+- STD (https://www.superturbodiesel.com/std)
+-- Forum: Tuning (https://www.superturbodiesel.com/std/forumdisplay.php?fid=6)
+--- Forum: Engine (https://www.superturbodiesel.com/std/forumdisplay.php?fid=7)
+--- Thread: om617a timing chain acceptable stretch (/showthread.php?tid=7031)
om617a timing chain acceptable stretch - Evenglass - 02-04-2016
Bought an entire running 300d for its engine. Engine runs great and has 220k on it. Would you change the timing chain and guide rails if no visible wear and only 2 degrees of stretch???
RE: om617a timing chain acceptable stretch - barrote - 02-05-2016
hehe.. nop definetly nop , where did u measure the stretch? cam or valve lift?
u know that the 617 can be set in time by the use of displaced woodruf keys ?
Just for fórum knowledge i started to retime 4 valves , by cutting new position in the cam sprocket and til now none has complained yet!! i mean chain broken
anyhow i read somewhere that 10º stretch measured at cam position is almost at colision, not sure of it!!!
regards
RE: om617a timing chain acceptable stretch - Evenglass - 02-05-2016
(02-05-2016, 04:52 AM)barrote hehe.. nop definetly nop , where did u measure the stretch? cam or valve lift?Thank you barrote. I will be freshening up engine #2 and figured I'd change things out while it's apart but no sense in changing things that don't need changing.
u know that the 617 can be set in time by the use of displaced woodruf keys ?
Just for fórum knowledge i started to retime 4 valves , by cutting new position in the cam sprocket and til now none has complained yet!! i mean chain broken
anyhow i read somewhere that 10º stretch measured at cam position is almost at colision, not sure of it!!!
regards
RE: om617a timing chain acceptable stretch - barrote - 02-07-2016
yep... the chains are lifeless, if u ever think of change one , use MB , there are things inside that u should not play with ...
when the chain guide exibit wear the engine tends to rattle , due the fact that the chain is running in and out , in this case the guide should be changed, the guide maters litle if it is MB or not ....
regards