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Re: Fuel system questions

To: Susan Kahler <spitfiresuz@141.com>, fot@autox.team.net
Subject: Re: Fuel system questions
From: "Jack W. Drews" <vinttr4@geneseo.net>
Date: Thu, 12 Feb 2004 12:04:28 -0600
Susan, if you have fuel starvation only in the proximity of the corners, it 
is almost always due to one of two things -- either the fuel cell pickup 
location or the carburetor float bowl orientation, and almost never by the 
pump, filter, or regulator location.

You can check the fuel cell possibility by running your car with a 
completely full fuel cell and then running it on a nearly empty cell to see 
how it acts.

What kind of carbs are on your car? If you have Strombergs, let me know and 
I'll go through the litany of things we tried with Strombergs on The TR4 
that never solved the problem.

If you have SU's, look at the float bowls and note the location of the 
pivot for the float. If the pivots of both are on the outside or inside, 
you will have this problem due to the fuel sloshing up the side of the 
chamber and making the floats either close the float valves or open the 
float valves, depending on location of the valves now and the direction of 
the corner.

The fix for this is to oreint the float bowl tops so that one pivot is 
towards the rear and one is towards the front. Do this by just rotating the 
float chamber tops. Sometimes it is awkward because it leaves the fuel 
inlet pointed the wrong way for a tidy routing of the fuel line. There are 
also fixes for that, since there is a big variety of float bowl tops with 
various inlet and vent patterns.

At 07:42 AM 2/12/04 -0600, you wrote:
>Good morning, all!
>
>After this weekend's experience at TWS with some fuel starvation in two 
>corners, Brad and I have some questions to ask.
>
>1) What kind of fuel delivery system are you running?  Single-pump, 
>double-pump, single or multiple pickups?
>
>2) What kind of fuel filter are you running?  High-flow, off-the-shelf 
>standard variety, etc.
>
>3) What type of regulator (if any) are you running?
>
>We are looking for this info for both TR's and Spits!
>
>Thank you so much!
>
>Brad & Susan    :)

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