SHOULD i bump up the timing?
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From: Cary,IL,US
SHOULD i bump up the timing?
hey, my lg4 has 0 degree timing and i thought that is kinda low. i have put a full exuast from headers to the cat back and i think i should bump it up to get more performance. how much should i bump it up and how can i do it on a computer controlled carb/distro. thanx guys
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86 IROC LG4,DUAL SNORKEL,AMERICAN THUNDER,3.27 GEARS
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86 IROC LG4,DUAL SNORKEL,AMERICAN THUNDER,3.27 GEARS
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IROC,
You should easily be able to get away with 6-8° BTDC with the right fuel. Since we're getting ethanol in the mix, a little advance should be acceptable without causing detonation.
Your ECM shouldn't have a problem with advanced base timing, since there isn't a crankshaft position sensor on your car. The only thing that will affect the ECM's control over the timing is the knock sensor input.
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Later,
Vader
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"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0
You should easily be able to get away with 6-8° BTDC with the right fuel. Since we're getting ethanol in the mix, a little advance should be acceptable without causing detonation.
Your ECM shouldn't have a problem with advanced base timing, since there isn't a crankshaft position sensor on your car. The only thing that will affect the ECM's control over the timing is the knock sensor input.
------------------
Later,
Vader
------------------
"No matter how hard you try you can't stop us now"
Adobe Acrobat Reader 4.0
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Joined: Oct 2000
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Turn it Counter Clockwise To advance
You should hear the Idle Go Up
It dosent take much movement To change he timing alot, What I do is losen the Retaining Bolt and THen Hit that little block On the side of the Dist where the Tach plugs In with a wrench, only loosen it a little so You can just barely move it Or else when you try to tighten it, you can Bump it back very easily.
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85 Z28 - Daily Driver
60 Ranchero - Project ( Money Hole )
You should hear the Idle Go Up
It dosent take much movement To change he timing alot, What I do is losen the Retaining Bolt and THen Hit that little block On the side of the Dist where the Tach plugs In with a wrench, only loosen it a little so You can just barely move it Or else when you try to tighten it, you can Bump it back very easily.
------------------
85 Z28 - Daily Driver
60 Ranchero - Project ( Money Hole )
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