What kind of carb are you using? Webers seem to like 3 pounds. Make sure
your fuel system isn't restrictive anywhere but at the float needle. I've
had problems with fuel regulators that didn't flow well enough and fuel
filters that slowed the fill rate of the bowl. You might also look at the
size of your needle seat. At WFO the float bowl fills in spurts, while at
idle it fills at a trickle. Lower pressure/bigger seat might work better, or
vice versa.
-----Original Message-----
From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net] On Behalf
Of Simon Rasmussen
Sent: Tuesday, January 27, 2004 9:39 AM
To: Friends of Triumph
Subject: Fuel pressure
Hope for some off-season advice for my TR4.
I have converted to an electric impeller pump because I was running out of
fuel towards the end of the straights with the original diaphragm pump.
Initially used it without a pressure regulator as it is rated for 41/2 psi,
which I thiught might be ok, but it is impossible to get the mixture correct
for both street and track use; Too rich at low rpm and small throttle
openings, so lean it misfires over 4500rpm at wot. I now have a Holley
regulator adjustable for 1-4psi. Any suggestions for pressure, would 21/2
psi be a good starting point?
Thanks, Simon.
Regards,
Simon Rasmussen
Sales Manager - Telephones To Go
Email: Simon@TelephonesToGo.ca
Mobile: (416) 565-0031
Tel: (416) 650-0000
Fax: (416) 650-5751
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