Engine After Run
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Joined: Nov 2001
Posts: 73
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From: Snellville GA
Engine After Run
I am fighting 11-1 compression ratio and pump gas. I am having trouble with
engine after run. Is this a problem related to my comression ratio / fuel or am
I looking at another problem? Inital timing is at 8. 270H cam on a 383.
Need sugestions.
Blake
engine after run. Is this a problem related to my comression ratio / fuel or am
I looking at another problem? Inital timing is at 8. 270H cam on a 383.
Need sugestions.
Blake
Racer
Joined: May 2001
Posts: 401
Likes: 0
From: Carlsbad CA
Re: Engine After Run (Blake-73)
Unless you get some really high octane pump gas, my guess is that your compression ratio is too high for pump gas, which can cause run-on. I'm sure others will get more technical/specific about octane and compression.
Good luck.
Good luck.
Melting Slicks
Joined: Oct 2001
Posts: 2,062
Likes: 1,361
From: Halifax, Nova Scotia, Canada
Re: Engine After Run (Blake-73)
Hi Blake...
I have a 11:1 engine. I've had after run problems for 31 years.
Even in the days of "good" gas, all brands were not equal.
Check what the others have suggested first.
Since I have a 4-speed, as you shut off the engine, let out
the clutch enough to put a very slight drag on the engine.
It will stop like a stone.
If you have an automatic, try shutting engine off in drive.
I've screwed around with this for years. Too many variables.
Octane ratings vary.
Temperature of engine.
Carbon build up in engine.
Engine idle speed.
I just got used to doing the procedure described above.
Barry
I have a 11:1 engine. I've had after run problems for 31 years.
Even in the days of "good" gas, all brands were not equal.
Check what the others have suggested first.
Since I have a 4-speed, as you shut off the engine, let out
the clutch enough to put a very slight drag on the engine.
It will stop like a stone.
If you have an automatic, try shutting engine off in drive.
I've screwed around with this for years. Too many variables.
Octane ratings vary.
Temperature of engine.
Carbon build up in engine.
Engine idle speed.
I just got used to doing the procedure described above.
Barry
