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CB350/400 / Re: 400 engine repair or replace
« on: March 24, 2014, 01:21:54 PM »
Guys,
Got the engine fully stripped and am deciding whether to bin or rebuild as the general condition isn't very good inside.
Cosmetically all is OK on the outside and joint faces, fixings etc. are all OK which is the good bit.
Pistons / bores are badly worn - clocks show 56k miles so maybe original and just run into the ground by previous owner(s) - I've had great advice and help from one forum member already so think this can be solved quite easily / economically with new liners and pistons.
Camchain guides all look quite worn but I guess are easy replacement.
I think the deciding factor is whether the non-easy replacement bits are serviceable so I'm after a bit of advice on the crankshaft as start.
The crank and bearing areas all look visually OK but I think the big-end side clearance may be over limit - from the old Haynes manual I've got it looks like this is simply a feeler gauge measurement and if so mine is quite a bit looser than it says it should be. Is this the best quick check on condition or would the engine be OK even if there is some excessive wear here?
I'm guessing the crank will be the deciding factor on the fate of the old girl so any advice etc. welcome on how to assess this will really help the decision.
Cheers,
Andy
Got the engine fully stripped and am deciding whether to bin or rebuild as the general condition isn't very good inside.
Cosmetically all is OK on the outside and joint faces, fixings etc. are all OK which is the good bit.
Pistons / bores are badly worn - clocks show 56k miles so maybe original and just run into the ground by previous owner(s) - I've had great advice and help from one forum member already so think this can be solved quite easily / economically with new liners and pistons.
Camchain guides all look quite worn but I guess are easy replacement.
I think the deciding factor is whether the non-easy replacement bits are serviceable so I'm after a bit of advice on the crankshaft as start.
The crank and bearing areas all look visually OK but I think the big-end side clearance may be over limit - from the old Haynes manual I've got it looks like this is simply a feeler gauge measurement and if so mine is quite a bit looser than it says it should be. Is this the best quick check on condition or would the engine be OK even if there is some excessive wear here?
I'm guessing the crank will be the deciding factor on the fate of the old girl so any advice etc. welcome on how to assess this will really help the decision.
Cheers,
Andy