88 timing off 2-Teeth
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Race Car
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From: Tampa Florida
88 timing off 2-Teeth
Restoring an 88 from 10 years of hibernation got it running but hearing a metal to metal knock seems like its coming from the water pump area.
What I did find is both cams two teeth off ahead how much does this relate in timing and how far is too far?
What I did find is both cams two teeth off ahead how much does this relate in timing and how far is too far?
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From: Southern Alberta, Canada
thats quite far off.
The timing is typically 3 teeth off (retarded) with the crank at 45 BTDC...........your 2 teeth advanced so 30 degrees?
The timing is typically 3 teeth off (retarded) with the crank at 45 BTDC...........your 2 teeth advanced so 30 degrees?
Last edited by the flyin' scotsman; Apr 3, 2013 at 05:47 PM.
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From: K-town, Germany
Maybe just an accident and didn't have it at TDC when changing the belt (crappy fly-wheel lock?) and didn't spin it around a couple times after changing the belt to make sure everything lined up.
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If the belt is loose enough to jump from that point, the slack in the rest of the belt system would be way worse. I've not seen a lower roller yet that has ever made contact with the belt and there have been some real loose ones out there.
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Thread Starter
Race Car
Joined: Dec 2006
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From: Tampa Florida
Setting the crank to 45 now moves the timing marks where the 0 should be in this postion.
If I remove the belt if a cam slips would it hit the valves?
Should I set crank TDC and reset cams to 0 before doing anything else?
If I remove the belt if a cam slips would it hit the valves?
Should I set crank TDC and reset cams to 0 before doing anything else?
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From: Southern Alberta, Canada
with the crank set and locked at 45 BTDC both banks of cams can be turned freely with fear of valves hitting pistons. You then need to position the cam gear timing mark 3 positions retarded, restring the belt, tention, spin the engine clockwise 2 times to come back to 0 TDC and recheck timing.
If I were you I would throw on a new Gates belt.
pic from Dwaynes epic:
If I were you I would throw on a new Gates belt.
pic from Dwaynes epic:
Last edited by the flyin' scotsman; Apr 4, 2013 at 06:33 PM.
Drifting
Joined: May 2004
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From: Rochester, NY
Is it me or is that red pointer upside down? Not sure if the pointer is centered on the holes it mounts to?
Edit, looking back at my TB job i just finished, flip the pointer and see where it is......
Edit, looking back at my TB job i just finished, flip the pointer and see where it is......
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From: Rep of Texas, N NM, Rockies, SoCal
Given the direction of rotation is CW as viewed looking backward, a jump would lag the timing components - right? I believe this show the timing has 'leaped'. Don't think that's possible, given the mech drag.
