FWIW -- I've had occasions when he car seemed down on power that turned out
not to be fuel.
Once, I had my carbs on a borrowed engine. My engine worked fine with the
carbs but not the borrowed one, which would not turn over 5000 rpm. And
that's how I learned to run the carbs dry, no oil in the dashpots. The
borrowed one was built with a little more poop than mine had.
Once it was simply the coil giving out from the underhood heat. Old coil,
too.
Once a bad ignition wire.
All situations where backing off and cruising would get the car around the
track, but I could not push it. Always seemed like fuel. Never was.
Yours might be, or might not.
--Rocky
----- Original Message -----
From: "Walt Hollowell" <walt@hot-tr6.com>
To: <fot@autox.team.net>
Sent: Monday, May 17, 2004 7:40 PM
Subject: out of fuel- I think?
> I could use a little help from some FOT members that drive TR6s with
triple
> Webers.
> In hard street use and SCCA autocross events I have no problems. However,
> this past weekend I was club roadracing
> on our Albuquerque, New Mexico 14 corner 1.65 mile road course. After the
> 4th or 5th lap on full throttle the engine started falling flat as if I
> dropped a couple of cyclinders due to lack of fuel (110 octane racing
gas).
> I had to fall back in the pack and not push too hard (not difficult with
my
> driving skills) or things would just run flat. I suspect I do not have the
> volume of fuel I need for this racing application.
> My engine is putting 155 hp to the ground (just did a chassis dyno last
> week) with a few more ponies to be found with some more tuning. We are
> racing at 5,500 ft. above sea level. I have 10.5:1 compression, ported
> heads, stiffer valve springs, 286 cam, headers and triple Weber 40 DCOE
> carbs. My main jets are 200 air and 115 fuel. Emulsion tubes are F7. Idle
> jets are 55, acelerator jets are 40 and the bleed off is set at zero. I am
> using the cheap electric fuel pump you can get at Pep Boys which has
> performed OK up till now..If it is the higher volume of the two types they
> sell. A fuel pressure gauge shows I am getting between 2.5 and 3 PSI of
fuel
> to the carbs. I am not using the stock mechanical TR6 fuel pump at all.If
my
> problem is in fact not enough volume things now get difficult. Do you
think
> I can just hook up a second (same type) fuel pump in line to increase the
> volume a little or am I going to have to find a high volume, low pressure
> fuel pump with a return line back to the gas tank.
> Has anyone else came across a similar problem?
> Any suggestions?
>
> Thank You
> Walt Hollowell
> Albuquerque, New Mexico
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