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Discussion Starter #1
Well I finally give up, I broke a shim damaged the cam and broke the shim bucket today on the #2 exhaust valves. These were the hardest and the shim popped out as I was cranking the engine over to set the shims in place on the bucket, but apparently one of the shims wasn't all the way in place and popped out of the bucket. This bike has damn near fought me every step of the way to this point and I just don't have the will anymore to tear the engine down now and rebuild it. Not sure where I'm going to go from this point, or I may buy another 750 and transfer all the stuff I did to this bike to the other, or swap the engines, dunno yet. But as it stands this will be the first project that I ever gave up on, usually I'm stubborn and never give up but so far this bike is just one big ass example of murphys law.

22/m
1980 Honda CB750
1972 Oldsmobile 442
 

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Sorry to hear it, but I wouldn't blame ya. It's probably better to move on, particularly if you can get some of your time and money out of it by parting it out or selling the whole lump. Summer is coming, you need to be working on something you can ride.(IMHO)
Good luck!

FR
 

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Hey man, sorry to hear about your troubles. I've been there!!! What helps me is to walk away and go finish another project and come back to it with a clear head later, unless it's your only bike then ya gotta beat that fucker into submission untill it goes your way!!!! Either way you go, good luck.
 

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Bummer, push it in the corner for a few days clear your head.

There has to be a million of those motors around the Customs, Fs, and Ks all used the same motor. I believe a 900 will drop right in. How wounded is the cam? It wouldn't be above me to put a bucket in it and ride until you could do a better fix.

04 KDX 200
05 KX 250f- SOLD!
01 GSXR 750
75 GT 550
68 Chevelle
 

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Discussion Starter #5
Well my mind is more clear now, what I'm going to do is find a bike I can run around and just work on this bike some more, like rebuild the head, bump the compression, port it, stuff cams out of a cb1100f in there and have some real fun. But I will be parking it for a while. Right now I'm going to look at a super clean 92 GS500, I just want something to run back and forth to work and my girl at college (she lives a 100miles away. The CB750 will turn into my fun bike

22/m
1980 Honda CB750
1972 Oldsmobile 442
 

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quote:
Well my mind is more clear now, what I'm going to do is find a bike I can run around and just work on this bike some more, like rebuild the head, bump the compression, port it, stuff cams out of a cb1100f in there and have some real fun. But I will be parking it for a while. Right now I'm going to look at a super clean 92 GS500, I just want something to run back and forth to work and my girl at college (she lives a 100miles away. The CB750 will turn into my fun bike

22/m
1980 Honda CB750
1972 Oldsmobile 442
I hear ya, it is tough sometimes. If you want I have a decent 1982 GS850GL I was going to sell. My buddies bike I got from him in trade, clean and he rode it for 5 years without a problem. Parked it last summer because he bought a roadstar. It is a little chopperish (like your cb custom was) but it is dependible and fuckin fast.
 

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did you say crank the engine over.....(with starter)...I was wonder how so much damage occurred.For the rest of you guys hand turn you motors,when adjusting the head its delicate and sensitive till you get it right .Im sorry at this point I know you want to sledge hammer it.your new Idea sound like you will be asking for more trouble just find a stock head thats fresh and stick it on and be done with it .its plenty fast enough.

Im so far behind ,that I think Im in first.
 

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Discussion Starter #8
quote:its plenty fast enough.
its never fast enough lol. I've been planning it for a while so I might as well now. I'm going to look at a 92 GS500 so I have something to ride around, till then I'm going to park my CB in the shed and collect the parts I need till I'm ready to work on it again. I'm going to look for a dual front disc front end, 1100f cams, and direct lift carbs. I'm going to brace the frame, and swingarm, port the head, rering and hone the cylinders if needed. I just want to make the bike funner to ride, and should give the bike gobs of midrange power which equals fun

22/m
1980 Honda CB750
1972 Oldsmobile 442
 

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quote:
quote:its plenty fast enough.
its never fast enough lol. I've been planning it for a while so I might as well now. I'm going to look at a 92 GS500 so I have something to ride around, till then I'm going to park my CB in the shed and collect the parts I need till I'm ready to work on it again. I'm going to look for a dual front disc front end, 1100f cams, and direct lift carbs. I'm going to brace the frame, and swingarm, port the head, rering and hone the cylinders if needed. I just want to make the bike funner to ride, and should give the bike gobs of midrange power which equals fun

22/m
1980 Honda CB750
1972 Oldsmobile 442
If you are going to do all that work, can I make a suggestion? Go find a real F rolling chassis instead. Seriously.

the K and C bikes were intended to be standards and crusiers of the cb750 line and therefore were expected to carry heavy loads and not be used the same way the performance minded F was. To save weight the C and K frames are actually made of thinner wall tubing than the F bikes. Since you are on your way to building a supersport style bike you might as well do the cheap thing and that is get an F bike and use yours for parts for it (the engines are the same) or find a rolling chassis and build your bike around that. the DOHC cb750s are not that expensive (I paid $350 for my 750F and $300 for my 900f) so focus on getting one. If we were in the south I could point you to a junkyard that has 5 with blowed up engines.

Actually, if you have the cash in hand I know where there is an 1100F locally really cheap (been sitting). If I sell my GS I am going to run right upstate and grab it.
 

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Glad you're gonna keep the bike. Think of it this way, when you get to the point with a machine where it seems like you've just about fixed/fucked with everything on it, why sell it or give it to some other creep who only has to do one or two things to have a nice, sorted out bike?

I've got some kind of sickness for doing this. Out of frustration I've practically given away at least a dozen bikes and cars only to hear about how few problems the lucky assholes who got them off of me had with them.

I have a couple of friends who are worse than I am. One guy seems to only get himself into really cool bikes (a super clean CB400F, an '86 GSXR 750 streetfighter, a '73 Bonnie, a beautiful KZ900, an awesome cafe'd XS650) only to COMPLETELY restore them, get sick of them and sell them off for a song out of some frustrated, self-destructive impulse. Right now he's building a beautiful Shovel bobber, a WORKED 750 Bonnie and he just re-acquired the KZ900 (in a LOT worse shape then when he got rid of it). It hurts to watch it sometimes...

Honda go sideways!
 
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