Honda CB750 Cafe Racer Engine Rebuild Timelapse

[@colbynute278]

Hey, I am a 14 year old who has been watching your videos for a while and they have inspired me to do a similar build and just today I bought a Yamaha xs750 special That I am gonna build into a cafe racer I have built bikes before but nothing like this so it is going to be a learning experience but I love the video keep up the good work😀

[@forthebold]

Excellent. Have fun building.

[@colbynute278]

Thank you😀 will do!

[@OldManTony]

I used to fear an engine rebuild (or maybe I was too impatient), but now I’m older I love the methodical level headed approach needed for anything like that. My only fear now would be parts availability and or cost!

[@forthebold]

Yes the cost on this rebuild was vast.

[@zacht9447]

I mean it's a honda so availability isn't an issue but cost

[@carltonolson6813]

That's a lot of hard work and LOVE put into your builds👍keep them coming

[@forthebold]

Sure is. First time on film for a full engine rebuild.

[@robraver]

If I ever get to interview apprentice candidates for heating/plumbing this would be one of my main questions...'have you ever rebuilt a bike/scooter engine'. Because to me if they have got an interest in this type of thing then that proves they have mechanical aptitude. I am not interested in Gcse's and phd's...its that aptitude that is the real gold. Nice video btw! :) bet they are good solid engines.

[@forthebold]

Good shout, I agree that someone with an interest in these hobbies show a lot of qualities and transerrable skills

[@shedbuiltmoto]

Just go's to show All that hard work and persistence pays off in the end. It shows in your work. Nice job !!

[@forthebold]

Thanks. Definitely more work in that bike than people see

[@BladeRicsi]

OMG, i'm amazed,please don't tell that this footage is taken in one day! Thats a lot of work!

[@forthebold]

Heck no.

[@jamieswales8749]

Great work that inspires me.cheers mate

[@forthebold]

Excellent. It’s what it’s all about.

[@nico_iannone]

A few quick question: 1. What year is this Honda? 2.What was all replaced during the rebuild? 3. Were these parts readily available? 4. How much did the engine rebuild cost? 5. How many hours were out into the engine rebuild? Amazing work, and inspiring content. Thank you for being a teacher and not pretentious like other builders.

[@forthebold]

1. 1979 2. Everything apart from the tank, forks and frame 3. Yes 4. Engine rebuild alone was about £500 6. About 40 hours Thanks for watching

[@nico_iannone]

For The Bold amazing. Thanks for actually responding ❤️🙏🏻

[@thomasgessner]

3:06: Did you put the cam shaft brackets in a box without marking them? That would be a bad idea: Each one needs to go exactly in the same place again.

[@forthebold]

Each cam shaft bracket is stamped with a letter from the factory to be put in the correct position and in the correct sequence.

[@cranky1812]

You look like a one man army👍👍👍. Great work. Few days back I watching a Honda cbx 1000 rebuild and this engine looks really similar in its head design and parts.

[@forthebold]

It certainly does have similarities. Very clever designs from Honda. Apart from the rotors on these DOHC models

[@alexferrucci5478]

When you went to install the bottom case back on did you have to use a gasket compound? I recently split my cases to throughly clean them out and was wondering what to use when I connect the cases back together.

[@forthebold]

I use Hondabond for my crank case.

[@harlo8184]

Art

[@forthebold]

Thanks.

[@dr.fourier9943]

So according to this video , the only thing you changed from the engine were the rings and wrist pins from the pistons? Great work btw!

[@forthebold]

New cranks and Conrod bearings (the main reason to go in so deep) and honed cylinders too. Checked all clearances and oil pump clearance.

[@Boin420]

Still think you're pullin me leg when you spray with the ol doot plug there mate, crack up aye

[@forthebold]

Doot plug?

[@Boin420]

@@forthebold thumb mate

[@wrichter2311]

What ink is this that you used to paint the engine and took it to the oven?

[@forthebold]

VHT paint

[@Anthrillist]

Did you have to fully install the camshaft holders to get the exhaust camshaft chain onto the sprocket? I'm rebuilding this same engine, trying to follow the service manual closely and am having some trouble getting the camshafts back in. Don't want to mess up my valve timing. Any help would be much appreciated, thx.

[@forthebold]

I did it all at the same time if that makes sense, got the teeth in place and then clamped the camshaft clamps down, there is a separate video of that part in the list.

[@Anthrillist]

@@forthebold Oh awesome I didn't even realize you had a specific video for that part. Thanks for the help!

[@cedre2274]

THANKXALOT

[@forthebold]

Thanks for watching.

[@mayo7982]

Hi. what color did you use for the engine?

[@forthebold]

I used VHT Satin Black.

[@TRRILCS]

I would like to see how you compressed the piston rings and slid the cylinder block down over the 4 pistons

[@forthebold]

the bottom of the cylinders are already tapered. no need for a separate tool to compress

[@TRRILCS]

@@forthebold thanks I wondered if that was the case, much appreciated

[@mr.murica9571]

Thinking about buying this Honda CB500 cafe racer that has a seized up engine and can’t decide if I’d want to rebuild it or buy a new one built and install it

[@forthebold]

From experience if you can find a running engine for about £500 with possibly warranty you’ll be quids in.

[@jonathanvalle127]

Beautiful

[@forthebold]

Thank you

[@jujumars3022]

Thank you for all the hardwork you share with us! Your bikes are amazing 👌. What is the green grease you put in the top of the engine?

[@forthebold]

Thanks for watching. It’s assembly lube to put in all moving parts so the first ‘dry’ movement before the oil flows doesn’t damage anything.

[@jujumars3022]

@@forthebold ok great I caught it! Thank you and keep up the great work!

[@phantienhung93]

awesome rebuild

[@forthebold]

Thanks

[@josh.t24]

what sizes are those air filters? thanks

[@forthebold]

54mm if I remember correctly.

[@kittukittu3665]

Good job 👍 , gr8 engen , Only ring change and paint 🔨🔨👻

[@forthebold]

And crank shaft bearings, cylinders honed, valve shims, measure oil pump and new rotor and stator

[@Tom-fk3bj]

CB750F is VeryGood

[@forthebold]

The F model is

[@totoisfree]

@@forthebold I just bought a 1980 CB750F that's spewing smoke and has very inconsistent power until it just gives up. The previous owner says it probably has a bad cylinder, or at least cylinder ring. Is this a doable job for me, an aspiring weekend motorcycle fiddler, or should I just use the bike as a parts back-up for my CB750K?

[@StDuz]

What the hell has happened with your production quality? It's so good!

[@forthebold]

I guess it’s always been like this?

[@builtbythehand3902]

Nice mate, after watching all you vids I really wish I'd documented my build better....... Guess I'll have to build another 😂!

[@forthebold]

Absolutely. Even if it’s just for your own reference to see the journey it’s good. Yours is looking neat too from what I saw on insta today.

[@builtbythehand3902]

@@forthebold cheers mate, not everyones Cup of tea but hey its not been built for everyone 😂

[@sriazwadiputrasripanji4687]

shout out from malaysia..fan on ur work

[@forthebold]

Thanks Malaysia

[@isaiahcorpusrealestate]

Awesome stuff!!! You’ve inspired me to build my own and I would like some general advice on reassembling an engine. I have a CB 650c. Also where do you get your engine parts? Would be grateful for a reply.

[@forthebold]

I get all my engine parts from David Silver Spares.

[@OBIOsim]

Not being a rider, I am curious about the trend in painting the engine....specifically the fins on the cases. Does the paint reduce the ability for the engine to cool off via air flow over the fins?

[@forthebold]

Doesn't alter anything, purely looks, some do polish the fins to possibly allow the ends to cool, but very minimal change

[@OBIOsim]

@@forthebold Thanks for the reply. Now I have a bit more knowledge about the ins and outs of bikes...and thanks to your channel...and a good number of others...I am dizzy with the urge to buy a early 70s Honda CB and build a Cafe Racer....and get my bike license....I haven't ridden a motorcycle in 28 years and really miss the feeling of all that openness and freedom.

[@GarageBuddys]

Beautifull time lapse 🤟😎

[@forthebold]

Thanks :)

[@AndreasBolander]

Awesome build! 🍻 Quick question, which jet sizes did you use for the carbs?

[@forthebold]

I think it was 78 secondary mains and 118 primary mains, the video for it is in the playlist

[@dragoon9082]

Quick question... Having issues with my 81 cb750 c... Any chance I could get a reply back about carb issues? I've been struggling to get this poor ol thing running quite right... Ran half decent before carb rebuild, now i can't quite dial it all back in after a full rebuild, has to be ran full choke and it stutters at that. Any throttle and it dies... Any suggestions?

[@dragoon9082]

Reason for the rebuild is it never quite ran at 100%, carbs leaked at idle, but were fine under load, still having same issue after rebuild...

[@forthebold]

Are you running pods or original air box? Sounds to me like it’s not getting enough fuel to air ratio

[@dragoon9082]

Running pods on stock jets, don't know if it's too much air or not enough, or vise versa on fuel...

[@forthebold]

That would be 100% the issue. What brand pods also?

[@dragoon9082]

Figure I should add that it's pretty much straight piped ...

[@rere439]

I love 4 cylinder bikes, their sound always lovely, make my soul happy. Why latest honda just make 2 cylinder, I'm so sad

[@forthebold]

Any bike sound makes me happy. Even my single cylinder big thumper Maico.

[@rere439]

@@forthebold nahhh

[@zacht9447]

Honda still makes plenty of 4 cylinder bikes, CBR's VFR's CB1100 all sorts

[@andrewb5816]

How much does something like this cost?

[@forthebold]

All depends on the work, condition of the donor etc. I always aim around £5,000 budget

[@marleneelias670]

i wish i could have that motorcycle

[@forthebold]

Me too

[@hwntwww]

Any colour you like, as long as it is biker black

[@forthebold]

Have you seen any of my other builds, definitely not much black in those.

[@hwntwww]

Motor bikes and bikers are still in the dark ages, building objects similar to those of the 1960s.

[@forthebold]

Well this engine and bike is 40 years old and the Cafe Racer movement does hark back to the 1960s, so bang on with that date

[@jerryschneider145]

Cylinders should have been scored with a cross hatch.

[@forthebold]

They have been. Check out the more in depth video in the series and you can see the details there.

[@BIBIWCICC]

Ouch please don’t ever build another engine. The grit all over the bench whilst assembling pistons!! NASTY. That will be another glitzy on the outside crap on the inside retro bike.

[@forthebold]

Well cleaned before being put in, and been running well and still going for a year. it's not my first rodeo

[@timothywhieldon1971]

not the way i would have done things but ok!

[@forthebold]

No problem at all. Out of interest how would you have done things?

[@totoisfree]

@@forthebold Ah, things. And the way they are done. Let me consider the ways.

[@lpllol9460]

Stop people plz stop rebuilding old pieces of shit from the 70s and 80s all you’re doing is encouraging skinny jean hipsters to bring their craigslist junk into my shop for an unrealistic expectation Of what a motorcycle is they sucked when they were new and they are even worse now

[@forthebold]

You could never stop me. I say it’s good these skinny jeanes hipsters are bringing life back into these old bikes. Someone needs to