CB750 Restoration Part 21 - Rebuilding Carburettors and Preparing to Start

[@geoffwalker1531]

The beat video i have seen so far on these. You successfully ahow how to test all the passage ways

[@CB750K]

Having KZbin around for this sort of thing is amazing. When I was doing all my CB750 projects in the 90's, I just had to do sort of figure this stuff out myself with whatever bit of help Chiltons and Haynes had to offer. These days we can watch guys like Peter here, and it's fantastically helpful.

[@leifsimmons2464]

Peter, the red tubes (the straw on the WD40 can) can be made more narrow by warming it carefully at some point until it almost melts. Then you carefully pull it apart and elongate it as well as making it thinner. Then just cut it where it has the diameter you want. I've used this trick when I want to be able to spray into tiny holes or very precisely direct where the stuff goes.

[@stevencarboni3091]

Looking good Pete, a tip for cleaning carb jets, i wind a single strand of wire off a bike brake cable , it's small enough for even the smallest pilot jets and the gentle spiral left in the cable helps clean out the jets without damage Cheers Steve

[@casketrepair]

Christ that's the most beautiful carb iv'e ever seen

[@MidwestMotoRider]

You did a FANTASTIC Job on those carbs, I have done those a few times and just never got them together so easily. Can't wait to hear her run!

[@LukeLovett]

That gold plating makes it look like art. Impressive.

[@robaylmer2450]

absolutely bloody brilliant! Thank you for such a detailed explanation, i am now a lot wiser :-). and yes please keep all the resto's coming, the more the merrier! My 500 has got as far as taking the tank and seat off, then had to fit a clutch n stuff to my friends smart car - enjoyed every minute! itching to get back to my bike! Best regards mate and thank you!

[@BryanFitzpatrick8BellsBrewing]

Peter I’m gearing up to restore the exact same bike , your videos are pure gold. Thanks so much. And yes more bike vids.

[@PeterAndersons]

Thanks Bryan, I still need a few parts to complete it but happy with its progress. Cheers and thanks for your comments.

[@DillonHuffmanOutdoors]

Been working on my '77 CB750F for around a year now. Going to be going through carbs pretty soon, so this has been really helpful!

[@PeterAndersons]

Excellent Dillon, thanks... just don't forget the restrictors in the accelerator pump lines... I threw mine out! Cheers

[@st-qd8wg]

Hi, do you have F2 ??

[@tonypuskadjia868]

Hi Peter your doing a fantastic job 😁👌🏻👌🏻👌🏻👍🏻

[@johnrimmer5812]

Nice one Peter, top job.

[@lyndonmason]

Fantastic. Keep them coming 👍

[@jimh.5286]

I had a brand-new 1978 CB750K, and yep, it had a stiff throttle...I fixed that with a wire extension on the throttle springs. I rode it for about 5 years, then sold it to my brother-in-law. He put about 75,000 miles on it, then it was wiped out by someone who ran a red light (he was not seriously injured).

[@markgenest6968]

Thanks this really helped me!

[@lynnhoskins5286]

yes peter do more bike builds you provide great video of the build with very detailed information on how every thing is done and put back in good nick thank you for what you do lynn

[@colemadad]

Peter - you're an ar-teest. Great fun to watch, thanks. Oh yes - and more bikes would be right on.

[@Dragonballguy270]

This will sound corny but that was epically therapeutic

[@danmadden1080]

another great video - thanks

[@coldwarmotors]

A beautiful job as usual, boss. Really can't wait to hear it start, now! Cheers from here...

[@Andrew.quigley]

Cheers Peter, we all can't wait to hear this little riper come to life. To those who thumbs down these videos, do us all a favour and don't watch them.

[@MrButtonpresser]

Yes, more please!

[@Cromwell648]

Cheers mate another cracking video. Can't wait to hear her roar 👍

[@owen5834]

Would enjoy another motorbike Peter, enjoy everything you do!

[@daleyurk4369]

Beautiful! Thanks for doing this episode Peter. You're going to have to travel the Great Ocean Road on the bike and film it!

[@markssmallengines3542]

Wow the carbs came up beautiful pete, she is so close to starting now i can't wait 😁 i never knew you could adjust the slide ither. Thanks for the detailed carby rebuild vid an definitely more bike builds, a 77 KZ1000 would be a nice bike to build. Take care cheers Mark.

[@tobus71]

VLC media player, free and runs everything.

[@cogidubnus1953]

And imho it's incredibly good too! It's the default viewer on my outfit...

[@icondonnied]

DITTO! VLC is the way to go

[@daveb5016]

www.codecguide.com

[@josephburch2301]

Yes build more bikes. I'd like to see you build a hot rod of some kind too

[@ianwilson4666]

Gawd, if Rubix made carburettors, well done Pete very watchable .

[@TheMrShinagami]

Thank you for another great video Peter, I know what you mean about the carb kits, I can get 3 different ones for my Superdream and looks like I may need 2 for each carb to make sure I get everything I need. I need to do more research as I've just picked up a copy of the Honda workshop manual but haven't had a chance to read through it yet.

[@cogidubnus1953]

Thanks Peter...I'm reassured to know there's further enjoyment to come Dave

[@seanwynkoop474]

I have been looking for someone that has the spring / Coke MINGHTMARE @ 22:40 mins in the video ..... I have a 79 CB650 and it has this setup.... this is a great vid showing the 50A Carbs Funny thing was I was looking under CB650 ... I never knew they used this carb with this setup on the 750 ... I just ran across your video .. SO GLAD I WATCH IT !!!

[@PeterAndersons]

Thanks!! Yes, I would prefer the earlier and simpler carbs, I'm not a huge fan of the complexity of these, cheers.

[@memybikeni9931]

This is such a brilliant series, put my bike fettling to shame. 😄

[@cambo1200]

More bike builds would be great. It honestly doesn’t matter what you’re restoring, your vids are very interesting.

[@Maker_HQ]

Brake fluid for softening rubber... works a treat.

[@2burning2turning]

Yes!

[@gosportjamie]

I think the cafe racer project would be a good one for the channel if it's something that interests you enough to put the money in to. It's nice to see the variety on the channel, such as the project bikes and the more modern cars as well as the classic car projects, they all have things to teach and interest people without really stirring up the vehicle rivalries (Ford vs Holden in Oz, Ford vs, well, everything in the US...)

[@AllSortsOfStuff58]

What a job. I'd have to get someone to do this for me. I'd never get them back together again. If I did they probably wouldn't work. Can't wait to hear the 'voice' although I'm guessing it'll be a shout without exhaust pipes fitted.........lol.........David(UK)

[@BasicPoke]

Earlier carbs are quite a bit simpler. Thanks Peter. More bike videos!

[@PeterAndersons]

Yes, these carbs were a pain! Thanks for the comments, cheers

[@beedalbahgraham2981]

That was a feat and a half!

[@krabkrabkrab]

Nice vid as usual; 2 notes, or questions. 1. The choke shaft is a rather loose fit through the carb bodies and dust can get sucked into engine through this clearance. I seem to recall that there are felt washers on the shaft to act as filters. 2. I thought I saw you pull tiny o-rings out of the hole for the mixture screws. Did not see you put them back in.

[@DillonHuffmanOutdoors]

+1 on the felt washers. I bought some from motorcycleproject.com

[@robertthornhill4379]

hi peter i like this one good job done bob in uk 10/10

[@loloaqici82qb4ipp]

Saying you "like" this is akin to enjoying a nightmare but then isn't it great when you wake up and smell the coffee.

[@sergiomingorance9125]

Brilliant job, just got my barn find 1972 and can't wait to start I live in Boronia and you mention a lot of suppliers around here, can you supply me a list of places, I have been doing Italian bikes until now so no idea about honda special parts

[@Mercmad]

I was repairing gas burners for a relative for a while and had a set of drills used to adjust jet sizes . When i saw you using tip cleaners to unblock a jet i thought you could get a set but... 30 years ago mine cost cost $350 .... stick to tip cleaners. ha ha

[@markman63]

I noticed you pulled out an oring from the idle mixture screw. My shop manual shows two orings or one oring and a washer. When I opened mine nothing came out. I might have to look closer for the oring but what about the washer?

[@mikelast7918]

hi, im in the process of rebuilding the carbs on my cb750....are you able to recommend a good gasket and re build kit...?

[@zifu_]

Yes more bikes please!

[@nuttop01]

hi peter just a quick question how and what do you clean every thing in, it is just mint great videos thanks

[@joshonthetube]

That green tubing looks very much like the OE correct stuff for old italian cars (and, i assume, bikes). I like the look too.

[@Bodi2000]

Best to reuse the original jets and needles. Unless you buy genuine Keihin of course... $$$ and I don't think the pilot jets are available. Aftermarket brass parts are just not very good. Some other cleaners are better than solvent for jets, I use "simple green" with some success. The side holes in the main and pilot emulsion tubes are not critical. Once you get some opening through the metering holes thread can be run through and used to polish the orifice.

[@gosportjamie]

+DW Macaulay I totally agree, there are a lot of companies that are targeting the "classic" market with substandard parts of all types because there is less regulation over parts quality and material standards for older vehicles whereas the parts for modern vehicles have to be at least as good as the original if not better...

[@andrew8502]

you can buy the pinky/clear oem fuel line from honda dealers if you prefer that over the green hose

[@Sludgefactor711]

I just bought a 1978 Honda CB750k for 500$. It's been sitting for 3 years. Any advice for prep work and cleaning before I start it?

[@fireman1073]

the accelerator pump tubing that goes between the carburetors have small brass restrictors in them, not sure how necessary they are but you replaced the tubing without them, check the old tubes. nice job by the way

[@markman63]

Hello, where did you buy the gaskets?

[@gak2215]

Mr. Anderson I have a 1978 Honda CB750k. Could you possibly tell me the correct carburetor kit I need to buy for my bike? This is my very first motorcycle and it's been sitting since 01

[@franciscorios9262]

What do you have installed for the bowl vent at 39:44 mine had nothing attached when I got it

[@robertdees2179]

I am working on 1978 cb 750. Have cleaned several time . Will only start with choke on. Any idea what to look at?

[@baldprisonguard1]

Yes on the cafe! My twin daughters want cafe style bikes and I just picked up a 77 and a 74 CB550 for them.

[@kathyquinlan5922]

ICU ? No I was thinking more like stealing grand Pa's O2 tubing ;) More than Full on ICU ;) The bike is looking good can not wait to see it running :)

[@growingknowledge]

Wow, what a drama, it will all be worth it though mate !

[@bigears4426]

Theres nothing like putting things back together a few weeks later, especially one offs

[@philr300]

Did you buy that CB350 cafe project? It's coming up on eBay as gone.... :-)

[@PeterAndersons]

I noticed that...

[@VictorManuel-pf7se]

I ended up going with a twin carb setup. Huge difference in throttle response and overall start ability.

[@PeterAndersons]

I'd like to know more about that...

[@VictorManuel-pf7se]

@@PeterAndersons I bought them from a company called Murray’s carbs. He makes a real good looking cast aluminum manifold I believe in house and it uses mikuni vm34 carbs. Real sweet setup and best upgrade I’ve made hands down.

[@erinadkerson6867]

I'm also building this same bike, right now im on the carbs, but I've noticed my throttle return spring is missing, was wondering if anyone can point me to an oem replacement? I've looked but can't seem to find anything

[@PeterAndersons]

Yes the K7 and K8 carbs are different from all the earlier models... at one point I considered retro-fitting an earlier set.

[@erinadkerson6867]

@@PeterAndersons thanks! I finally figured it out a day later but got it all together now

[@marcellvisball]

At 11:21 you had a washer next to the newspaper. You move the paper on top of it hiding it. Where does this washer go?

[@Commander_ZiN]

Your old machine should play videos but they might be slow if played in a really high resolution and your hardware can't keep up. Install www.cccp-project.net codec pack you just need the compression decompression software installed for windows media player to work. You can also install VLC media player it comes with a bunch on these included.

[@gosportjamie]

It's not too hard to see why some people, even those familiar with car carbs, find these Japanese bike carbs a nightmare to work on. On the up-side, these Keihin units are top-quality kit and, as long as they haven't been utterly wrecked by ham-fisted fiddling or corroded to pieces, a lot of the parts can be re-used in a rebuild...

[@Mad-Duk_Machine_Werkes]

Welding tip cleaners are a bad idea for multiple reasons - best to take a big wood-handled wire brush and pluck ONE individual strand out with needle nose pliers and poke that thru the jet holes

[@Jaysqualityparts]

Funny not funny had exactly the problems as you with wrong jets and pain in the ass spring for choke rod

[@vanceburns1743]

Your dreadfully long winded chap. The time wasted listening to you yap takes all use out of the info

[@PeterAndersons]

The time wasted on this redundant comment could have been used searching for other content...

[@tonymontana897]

In the credits, how does "upside down Josh" write his name up side down ??