Hi, First timer. The timing chain on my 1993 610 WXE brole and the exhaust valved lightly touched the piston. The valves "look" untouched and the piston has two small crescent shaped divots. The question is whether this is an automatic replace the involved valves, chain and piston, or can I merely add a new link to the chain and put it back together. If this is an outrageous question with an obvious answer please forgive my naivete but this is the first time I have encountered such a problem. Thank You, Bill Pierce
Never replace a link of any chain that breaks. You are merely asking for it to fail in another spot, very shortly. New chain, and probably new valves/piston too. Possibly inspect the cam for damage?
I think that the piston is probably fine, unless the divots are deep. Any markoff on the piston should be cleaned up to remove any sharp edges. At the very least, have the valves and guides/seats inspected. And, I would definitely replace the cam chain.
Valves usually get tweaked whenever there is contact sometimes doesn't show unless leakdown test is done.
timing chain and gears for sure you say 93 have someone who knows whats what look it over REAL GOOD if its worn enough for the chain to break its got alota time on it or something else failed and caused that to happen fix it right so it stays fixed thats alot cheaper than doing it wrong 2 or 3 times
