CB750 Chopper Revival - Rebuilding The Oil Pump

Rebuilding the oil pump on my CB750 Chopper. This is a common process that I do each time I revive a CB750 as this is a very simple and inexpensive process to help give peace of mind. This bike has sat for at least 20 years but seems to have been very well maintained as I continue to find everything to be in very good condition.
Here is a parts breakdown on my particular bike being a 1976:
www.partzilla.com/catalog/hon...
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#brickhousebuilds #cb750 #motorcyclerevival

[@TessaTickle]

I love your referencing of Allen Millyard.

[@BrickHouseBuilds]

Hes' the goat. Always an inspiration

[@edwardmulder3777]

Wus guna mention something similar, Allan. Is deffo 1 of a kind,he's done some amazing work

[@danielkeel9265]

Full Millyard props! If I could get 50 years experience in, and my own basically (to an engineer) workspace like Allen's sheds, I'd probably be as artistic in the way I work as he is! You're doing very well and I enjoy your tutorials most of all. Very real.

[@TessaTickle]

@@danielkeel9265 I don't want to be an ass but Millyard's entire setup fits into a small garage and a small shed in his garden.

[@danielkeel9265]

@@TessaTickle yes, that's exactly my point! He has everything he needs in those two tiny spaces! That's efficiency indeed!

[@AndyH-13]

Had a chuckle when you said ‘I’ll never be as cool as Allen, but I have the little bottle’. Enjoyed the video.

[@BrickHouseBuilds]

I mean I'm just speaking the truth lol

[@daveb1242]

I’ve done the exact same thing with the oil bottle. I actually met Allan at a Vintage Honda meeting back in the summer. Really nice guy.

[@BrickHouseBuilds]

I'd love to meet him someday!

[@menom7]

If You ever do,make SURE he gives you one of Tracy's awesome cupcakes!!! lol. @@BrickHouseBuilds

[@robertalexander2506]

Anyone that loves & feeds Hedge Hogs can't be too bad! LOL.

[@andrewkay114]

I love this type of "how to" videos and yours are awesome. Filming everything so well must take so much time but it is greatly appreciated. 👏 👏

[@BrickHouseBuilds]

Much appreciated and glad you enjoyed!

[@peterdocter4659]

Spot on with the bolt mis and the Happy Gilmore!

[@BrickHouseBuilds]

🤣🤣

[@yoshuavillar]

No BS and straight to the point, love your stuff man

[@MM_in_Havasu]

Very cool tutorial! Done my fair share of Honda oil pumps myself, basically resealing & inspection just as you're doing here. CBX 2-stage oil pumps do benefit from shimming the hi pressure relief spring to give it about 75-90 psi instead of the stock 60 psi. Thanks man!

[@BrickHouseBuilds]

Good to know!

[@mfc4591]

I liked the vaseline trick, I have always primed with oil (filled the pump and turned it until it starts to pump), but that's messy and the oil runs out of course.... also vaseline will stop chapped seals !

[@BrickHouseBuilds]

Vaseline is a common trick for these and other pumps. Assembly lube can work also

[@trompelemonde4728]

BTW good edit, good pacing, good light, no youtube music that gets old.

[@Einherjar_17]

Hello BJ!, I'm catching up with your videos since the day I stopped watching them due to a health problem, I'm now in a position to continue enjoying your works of art. I always wonder where you learned so much about motorcycles from the 70s/90s and today, you have the habits of old school mechanics and you are very young, it is really a pleasure to see you work and your work causes me great admiration. Thank you very much and I send you a hug from the south of Argentina.

[@BrickHouseBuilds]

Well I'm glad you made it back! I really started developing my skills as I wanted to get a carbureted bike some years back to learn about them. Since then I've just continued to buy and repair them and learn something each time. My early works are nothing like today. I've just learned by doing

[@Einherjar_17]

@@BrickHouseBuilds Really impressive, thank you very much for your videos JB!

[@dangalli1]

That engine is running so well! Very clean in there considering...

[@BrickHouseBuilds]

Thats what I am feeling too. I think it will be very healthy upon startup

[@tat2dpom]

so coo; you watch milliards show hes a cool old legend

[@BrickHouseBuilds]

I never miss a video. Great to watch

[@gardeningfishingjimw9364]

Cleanest oil pump I have seen in a long time and not much grime on the outside either. Happy New year mate from Australia. :)

[@BrickHouseBuilds]

Yeah I was super happy about it

[@jonpeters5194]

I'm well pleased you are a fan of Allen Millyard... just perfect.

[@BrickHouseBuilds]

Well played 🙏

[@danielkeel9265]

Yes I was well pleased with that!

[@markconlon814]

great that you take the time to explain everything you are doing!

[@BrickHouseBuilds]

I aim to make this stuff clear so glad you enjoy that aspect

[@peterdocter4659]

Thank you for the "dot" system, i use it on the carbs and stuff too now, works great, when you have multiple day jobs.

[@BrickHouseBuilds]

I definitely need it to stay organized with multiple projects. Glad it's helpful!

[@plandovanje]

I really appreciate your job! Thank you!

[@BrickHouseBuilds]

Well thank you!

[@nigeltyrrell3952]

Always great videos

[@BrickHouseBuilds]

Thank ya!

[@user-fk8dn7gv3h]

You make it look easy! Keep it up.

[@BrickHouseBuilds]

🤘🤘

[@marcellvisball]

Great Video !

[@BrickHouseBuilds]

Glad you enjoyed!

[@motorfreaknew]

Good work!!🤩

[@BrickHouseBuilds]

Thank ya!

[@deanhallberg3340]

I'm sure vaseline works fine. FYI in the aviation world we use Crisco. Keep up the great videos. Working on my 74 CB750 stock chopper.

[@BrickHouseBuilds]

Haven't had a bad experience yet

[@boubou3949]

Wow I really enjoyed this video. I just bought my first bike - cb750 1979 - and want to keep it in good condition and try to do the reparation and tune up by myself, even though I’ve never touched a bike before. I’m learning by myself and with video like that and I think that kind of video are awesome. Just like the Chrisfix of bike!

[@BrickHouseBuilds]

HEY GUYS!! Thank ya though!

[@sargefreedom1578]

If I ever get another bike, I’ll be ahead of the game due to your videos

[@BrickHouseBuilds]

Thats the goal! 🤘🤘

[@trompelemonde4728]

I should have used vaseline or assembly lube to do my oil pump, it took an alarming amount of turning to get some oil pressure. I finally gave up and came back a few hours later and it pressurized immediately.

[@derekwarrington6803]

That old girl was very well maintained from what's been seen so far let's hope that's a trend through the whole build happy New year

[@BrickHouseBuilds]

Definitely seems that way throughout the bike

[@ryan3551]

Nice, relaxing episode. I remember pulling apart my c90 oil pump and was also surprised at how clean that was compared to the outside of the engine. I love the geometry of those little rotors in trochoidal oil pumps, they look so cool. Looking forward to more on this bike, almost as much as some more content on the CBX 😉. Happy new year

[@BrickHouseBuilds]

Definitely trying. Very busy with stuff right now

[@henryhawk978]

Good job B.J. enjoyed the video and RIDE SAFE OUT THERE!

[@BrickHouseBuilds]

Glad you enjoyed!

[@paulrooney8164]

You are a gift from the motorcycle Gods brother

[@BrickHouseBuilds]

lol lets not get carried away here. Hopefully the video is helpful though!

[@paulrooney8164]

@@BrickHouseBuilds that video alone is better than 99.9 percent of the material out there. Very thorough and well done with insights they don’t teach at school. Even if a clean rug was sacrificed in the making of it…

[@BrickHouseBuilds]

@paulrooney8164 well I appreciate it. We will definitely mourn the loss of my rug though

[@garyking9875]

Who's the good dog limping around the background with a cone on?

[@BrickHouseBuilds]

Thats Aspen. She was a couple days into recovery for a knee surgery

[@bobcarry4820]

Thanks for the information. It is valuable.

[@BrickHouseBuilds]

I appreciate it 🙏

[@pipersall6761]

"I know what i have, $10000 an oz." Lol. Man it would scare me to disassemble things as completely as you do. I guess that is what shop manuals are for but with those vintage bikes, which i am considering buying one an 81 750F, I would wonder if there are parts for them. When you showed that fairly pristine pickup filter screen I might have been tempted to stop there even though I can sure see the value of going the distance and really seeing the internal condition and cleaning it all and refurbishing the whole thing. Thats the way to do it so you really know what you have. One thing I would do is use plumbers grease instead of vaseline (which may be the arguments online you said we were having) due to its effects on o rings and rubber. But you said you have had good luck with it over time so I'll shut up. Great job. Thanks for showing everything the way you do.

[@BrickHouseBuilds]

Glad you enjoyed! Yeah everyone has an opinion on preferred methods lol

[@user-gn7cm6db2d]

Love the use of vasiline. Happy New Year to you and family😍

[@BrickHouseBuilds]

It's definitely helpful to help build pressure on initial startup

[@johndavis-tn3il]

Your videos provide very useful details and your presentation is among the best. I don't own a Honda, but techniques are seldom brand peculiar. I also like Pacific Mike's videos. I do own a Harley Davidson, just not one of the classics that he typically works on.

[@BrickHouseBuilds]

Thats exactly how I hope people approach these. They are all nuts and bolts so the info can be used on nearly any machine

[@JamesColeman1]

Nice work

[@BrickHouseBuilds]

🤘🤘

[@daveb1242]

Excellent video btw. Happy new year 👍👍

[@BrickHouseBuilds]

Happy new year to you!

[@shanedevlin6097]

When you do oil changes get some puppy pads and put them down before you start. There cheap and soak up the spill.

[@BrickHouseBuilds]

I use pig mat as shown. I just didn't anticipate that much oil being trapped in the lines. Id already taken away my pan and simply forgot to put the mat where it was needed

[@Nine_883]

It’s always fine to rust proof the rug!

[@BrickHouseBuilds]

No rusty rugs here!

[@kopasznyaku]

Blind and instant subscription to Allen Millyard :)

[@BrickHouseBuilds]

Oh man you are in for a treat lol

[@BrickHouseBuilds]

While you're at it subscribe to 46works

[@peteraitken6494]

Nice job /work BJ noticed your partners toothbrush in the parts washer 😉😂does a real good job if I say so myself had to laugh when I heard you running when the oil was pouring out haha and it still ended up on the floor ,great video buddy all the best 🔧🔧🔧👍👌❤️🏍️🏍️🏁🏁

[@BrickHouseBuilds]

"Why does my toothbrush taste like solvent?" 😬

[@peteraitken6494]

@@BrickHouseBuilds hahaha exactly lol 👍👍

[@bmicona]

It just blows me away that someone even came up with this to begin with

[@BrickHouseBuilds]

I think about that kind of thing all the time!

[@michaelweilmuenster5754]

I've been using the same lift as you have for the last 10 years. I keep a sheet of cardboard on the floor under it because I've had the same Exon Valdez oil spill a few times. The oil likes to flow out the cutout under the rear wheel.

[@BrickHouseBuilds]

I tried so hard to get an exxon Valdez reference in here lol. This was obviously a brain fart moment as I just didn't have my pan and pig mat under the bike. More oil came out than I expected and my carpet paid the price lol

[@Jabbekot]

You should revive the rubbers using Wintergreen oil and isopropyl alcohol. Works better than all other methods except buying new ones 😂 Regards from Denmark 🇩🇰

[@BrickHouseBuilds]

I'm planning to experiment with that eventually. I'd much rather just replace orings though

[@Jabbekot]

@@BrickHouseBuilds yeah when it comes to o-rings, you're right on. But intake boots.. Waaaaauuw what a difference!

[@rexdavis1487]

So BJ, being you mentioned your interest/fascination in the incomparable Allen Millyard’s unparalleled work. Have you ever contemplated the idea of acquiring a Flying Brick and turning it into your own flagship project. The Flying Brickhouse Build or something?!😎

[@BrickHouseBuilds]

Lol that name is everything! I've definitely contemplated a K100 but I just have so many builds waiting in line

[@zachsiebers5742]

I have the same oil squirter. Its awesom for engine assembly because I am too cheap to buy assembly oil

[@BrickHouseBuilds]

They are a must for sure

[@billclark6218]

Another good video. Might want to address priming pump. Pump cavitates and won't pressurize. There were talks of using Vaseline in gears. , laying bike over a bit to clear bubble. I put oil in the line with some positive pressure while slowly cranking. Light went out. Keep up the good content

[@BrickHouseBuilds]

I encourage people to read up on this and not just take my word for it. I showed using Vaseline in the pump.

[@peternielson4815]

I love your videos,but I had to laugh at about 8 min 20 the dog lifts his leg and does his thing on the gas cans.😂

[@BrickHouseBuilds]

She was limping as she got up as she was 2 days into recovery from a knee surgery. Couldn't put any weight on it yet

[@peterdocter4659]

The vasoline vs oil though, i'm not arguing one or the other or whatever, but unless you disassembled all motors and stuff you did this way, you don't really know if it's right or wrong. I do think vasoline has a low melting point, so at the very least it's good for a cold start and should then mix with the oil and seal the stuff up allright.

[@BrickHouseBuilds]

I would much rather have it to help draw in the oil and make quick pressure than to not use it at all. Mechanics have done this for eternity

[@Nine_883]

Nothing wrong with petroleum jelly. You’re not packing wheel bearings with it. It will dissolve once the oil warms up.

[@BrickHouseBuilds]

Exactly

[@jamesrichardson1901]

Pig Mat! You can never have too much.

[@BrickHouseBuilds]

True but also need to have it placed well 😅

[@iamrichrocker]

so let's install a wind up clock like Allen did on his Flying 5...that guy is incredible..stay in the game long enough mate and you will be too..

[@BrickHouseBuilds]

I just need to work on my hacksaw skills a bit 😅

[@Up-hill-Battle]

“Get in loser! We’re doing butt stuff” 😂😂😂

[@BrickHouseBuilds]

My new favorite shirt lol

[@XJRabbits]

Did you wear that shirt on purpose? (I’ll be digging into the Vaseline on camera, so wear the butt stuff shirt today) Good stuff. Thorough and direct.

[@BrickHouseBuilds]

🤣🤣🤣 I should have given that more thought lol

[@atombombsgarage]

I was wondering how this was considered a dry sump until I heard you say that this bike has an upper oil tank.

[@BrickHouseBuilds]

Glad I shed some light on how it's setup

[@c-31100]

Wery nice film but where are the hedgehog s??😮👍👍

[@Japjongetje]

That was very informative. Only one question: Why vaseline instead of normal grease? Not knocking you skills, just curious.

[@BrickHouseBuilds]

I guess I've only really heard of using Vaseline. Perhaps because it breaks down easier

[@danielkeel9265]

@@BrickHouseBuilds possibly it's clean, that is, no additives it'd just melt into the engine oil.

[@daveco1270]

What spray cleaner were you using on the engine? Was it the purple Simple Green?

[@BrickHouseBuilds]

it is simple green pro hd at about 50/50 water

[@michaelskinner896]

Interesting use of petroleum jelly. I would've never thought, haha. Also, are those bolts torqued or are they just "gut und eng?"

[@BrickHouseBuilds]

Mechanics touch on torque. If it was a critical fastener like bearing caps or case bolts I use a torque wrench. Otherwise a 6mm goes to what feels correct, an 8mm goes to what feels correct, etc.

[@michaelskinner896]

Nice! I've been twisting wrenches for a long time, but just not consistently enough to trust my feeling, haha.@@BrickHouseBuilds

[@jimclarke1108]

Interesting dry sump😁Poor old dog in the background looks a bit sore🐕You need to work out on the grass to match Mr A.M

[@BrickHouseBuilds]

Yeah she was recovering from a knee surgery. She's doing much better now

[@Nine_883]

What caused that thing to be so overfilled in the first place? Seems like something must have been leaking down or is it just from sitting for a long time?

[@BrickHouseBuilds]

It wasn't overfilled. I just didn't expect that much to come out of the lines so I may have had a tiny bit in the tank still.

[@marknichols7861]

Your dog was providing dramatic background during the screen removal. It’s hard being a dog.

[@BrickHouseBuilds]

❤️❤️

[@marcelroebert6612]

Wat is er met de hond?

[@BrickHouseBuilds]

She was recovering from knee surgery

[@carlwahlgren1484]

I just wonder if you have a any training. Because you seem to do things backwards.

[@BrickHouseBuilds]

Backwards how 🤔 🍿

[@carlwahlgren1484]

That you take off the strainer before you loosen the oil pump. I think the manual says difrent. And when you was fixing front fork p-box on the Honda 750. You started unscrew the headlamp. But you did realize it was not necessary .

[@carlwahlgren1484]

@@lesoram6236I’m not a troll. But my motorcycle interest for forty years and I have been serviced my one bikes.

[@BrickHouseBuilds]

@carlwahlgren1484 the strainer is far easier to pry off when it's held steady mounted on the bike. Otherwise I'd have to clamp it in a vise and possibly mar it up. I do it this way from experience.

[@avdmer]

@@BrickHouseBuilds You actually explained this already in the video. It made perfect sense to me once you said it. The manual is not necessarily written for when the engine is still on the bike, they might have written it from the perspective of having the engine out. Common sense and experience.

[@williamadler3003]

OMG ! Not replacing an oil cover gasket is not what a professional would do.

[@BrickHouseBuilds]

😂 Its not leaking. Gasket was in great shape and trust me, many professionals would use this logic

[@bigrockauto]

If is not broke, Don't fix it!!! Why are you even tearing this oil pump apart???

[@BrickHouseBuilds]

To inspect it. To get an assessment of engine health as this is a bike I'm reviving with unknown history.

[@danielkeel9265]

@@BrickHouseBuilds plus a nice example for an actual tutorial!