I made best power when the car ran slightly "rich", a bit richer than
stoichiometric ie 13:1. I ended up with best power closer to
12.5:1. So, some of the high EGT is due to fuel still burning when
the exhaust port opens.
The A/F meter was at the dyno, I don't have one in my car. The
leaded gas kills the A/F pickup. I bought a new one for the dyno
session and we killed it by the end of the testing.
Tony Drews
At 10:38 AM 5/23/2013, Bill Tobin wrote:
>Tony, what kind of A/F ratio setup do you use? And what ratio do you
>shoot for?
>Thanks, Bill
>----- Original Message ----- From: "Tony Drews" <tony@tonydrews.com>
>To: <toodamnfunky@comcast.net>; "Scott Janzen" <sjanzen@me.com>
>Cc: "fot" <fot@autox.team.net>
>Sent: Thursday, May 23, 2013 10:30 AM
>Subject: Re: [Fot] EGT's again... the averages
>
>
>>By the way, my carb jetting was determined on an engine Dyno, and
>>included the use of an air/fuel ratio gauge. So, I just noted the
>>EGT's produced at that time as "baseline".
>>
>>Tony Drews
>>
>>At 09:19 AM 5/23/2013, toodamnfunky@comcast.net wrote:
>>>Thanks guys for the input.
>>>
>>>We see probes mounted anywhere from 1.75 " to 6" from the flange
>>>
>>>and EGT's from 1300 to 1400. So it's an average of 3.9" from the flange and
>>>1362F for EGT's.
>>>
>>>Very helpful,
>>>
>>>Jim G.
>>>
>>>
>>>
>>>----- Original Message -----
>>>
>>>
>>>From: "Scott Janzen" <sjanzen@me.com>
>>>To: "fot" <fot@autox.team.net>
>>>Sent: Thursday, May 23, 2013 6:42:37 AM
>>>Subject: Re: [Fot] EGT's again
>>>
>>>2" from the head. B 1300 degrees on the GT6 at 7000 RPM, 32
>>>degrees advance.
>>>Tailpipe is tan/grey, leaded 110, forged Venolia pistons, 12:1 compression
>>>I suspect I could lean it out a bit - need some dyne time with the webers to
>>>determine.
>>_______________________________________________
>>fot@autox.team.net
>>
>>http://www.fot-racing.com
>>
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