bottom, and only bringing flame if open flame was evident! Again there wasn’t a volume of solution to concern me.

[@MM_in_Havasu]

Great content! If you get an engine unstuck, it will likely run(as evidenced by your recent CB750 revival). Am glad to know that you have future plans for this long-term project, and also looking forward to you getting your CBX put back together and lit off! You got this, man, because you have a lot of knowledge already dealing with these old bikes and all the builds you have done so far. Thanks for another cool video, and keep up the great work!!

[@BrickHouseBuilds]

Thanks so much Mark! I'm feeling confident for this one to live again

[@jaimo6893]

Absolutely love the direction. Exactly what I’d do with it ❤

[@BrickHouseBuilds]

It's gonna be so fun!

[@gravydavy4188]

A bike shop local to me in Norfolk England had a 900 Benelli from new in its showroom until the early 90's, I used to look at it and think it was boring, now I wish I'd bought it. I love the way you are doing this bike.

[@PeterLee-zn3jl]

First 75-140 axle oil ( small amt) then rustsolve , do twice rustsolve rinsecwith acetone/atf...drain crankcase...ADD FRESH OIL...THEN DO FIRST ATTEMPT TO TURN CRSNK...IT HELPS TO HOLD RUSTSOLVE IN CHAMBER...

[@marklennon4664]

Love your videos and the quality work that you do. All the best fella 👍

[@BrickHouseBuilds]

Much appreciated Mark!

[@willjohnson5861]

This is such a cool and unique bike. Thank you so much for picking it up and showing us your progress on it. Now I have my fingers crossed one appears on the Minneapolis/st.Paul Craigslist!

[@BrickHouseBuilds]

Well of course! Just happy people are interested in it

[@Einherjar_17]

Excellent video, I look forward to seeing the whole series of how you leave this beauty in perfect condition, greetings from southern Argentina.

[@BrickHouseBuilds]

Thank you

[@andrewgrace4410]

Great work, almost as exciting starting it for the first time.

[@BrickHouseBuilds]

Thanks Andrew!

[@jeffsayle7529]

Really enjoying your videos so thanks for putting them out for us all. Just an observation but I saw one of these bikes last year and the thing that stood out for me was listening to the tickover. The bike had 6 into 6 pipes and standing behind it listening the the pop of each cylinder from the individual tailpipes was fabulous. Thanks again for the videos I've seen so far as I have a lot of catching up to do.

[@kevinlewis9151]

I have a 4 cylinder Honda 750 that was in neutral, and now for some reason it's shifted into gear and having issues shifting back to neutral

[@honda4185]

Mabye the tank and bits is in some old paint/body shop around there it was. Try and find it? Can't wait to hear that 6cyl fire up.. old 6cyl bikes sound is the best sound... like the Honda Cbx1000 6cyl 😍 Looking forward to the next video.

[@erikeggenbakstad]

Nice! I used a similar product as JB Weld on a 6x6 Polaris. A Wurth product. It was for a company that had this old ATV as a backup machine, and they didn’t want to spend $1800 plus labour in a new gear case. I've never heard from them again, so I presume it worked out just fine. I'm looking forward to the next one. Thanks for the upload! 😊👍

[@BrickHouseBuilds]

Done right with good prep I feel it would hold just fine.

[@petermoto409]

The three lens borescope would be a good investment for what you are doing.

[@highlanderoutsider5259]

Really cool that you’re revisiting this one,sooo rare 👍🏻🏴󠁧󠁢󠁳󠁣󠁴󠁿👍🏻

[@BrickHouseBuilds]

Definitely exciting to put some time into it

[@madcat4563]

The JIS comment in the previous video puzzled me, but I assumed the Italians used Japanese parts. Or they just have better grip for the job.

[@john-r-edge]

ATF is Automatic Transmission Fluid. Acetone is a powerful solvent whose most common everyday use is as nail varnish remover. Acetone dissolved many common plastics, so nasty stuff.

[@thomaspenman4101]

I never got lucky finding things like that in barns and i was surrrounded by old farms in cheshire england mind you i was afraid to knock on the door and ask incase a mad farmer chased me with a shotgun😢

[@meserole65]

+1 on harmless evapo-rust down the cylinder!

[@davidyates5377]

Never seen an engine unseized before , very interesting to watch , really looking forward to next benelli or cbx video , both very cool bikes , keep up the great content , don't worry about a little negative content as you can't please all your subscribers all the time but we will all keep watching , once again very interesting video

[@BrickHouseBuilds]

Definitely can't please them all. They will always let you know when they are unhappy lol

[@grahamhill6616]

Astounding amount of negligence on such an iconic Italian machine. OK the Benelli is not in the SS, Mk1 or SFC league, but still, it breaks my heart. At least she's found a good resurrectionist. Good luck with her. I remember having a 900 Sei for a weekend in 1990.I loved looking at her, loved her sound, but OMG did she have a nasty hinge in the middle. Had to ride her like a shaftie, always on the throttle through corners.

[@BrickHouseBuilds]

It was definitely sad to find it like that

[@matthewshaw1694]

Good video who cares what people say

[@BrickHouseBuilds]

I appreciate it. Just trying to get ahead of the "you shoulda...." comments before they flow in lol

[@williamjamesmorrison9032]

Dude. Love your content, recently "ish" found your channel. Enjoy the longer videos like this where your problem solving and getting it done. I tinker about with bikes but nothing like what you do. I Find it relaxing watching your videos after a long day at work.👌💪

[@BrickHouseBuilds]

Thank ya for the input. I purposely kept this one long to see how it went. Boring to edit but if people find it relaxing id like to keep giving the same feeling

[@johnbutler5650]

I heard you talking about plugging the holes with rags, I have a helpful tip that might come in handy( especially since it’s too late for you to use it ). You can buy a bucket of foam practice golf balls at Walmart ( well, that’s where I bought mine. I’m sure any sporting goods store would have them ). They are highly water resistant, they are pretty collapsible ( ie: you can jam them into a spot, and they will stay put! ). They are tough enough to withstand soda/walnut hull blasting medium and light carborundum usage, but they will cut in two with it- they’re freakin’ foam after all! You can trim them down for odd shaped holes, and they are cheap as chips, so you don’t have to be precious about them like a silicone plug , and they will bear up better than a rag. Also, they will last a long time, so you can stuff them into an intake track or exhaust port for long term storage. Dirt daubers can’t get past them ( you may not have a problem with mud dauber wasps in Missouri, but in Mississippi, the damn things will ruin your day! ). Hope you get something out of this!

[@BrickHouseBuilds]

Good idea!

[@margarita8442]

looks like a write off -- would give up it

[@BrickHouseBuilds]

Not my style. Well worth doing

[@johncollier7744]

Been binge watching your videos over the weekend. In my working life, I used to repair fire trucks, and the foam compound they used was very corrosive resulting in gate valves and pump lobes seizing up. We found that brake fluid has great penetrating qualities. We would allow it to soak overnight and the following morning see where it had seeped through, which was the previous day an immovable component. Maybe try it next time you have a seized component. Videos are great. Keep up the good work.

[@BrickHouseBuilds]

Glad you have enjoyed!

[@ivanpereiradearaujo4449]

Show ok!!!

[@davetaylor4741]

Amazing engines. Looks like it will survive. Not many specials with an engine like that. Great start for a project.

[@BrickHouseBuilds]

Im still feeling confident with it. There is hope

[@ManCaveMayhem]

Love your videos, my friend👍🏻👍🏻👍🏻🇺🇸 don’t worry about the negative comments. You’ll always get those. You’re doing a great job. Keep up the good work I love watching this motorcycle porn.🤣 keep the rubber side down!

[@BrickHouseBuilds]

🤘🤘

[@kevinlewis9151]

Id be tempted to go to a 6pack carburetor set up to see if you can squeeze 150 hp out of this bike

[@bluehazeboy]

That evaporust works really well in a warm environment,I used it on my fuel tank & it came up like new

[@BrickHouseBuilds]

That it does!

[@bluehazeboy]

@@BrickHouseBuilds another way at using evaporust, the longer you leave it the more it works,

[@kevincosta9228]

Ah, the project I've been waiting for. It's amazing that Benelli beat Honda to the market with a six. They also sound fantastic.

[@BrickHouseBuilds]

At least beat them to the consumer market. Honda still had the rc166 race bike

[@kevincosta9228]

@@BrickHouseBuilds Talk about a fantastic sounding bike. Crazy little jewel.

[@kevinlewis9151]

You scrapped the junk wiring? Where are you getting replacement wiring that works with CDI boxes, or where are you getting replacement CDI box upgrades?

[@BrickHouseBuilds]

@kevinlewis9151 Yes the wiring was trash. This isn't a CDI bike, it is a points system. Wires are wire regardless of CDI or not. You can source plugs and pins for any connection.

[@drhkleinert8241]

My question: Whats the sense to get a 750 sei in that condition? I like the bike, yes, but in this case nearly 70 % of the parts are lost. OK, for the pure enging you need a very good mechanic, but where do you buy all the missing parts? Seat, Tank, exhausts etc...? I dont think that there is a good market for old 750 sei parts. From all the costs and time i dont want to talk.

[@BrickHouseBuilds]

It's a piece of history and I want to save it. It's even better for me because I don't care about keeping it original as I want to make it custom and don't need or want those factory parts

[@MegaBruceC]

I finally got around to watching this episode and would LOVE to see the Benelli brought to life and perhaps on a track!

[@BrickHouseBuilds]

It will happen eventually. Trying to get through projects

[@johndonlon1611]

Glad to hear the backstory on this bike. When I first saw it in the previous video all I could think was "how could anyone do that?" That machine was priced so far beyond my means back in 1975. I really hope your persistence and patience pays dividends. Good luck!

[@BrickHouseBuilds]

Yeah I couldn't give much detail on the full story but it all adds up.

[@kampatterson1865]

Thanks so much for posting. I learned a lot and appreciate your methodical approach. I’m trying to unseize my fz 600 engine. I filled the cylinders with Evaporust 3 weeks ago, drained then added MM oil. No luck so back to Evaporust. I’m going slow, taking my time. Question, is it possible to damage the transmission by putting it in 6th gear and rocking the wheel back and forth? It’s not moving at all. I try every day for a few minutes. Any other suggestions? I’d like to free it up before I attempt a top end repair. Yes I have the service manual 😀. Thanks a lot.

[@BrickHouseBuilds]

Glad you find it helpful. Just don't get violent trying to move the back wheel and you will be safe. Be sure your plugs are out when trying to rotate

[@idratherberiding3456]

Excellent to see this bike turning into a project, You probably know, sei means six in Italian. And too bad that Benelli, Laverda, Moto Morini are all dead. Although Chinese manufacturers have bought the Moto Morini and Benelli brands, it is not the same thing. Even when they claim the bikes they are making under these brands are designed in Italy.

[@BrickHouseBuilds]

Times do change

[@alexbrown1995]

mate of mine bought a new Morini 500 at least 35 years ago. He still has it! I still remember him bringing it around to show it off and we noticied that the rear brake had very little brake fluid in it and wasn'r working. A brand new bike! And I bought the first Ducati 750 GT in Australia in February 1972. The left hand switch block caught fire as I turned into the dealers yard for its first service....

[@katywalker8322]

Whether a fan of original condition bikes or not, I would suspect that this one has been previously modified and used too much for this to be viable. I have confidence in your ability to repair the chunks missing from the engine. I would say that personally I think it would look great with a 6>6 exhaust setup (especially if curved like the one in your example photo to show the fairing). However I wouldn't want to do the work or pay the bill for that, and it is your bike

[@BrickHouseBuilds]

Agreed. I do also like the look of the pipes in teh example photo but knowing what the 6/1 sounds like I just have to have it.

[@katywalker8322]

@@BrickHouseBuilds , maybe to something with the end of the exhaust to make a feature of 6 of something?

[@ТусовкисМедведьевичем]

Very nice, very cool ❤😎👍

[@BrickHouseBuilds]

Thank ya!

[@menom7]

Lol. Well.....I see You went back to Bikes for now (which I applaud You on!) and the second I read "Benelli 750SEI " I immediately had to click onto it!!! Gread video Man!!! Enjoyed watching this one!!! : >)

[@BrickHouseBuilds]

Well there was no shift to cars. Just an occasional like 1 out of 10 videos may be on one

[@claudiusgensin]

This is example how to not perform this work as well as every profy mechanic says. Disassembly engine from frame put on stand and commence to work...Remove head, acid bath the cylinders, burn rust and use wood and mallet to slightly de-seize them. Next step is pistons rings as must be clean and inspect. What about main bearings shell if they are seized and sticky with crankshaft? Rotating the crank will just rotate them in place and case is closed.... But you are pretty young and have quite enough time ahead of yourself to upgrade the skills....as well as all of us begun like you... so go ahead boy and enjoy back in life these old stuffs

[@BrickHouseBuilds]

While you are right in that there is of course the ideal way of doing it I feel you miss a few key points. The first major one being that every situation is different and not all situations require perfection. Perfection can often halt progress with case in point being my CBX restoration Ichave underway. Progress is nil as I am chasing perfection with plating my own hardware and sourcing various parts. The second point is practicality in each job. Those same professional mechanics you speak of have all used this method as well when it's the right move for the job. If a customer comes in with a vintage car that has a lightly seized engine who simply wants it to run but isn't wanting a perfectly restored car doesn't need a full rebuild. If it can be safely unseized and brought back to life to suit its owners needs then that is a job well done. Case in point here is my blue cb750 barn find. It was seized on cylinder 1 from sitting 40+ years without plugs. I worked it lose, got it running, and watched compression increase with every check over then next few hundred miles. It has 165psi on all 4 cylinders, doesn't smoke, doesn't use oil, and is my daily rider. No need for a full rebuild. Again I agree that there is a top level way of doing things which professional mechanics do, but I also argue that being able to make these decisions and determine the correct method for the specific job is also the sign of a professional mechanic. Also, I'm not a boy. I'm 36 and do this professionally.

[@ktm42080]

That Benelli is really cool! I've always had interest in the oddball projects. When I went to school everyone had a Camaro/Chevelle/Nova, and that's ok, but it came down to this ones blue, that one's yellow..... boring. I rode a 73 Honda 350 chopper, 12" longer full fork tubes, homemade hardtail and scary as heck at speed.

[@BrickHouseBuilds]

I agree. I am super excited to take this to a vintage bike night when done. Will only ever be the only one like it!

[@margarita8442]

rings will be snapped now

[@BrickHouseBuilds]

Nope

[@eanbarr35]

seized engines can be freed up some times by heating oil to boiling point and pouring it very carefully into the cylinders try using a metal funnel for safety reasons allowed the oil to sit a few hours you can try almost immediately or take your time and let it sit overnight if it's stubborn, I've never known this not to work, but this method it a very last resort, guys this it very risky so be careful and it goes without saying, your on your own so take care, please.

[@BrickHouseBuilds]

This worked though