What's wrong with the CB750 engine?
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- Опубликовано: 1 дек 2019
- CB750 rebuild videos - howtomotorcyclerepair.com/cb7...
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CB750 rebuild videos - howtomotorcyclerepair.com/cb750-rebuild-videos
I'm truly surprised you don't have more subscribers. They are well deserved!
Thanks. Spread the word about this channel!
Re doing the plating on the bolts, the Honda exploded view shop manual is very good at telling you the size (overall L and Dia) of the bolts and where they go. What they don't tell you is the length of the unthreaded section of the bolts. So, when I took mine apart, I noted both lengths so that I had a fighting chance of installing the correct bolt in the proper spot.
What size bore honing tool did you use I need to find one to do the same thing that you're doing and I want to make sure I get the right size thanks
Wouw...it aint gonna be a cheap rebuild.
Nope.
Aw shit. You making me want to tear down my 75 cb750 and go through everything. I'm already tight on cash converting 83 xl600r to supermoto.
Have a diff of opinion re crank re-welding. Here in S.A. have had done many white metal cranks done. Far as i know the bearings can even be made/re-white-metaled. Way back in my appy days watched a car mechanic using a bearing scraper to get the correct clearance. Friendly Greetings Bjorn
Ps; appy days where 1978 at Tiger Yamaha Jhb S.A.
I bought a good used crank for $39 dollars. That is the best option IMHO. Scraping bearings? Seriously?
@@HTMR en.wikipedia.org/wiki/Hand_scraper
@@HTMR By the way agree $39 better bet
@@HTMR I recently read of bronze giude liners for a CB750. The word retarded comes into play and I have a 106HP CB750. I make a billet cylinder block
Nice work Mate, bolts always get lost at the players.,plate them yourself, easy.
That bike needs a 900 kit and some 29mm smoothbores,not flatslides keep it period correct..
Do a light porting job.
Having done my apprenticeship 45 yrs ago as an engine builder and having built many bike motors, including my current gs1000, slow the hone down a bit, you are going in and out a little fast, you will end up with even a better pattern.
In the days when bearings were bearings and always available, we would have metal sprayed them up and re cut them.
Bloody Honda I have the same thing with my 79 CBX.
Otherwise you doing real good.
I know it all costs money, but I will never reuse a white metal bearing on a rebuild, just not worth it.
Thanks. I did get a 45° pattern with hone, so I thought my RPM/stroke speed was OK. Cylinders were bored andyway. I'm going with new bearings. Here is the new parts video:ruclips.net/video/SCqa_7H7hKs/видео.html
I'm going to need plating for screws and bolts for my own CB750F (DOHC) rebuild can you tell me the metal plater you use? I have broken down the bike and now I'm ready to inspect the engine to see what it needs internally---thanks for all the great videoc
I actually got them plated for free from a family member who works in metal fab, and they plate stuff weekly. Anyway, I was going to use these guys: streamwoodplating.com/
Thanks I'll check them out.
How did you account for the 'non-available' rod and crank bearings. All the sites I've seen have 'poor' availability of all the bearings.
I already bought them from partzilla. Green mains, yellow rod.
Many of the colors are NLA.
@@noidontthinksolol Most of the different colors rod and main bearings are NLA from Honda. If you had codes that matched to available mains and rod bearings you
got very lucky.
What year 750 ?
I have a 79 cb750k and gonna do the same thing as you as soon as I get done with my 79 Suzuki GS850
Mine is a 78' K.
79 is a DOHC version. Basically totally different animal. 4 cylinders and 5 speed transmission and that's about all the same as the SOHC model.
Are cvk36's basically the same as cvk40's?
I would have to say yes most likely.
I'm surprised you don't do your own zinc plating.
Not yet at least LOL.
I just buy new stainless steel bolts or new plated bolts
Actually if you're stuck for those 5% of bolts you might talk to your machine shop?
Already had them plated and came out great.