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CB77 Engine restoration.

Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...
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davomoto
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Location: Marin County CA

Post by davomoto » Sat Nov 17, 2007 12:26 pm

Yes, these cases were indeed beed blasted. I know that the ultrasonic cleaners are supposed to work well, but I have not personally seen cases that have been cleaned that way.

davomoto

FiremanBob
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Location: New Hampshire, USA

Post by FiremanBob » Sat Nov 17, 2007 4:53 pm

Thanks. I tried an ultrasonic cleaner and while it did ok removing gunk, it doesn't do anything about the corrosion on the surface. I am halfway there, having just bought a compressor today. Now to scour Craig's List for a blasting box...

deez
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Location: san francisco

Post by deez » Tue Nov 20, 2007 11:53 pm

looks good davo cant wait till the parts come in to finish that thing off.

bill440cars
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Location: Arkansas

Post by bill440cars » Mon Mar 17, 2008 12:14 pm

davomoto wrote: Some on this site said that he was told that a five speed trans from a 68 CB350 would drop right in. No one has confirmed or denied this yet. Hopefully someone on this site has or will try this conversion. These bikes are held back by the four speed trans, but we still love them !

Hey dave. That was me that had said that the 68' (and ONLY the 68') 350 trans was supposed to be able to be used in the CB77 case. I'm going to have one of those transmissions coming to me before long (not exactly sure on the arrival date yet. I was given the info from a prominent member of the SOHC4 forums. Then, as soon as I know for sure about the fit, I'll be sure to pass on the results and pertinent info (hopefully, with pictures). My concern, as of now is, the fact that the CB77 clutch is driven by chain, while the CB/CL350 clutch is driven by gear (which turns the clutch and the shafts in reverse compared to the CB77 clutch and shafts. This is being looked into, as we speak. It may be that the crankshaft gear from the 350, will go right on the crankshaft of the CB77 and mate right up with the clutch. I don't know at this time. My source DID this conversion years ago and has no documentation except for memory and doesn't remember having any difficulty. I am very intent on doing this conversion, if at all possible and will document, to the best of my ability, the conversion.

Now, I have a question myself. I must have missed the subject of X-ing the trans gears. Could you elaborate on this please? I'm assuming that it involves swapping certain gears in the original trans. I'd sure like to hear more on this, like what is done exactly and what the benefits would be. I hope to eventually be building a 2nd bike and won't have a 68' 350 trans for it and might just try the X-ing thing myself.

Take care, Bill

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davomoto
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Post by davomoto » Mon Mar 17, 2008 2:31 pm

Bill, check out this thread. Also if you have the Bill Silver engine repair guide, page 67, gears # 9 & 11 get swapped with gears # 8 & 10.

http://www.honda305.com/forums/viewtopic.php?t=1742

davomoto

bill440cars
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Location: Arkansas

Post by bill440cars » Mon Mar 17, 2008 10:32 pm

davomoto wrote:Bill, check out this thread. Also if you have the Bill Silver engine repair guide, page 67, gears # 9 & 11 get swapped with gears # 8 & 10.

http://www.honda305.com/forums/viewtopic.php?t=1742

davomoto
Hey Dave, Thanks a bunch for the info on X-ing the trans gears. That is really interesting stuff! I don't have the Bill Silvers Guide as of yet. I can see where that would be most beneficial to make that change alright. Thanks again and I'll let you all know when I get that 68' 350 trans installed and see how that works out.
Take care, Bill

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davomoto
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Post by davomoto » Mon Mar 24, 2008 4:01 pm

Here's some pics of the engine buttoned up. Hopefully we'll have a mock-up bike in a couple of weeks so we can fire her up. It really came out nice, with the graphic designer hounding me every step of the way! Deez has a great eye for detail, and didn't miss a thing! The list of new parts is quite long, and includes ...... cam chain, cam chain tensioner, cam chain wheel, Wiseco piston and ring kit, govener springs, points and condenser, stainless bolt kit, kick pawl pin and spring, clutch friction plates and springs, all new gaskets and seals, tappet covers, clutch lifter and thread, and surely some other items I'm forgetting! Gears have been X'ed, valves and seats cut, engine bored second over, cases bead blasted, covers either painted or polished. This is gonna be one slick Cafe' bike!
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