Cam install not good, some advise please
#11
10-14-2014, 02:10 AM
Sound advice. I'm gonna price them out, may pick one up.
Agree, the valve was pushed off the seat pretty good. Just don't understand why the exhaust valve would have the problem, it has less lift and smaller diameter, and only on one cylinder. Will try to get the heads pulled tomorrow.
I can youtube it but how do you measure valve stem clearance? I also had another guy tell me it could be a stuck valve guide.
When you have the heads off check the valve stem clearance too.
I still say your problem was:
" looking back they did compress the valve quite a bit and pushed it open a little when tightening down the roller rockers. Big mistake and now going to cost more than just rockers."
I still say your problem was:
" looking back they did compress the valve quite a bit and pushed it open a little when tightening down the roller rockers. Big mistake and now going to cost more than just rockers."
I can youtube it but how do you measure valve stem clearance? I also had another guy tell me it could be a stuck valve guide.
#12
10-14-2014, 02:32 AM
Did you install your Timing Chain Dot-To-Dot? On my Camshaft Sprocket, there are actually 2 dots. 1 puts the #6 cylinder at TDC (proper one to use), and the other dot put the #1 cylinder at TDC (Don't use that one, I made that mistake because it was the bigger dot). It sucked to have to re-do all that work.
Crank is at 0* using the rounded keyway slot, circle symbol at 12 o'clock
Last edited by beeker; 10-14-2014 at 03:29 AM.
#15
10-14-2014, 08:42 AM
Cam is 180 out to the crank your on the intake stroke with the crank exhaust stroke with the cam. The way you have it the 1 and 6 slug should be BDC not tDC. 1 AND 6 slugs are a mirror image (otto cycle). max lift on stock pistons and stock 1.92 valves is .544 at the valve. With 2.02 valve you lose p2v clearance significantly needs to be checked.
#17
10-15-2014, 01:53 AM
Cam is 180 out to the crank your on the intake stroke with the crank exhaust stroke with the cam. The way you have it the 1 and 6 slug should be BDC not tDC. 1 AND 6 slugs are a mirror image (otto cycle). max lift on stock pistons and stock 1.92 valves is .544 at the valve. With 2.02 valve you lose p2v clearance significantly needs to be checked.
Would it even run 180* out? Cause it ran normal for 4 minutes before the valve failure.
I will look again at what you are pointing out to be sure.
What is "1 and 6 slug"? Not familiar with that term
#18
10-15-2014, 02:06 AM
#19
10-15-2014, 06:28 AM
Record Breaker
#20
10-15-2014, 03:05 PM
Cam timing is correct, with rotor pointed at number 1.
To check valve guide clearance, need a dial indicator...... Remove the valve spring, drop the valve down half an inch or so, put dial indicator on valve stem, then wiggle the valve. See how much slop it has. Don't know what the spec is just off hand, but, I bet its in the service manual.
To check valve guide clearance, need a dial indicator...... Remove the valve spring, drop the valve down half an inch or so, put dial indicator on valve stem, then wiggle the valve. See how much slop it has. Don't know what the spec is just off hand, but, I bet its in the service manual.