timing chain marks
doowee
12-09-2005, 02:14 PM
I have a 1992 Lumina with a 3.1. The timing chain broke.
My Chiltons says the cam mark goes down toward the crank like the old small block did. My Haynes says that with a 3 bolt camgear the mark goes up! So what's right??
I used to change one in a small block in 30 minutes, now it takes longer than that to get to it.
Thanks.........Doowee
My Chiltons says the cam mark goes down toward the crank like the old small block did. My Haynes says that with a 3 bolt camgear the mark goes up! So what's right??
I used to change one in a small block in 30 minutes, now it takes longer than that to get to it.
Thanks.........Doowee
Schurkey
12-09-2005, 06:52 PM
Keep in mind that with "the old small block"--Chevy small block--the dot on the cam gear went to 6:00, the mark on the crank gear went to 12:00 at top dead center, compression, of NUMBER 6 NOT NUMBER 1.
So both sets of directions "could" be correct, because they aren't telling you which cylinder needs to be at TDC Compression (as opposed to TDC Exhaust)
So both sets of directions "could" be correct, because they aren't telling you which cylinder needs to be at TDC Compression (as opposed to TDC Exhaust)
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