Route--66--
Well-known member
Hi
Am pretty sure I have a bit of piston slap in my '65 200ci.
When starting from cold I can hear the 'clack-clack' noise .. not really loud or anything but is definitely there until it warms up ... after a few mins.. (it's not hydraulic lifters - I know what that sounds like).. also from other websites am 95% sure it's not rod-knock.
It's not massively loud and when warm it can't really be heard at all.
It doesn't burn any oil, even when I toe it and there doesn't seem to be any blow-by that I can detect.
I notice the spark plugs seem sooty though even though I'm currently running the mixture a bit lean (and read somewhere that carbon deposits can result from piston slap ???)
This has seemed to get worse since I bought the car in June 2011 .. although appreciate that as the days got colder into winter this would happen more... but could it also have something to do with me changing oil and filter(in that that may have de-gunked something?!)
So .. main question is ..
Is this damaging to the engine and should I do anything about it or is this "normal" for this engine.
Will it just get worse or could it cause a major failure. (oil pressure is ok)
Bearing in mind I am in the UK, so to get a new block shipped here would be toooo much!.. so if it is causing cylinder damage I suppose I need to get new pistons / rings sorted before it eats too much of the block rendering it not possible to re-bore??
Assume I can't possibly just fit new pistons & rings without taking the engine out ...???!
Thanks!
Am pretty sure I have a bit of piston slap in my '65 200ci.
When starting from cold I can hear the 'clack-clack' noise .. not really loud or anything but is definitely there until it warms up ... after a few mins.. (it's not hydraulic lifters - I know what that sounds like).. also from other websites am 95% sure it's not rod-knock.
It's not massively loud and when warm it can't really be heard at all.
It doesn't burn any oil, even when I toe it and there doesn't seem to be any blow-by that I can detect.
I notice the spark plugs seem sooty though even though I'm currently running the mixture a bit lean (and read somewhere that carbon deposits can result from piston slap ???)
This has seemed to get worse since I bought the car in June 2011 .. although appreciate that as the days got colder into winter this would happen more... but could it also have something to do with me changing oil and filter(in that that may have de-gunked something?!)
So .. main question is ..
Is this damaging to the engine and should I do anything about it or is this "normal" for this engine.
Will it just get worse or could it cause a major failure. (oil pressure is ok)
Bearing in mind I am in the UK, so to get a new block shipped here would be toooo much!.. so if it is causing cylinder damage I suppose I need to get new pistons / rings sorted before it eats too much of the block rendering it not possible to re-bore??
Assume I can't possibly just fit new pistons & rings without taking the engine out ...???!
Thanks!