Timing
Thread Starter
5th Gear
Joined: Jul 2010
Posts: 5
Likes: 0
Timing
I have a 66 327/300. Completely rebuilt. It will only start with the timing way advanced. If I start it and back off the total timing to about 34 degrees at 2800 rpm it runs great. But if I shut it down and try to restart it won't. It spits gas back up out of the carb. It will restart if I advance the timing. Help please. It has a Crane electronic ignition and Accell wires.
Le Mans Master
Joined: Nov 2000
Posts: 7,246
Likes: 21
From: Going too fast over the hill. Iowa
try setting it 8° BTC at idle with the vacuum advance disconnected. Then check the total mechanical advance: tell us what rpm it is completely advanced and how many total degrees it went to full advance.
I assume you are using a vacuum advance, your mecnanical advance weights are clean, and you have a bushing on the vacuum advance rod to remove any play in the connection to the breaker plate.
I assume you are using a vacuum advance, your mecnanical advance weights are clean, and you have a bushing on the vacuum advance rod to remove any play in the connection to the breaker plate.
Last edited by magicv8; Oct 4, 2010 at 03:27 PM.
Race Director
Joined: Feb 2000
Posts: 11,888
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From: Olustee Florida
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
That's quite rare - it takes 1,000 ft-lbs applied to the outer ring while the hub is held solid to "slip" the elastomer bond to either the hub or the inertia ring.
Easy enough to check - the timing index line on the inertia ring should be aligned exactly with the keyway in the hub and the pulley bolt hole just outboard of the keyway.
Easy enough to check - the timing index line on the inertia ring should be aligned exactly with the keyway in the hub and the pulley bolt hole just outboard of the keyway.
Drifting
Joined: Dec 2002
Posts: 1,946
Likes: 28
From: Long Beach CA
Is this the initial start-up after the full rebuild? Or has the engine been running before but now it isn't? If it has been running, was there any other work done just before it developed this weird symptom?
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Safety Car
Joined: Feb 2003
Posts: 4,068
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From: St. Joseph Mo
That's quite rare - it takes 1,000 ft-lbs applied to the outer ring while the hub is held solid to "slip" the elastomer bond to either the hub or the inertia ring.
Easy enough to check - the timing index line on the inertia ring should be aligned exactly with the keyway in the hub and the pulley bolt hole just outboard of the keyway.
Easy enough to check - the timing index line on the inertia ring should be aligned exactly with the keyway in the hub and the pulley bolt hole just outboard of the keyway.
I've had two go south on me. My '57 Desoto in my truck slipped back against the timing gear housing and the one on my '66 Corvair spit the rubber in my face while I was blipping the throttle.
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
I have a 66 327/300. Completely rebuilt. It will only start with the timing way advanced. If I start it and back off the total timing to about 34 degrees at 2800 rpm it runs great. But if I shut it down and try to restart it won't. It spits gas back up out of the carb. It will restart if I advance the timing. Help please. It has a Crane electronic ignition and Accell wires.
If the timing is close enough to start good, it should run decent and vice/versa and not spit back through the carb.
Make sure you don't have some plug wires crossed. Valves aren't too tight? Timing gears aligned properly?
I might suspect that electronic ignition if I knew anything about them.
If it's none of the above, I'd start with finding TDC on the piston stroke and go from there.
