Does cam overlap affect a/f ratio?
Thread Starter
Trial User
Joined: May 2000
Posts: 109
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From: Alfred, ME, USA
Does cam overlap affect a/f ratio?
Here's the setup
'95 GSR
CTR cams (+4 intake, -1 exhaust)
I/H/E, Random cat., Field, stock fp, stock injectors.
I'm tuning according to my a/f meter and plugs. Right now, using a Field, I am leaning out the settings across the whole range to get the desired A/F ratio(up to 10% at high RPMs). Does that seem right, or do I have too much overlap and am flowing the mixture straight through the cylinder, leaving the cylinder lean, and the exhaust rich? Is there a formula to determine maximum overlap? I'm blowing a lot of carbon out the exhaust too.
'95 GSR
CTR cams (+4 intake, -1 exhaust)
I/H/E, Random cat., Field, stock fp, stock injectors.
I'm tuning according to my a/f meter and plugs. Right now, using a Field, I am leaning out the settings across the whole range to get the desired A/F ratio(up to 10% at high RPMs). Does that seem right, or do I have too much overlap and am flowing the mixture straight through the cylinder, leaving the cylinder lean, and the exhaust rich? Is there a formula to determine maximum overlap? I'm blowing a lot of carbon out the exhaust too.
Honda-Tech Member
Joined: Sep 2000
Posts: 5,276
Likes: 0
From: Sears Point, CA
Re: Does cam overlap affect a/f ratio? (vtec2nr)
Anything that affects:
air entering
air exiting
fuel entering
fuel exiting
spark intensity
Will have an affect on your A/F ratio...some more than others.
air entering
air exiting
fuel entering
fuel exiting
spark intensity
Will have an affect on your A/F ratio...some more than others.
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ndlyng
All Motor / Naturally Aspirated
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Dec 5, 2005 05:43 PM
