Question on running too rich??
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 3,081
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From: Apex NC
Cruise-In II Veteran
Cruise-In III Veteran
Question on running too rich??
I, and most everyone else who reads this board, know the dangers of running to lean and the dreaded knock retard. I feel I am running too rich. While I know this is robbing me of maybe 10-15 rwhp is slightly rich better than slightly lean? I get black soot deposits in no time in my corsa indy pro-tips, could any of you air/fuel ratio experts tell of the dangers of running too rich? Are there any? Thanks
Safety Car
Joined: Mar 2002
Posts: 3,556
Likes: 2
Re: Question on running too rich?? (AVETTE)
That soot is normal. Check your plugs-that may tell the tale. The best way to go is a few dyno runs and a good tuner. The guys at KPD tuned my buddy for 20 more rear hp/tq-and his fuel curve was already good!
Safety Car
Joined: Sep 2001
Posts: 4,411
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From: Wilmington NC
Re: Question on running too rich?? (AVETTE)
anyone? Dangers of running too rich? Long term?
Drifting
Joined: May 2002
Posts: 1,607
Likes: 1
From: San Francisco CA
Re: Question on running too rich?? (AVETTE)
In extreme cases, running too rich can wash your cylinder walls with fuel, which can cause excessive wear. However, what you describe is typical of most C5’s I’ve seen and no big deal.
When I first started modifying my C5, I installed a Blackwing, larger MAF, and LS6 intake. I continued to have soot on my Corsa’s and when I had the car on the dyno, the A/F ratio was off the chart lean with over 9 degrees of knock retard :eek:
When I first started modifying my C5, I installed a Blackwing, larger MAF, and LS6 intake. I continued to have soot on my Corsa’s and when I had the car on the dyno, the A/F ratio was off the chart lean with over 9 degrees of knock retard :eek:
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
Re: Question on running too rich?? (SFVetteman)
As stated above, extreme will wash lubrication off the cylinder walls. More likely would be carbon build-up and fouled plugs. Factory pre-sets tends toward the rich side as this is the safer of the two.
