Re: Timing chain slip
[Re: dnd0001]
#1477390
08/03/13 09:37 AM
08/03/13 09:37 AM
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Joined: Aug 2010
Posts: 343 S.E.Mich
drew72
enthusiast
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enthusiast
Joined: Aug 2010
Posts: 343
S.E.Mich
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Quote:
I do appreciate all the help. I'm learning as I go. I know enough to be dangerous. Little hard to do everything by my self.
But at TDC the dizzy cap is pointing at #6 spark plug hole. When I turn the dampener, I can turn it about 5-8 degrees before the rotor moves.
Next this morning I will pull the fuel pump and stick the camera in and see what I can see. In order to see the marks at 6 and 12 should I be at TDC on #1 or #6?
You're at #6 when the dots are at 6&12
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Re: Timing chain slip
[Re: RapidRobert]
#1477398
08/03/13 02:23 PM
08/03/13 02:23 PM
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Joined: Dec 2007
Posts: 88 Minnesota, USA
dnd0001
OP
member
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OP
member
Joined: Dec 2007
Posts: 88
Minnesota, USA
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The #6 and #1 is confusing me. I won't back to TDC on #1 compression stroke. After feeling the timing chain about 5 more times, I would say I can push it in about 1/8 or a little more. I can't pull the chain off the top of the cam sprocket, only on the side which I assume is normal.
Turning it clockwise from 40 I now is at 16 degrees before TDC on the dampener. I loosened the distributor hold down. Turned the distributor head until #1 wire was lined up with the rotor cap. The reluctor paddle is in the magnet on the opposite side. Is that all correct?
It started and kept running. The timing at idle is showing 20 degrees. I did change back the springs on the msd distributor to make sure the advance wasn't kicking in. I had it set to kick in at 800 RPMs. Maybe that was the problem when I was getting the 40-50 range along with to must advance?
If I set it for 16 shouldn't re reading 16 on the dampener instead of 20?
Last edited by dnd0001; 08/03/13 03:15 PM.
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Re: Timing chain slip
[Re: dnd0001]
#1477399
08/03/13 07:30 PM
08/03/13 07:30 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I should have put in my post to: from TDC #1 compression back the crank up (CCW) slightly to 20 then come forward (CW) to 16 (takes the slack out of the chain) then line the magnet up with the tooth that places the rotor under or near under the #1 cap rotor which you ended up doing . regarding it showing 20 with the light, it fires when the tooth JUST moves away from the magnet which if anything would retard it a bit from 16 (maybe to 15) going from the static setting to what the timing light shows rather than advancing it (& you have 20). I'm assuming the vac adv line to the carb is on ported (no vac adv at idle) & that the weights ain't advancing at idle. Just set the timing at 16 as that was what it was at before & it ran OK. The problem now is that unless something was loose in the dist that is has been rectified with what you have done then the cause of why it died still ain't been addressed yet (I'm hoping it has) as we know now that the dampener and the tchain were OK & we have only tinkered with the dizzy.
live every 24 hour block of time like it's your last day on earth
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Re: Timing chain slip
[Re: dnd0001]
#1477402
08/03/13 10:39 PM
08/03/13 10:39 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Oh I had erroneously assumed that it was running OK now. You know the chain may be slipped. You did the timing correct: Put the slit on TDC on the tab with the #1 cyl on compression then backing it CCW slightly to 20 then forward to 16 then turning the housing till the rotor is under or nearly under the cap terminal with the #1 plug wire AND at that same place the magnet is dead even with the tooth. From our hillbilly test on the dampener it sounds OK (not slipped) & that leaves jumped chain (which I still doubt for some reason) mainly I think cuz this happened at a steady cruise (if I read that right) or an ign malfunction in the Might Sputter & Die system
live every 24 hour block of time like it's your last day on earth
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