[Fot] AFR vs EGT = brain damage

[Jim]

Jim,

Get a video camera (or digital cam w/ video) and aim it at the gauges.  And
try to remember what you were doing at that point on the course.

I do remember looking at my gauges shortly before # 1 piston melted.  Wish
I'd looked more often.  And understood what they'd told me.  It was all
Smiths at the time so nothing fancy... Just should have taken note of 190+
water temps and shut down sooner.


Cheers,

Jim
Dallas 

-----Original Message-----
From: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] On
Behalf Of Jim Gray
Sent: Wednesday, July 29, 2009 8:38 PM
To: 'Tony Drews'
Cc: Friends of triumph
Subject: Re: [Fot] AFR vs EGT = brain damage

Now see, this is why I like hangin out with you guys.
Look at all the cool stuff you can learn.
Now I not only need an AFR but an EGT as well now that I know how to use em.
All I need next is a flight engineer to watch em all. Or maybe a data
logger..that's the ticket!....I can get suspension telemetry too
......please somebody stop me!
Great feedback, thanks
Jg



-----Original Message-----
From: Tony Drews [mailto:tony at tonydrews.com] 
Sent: Wednesday, July 29, 2009 7:05 PM
To: toodamnfunky at comcast.net; fot
Subject: Re: [Fot] AFR vs EGT = brain damage

AFR and EGT in my mind are for different purposes.  The EGT is a 
quick check that I'm not going to send aluminum out the exhaust, and 
when the car runs like crap it, along with my fuel pressure gauge, 
give me something to help diagnose the problem.

Fuel pressure = 0 and EGT's go up and then drop means I forgot to put 
gas in the fuel cell again.  One EGT lower than the other - front 
carb or rear carb problem.  Good fuel pressure and egt's go to zero - 
I just lost spark.  Etc.

I've used the AFR on the dyno to get the carbs right across the 
entire rev range.  Made a ton of difference in power.  Also killed 
the new sensor over the course of the dyno session - it was a 
standard single wire one from the Napa store....  Wasn't terribly expensive.

- Tony
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