SOHC.co.uk Forums > Project Board
OAP Ted's CB400F2 rebuild - engine not run for about 12 years.
K2-K6:
Some of the older (than this) engines routinely use a joined chain, although I believe with a specific tool to set them. Illustrative of potential if they're ok.
I'm fine with hand peening to join things like final drive and mtb chains etc with no reliability problems. But, possibly irrationally, I still would choose continuous for cam chains as failure in any significant way will just make you weep with the distruction.
Depends also how you look at the task of splitting to replace. I feel that's easier to contemplate than the thought of distruction :) and would thoroughly clean the outside first if you are not going for a complete strip. It's really just taking the bottom case off and undoing the rods, lift out crank and swap chains, then torque it back together.
At those miles the primary will usually need replacement too, with the two contributing to how these engines sound when running well more than most components.
I suppose I don't look at changing them whole as a chore, more that I feel it's nice to work on them.
Julie's thread on rebuilding gives a very good look at making sure the tensioner works correctly if you've not already seen it.
McCabe-Thiele (Ted):
--- Quote from: K2-K6 on February 03, 2021, 04:51:45 PM ---Some of the older (than this) engines routinely use a joined chain, although I believe with a specific tool to set them. Illustrative of potential if they're ok.
I'm fine with hand peening to join things like final drive and mtb chains etc with no reliability problems. But, possibly irrationally, I still would choose continuous for cam chains as failure in any significant way will just make you weep with the distruction.
Depends also how you look at the task of splitting to replace. I feel that's easier to contemplate than the thought of distruction :) and would thoroughly clean the outside first if you are not going for a complete strip. It's really just taking the bottom case off and undoing the rods, lift out crank and swap chains, then torque it back together.
At those miles the primary will usually need replacement too, with the two contributing to how these engines sound when running well more than most components.
I suppose I don't look at changing them whole as a chore, more that I feel it's nice to work on them.
Julie's thread on rebuilding gives a very good look at making sure the tensioner works correctly if you've not already seen it.
--- End quote ---
tbh I share worries about a chain with a split link so realistically I will split the casing and change both chains.
At present the cylinder head does not want to lift off as the cyliner block is lifting instead.
What's the best way to seperate the head from the block without damaging any fins ?
smoothoperator:
Hi Ted, glad to hear your'e back on the bike! If you do choose to join the chain, have a look at mine to see how it came out. Having split my engine I can see the cases haven't been split before but the cam chain has been replaced. The image shows how badly it was done. My tensioner arm is also completely seized, however I think your engine is in better condition especially so if you were able to adjust the tension or didn't have a rattle in the first place.
McCabe-Thiele (Ted):
--- Quote from: smoothoperator on February 03, 2021, 05:12:01 PM ---Hi Ted, glad to hear your'e back on the bike! If you do choose to join the chain, have a look at mine to see how it came out. Having split my engine I can see the cases haven't been split before but the cam chain has been replaced. The image shows how badly it was done. My tensioner arm is also completely seized, however I think your engine is in better condition especially so if you were able to adjust the tension or didn't have a rattle in the first place.
--- End quote ---
Not the best riveting Iv'e seen did you fit a split link or endless replacement?
smoothoperator:
I'm a fair way off putting it all back together yet Ted but I'll be fitting an endless chain.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version