First Track Day Coming & Panhard Bar Tuning - Page 3 - Vintage Mustang Forums
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post #31 of 36 (permalink) Old 09-04-2019, 09:36 AM
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This looks awesome.

Is your gas tank baffled? Have the same issue on a 750 DP in hard corners.. engine sputters, car settles, and then comes alive again. Only happens on less than 1/2 a tank, so I figure itís starvation at the tank..


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'68 Mustang
347ci that has a lot of neat stuff in it
T5 manual trans, alum driveshaft, 9" w/3.70 gears
Suspension parts from SoT, Global West, Maier Racing, and a few others. Works for me!
TCP manual rack (love it)
EPAS (Love this the most)
VWW V45 wheels (like these too)
SoT 13" brakes (stopping is good)
And I finally got a paint job!
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post #32 of 36 (permalink) Old 09-04-2019, 05:03 PM Thread Starter
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Originally Posted by blueovalfan68 View Post
This looks awesome.

Is your gas tank baffled? Have the same issue on a 750 DP in hard corners.. engine sputters, car settles, and then comes alive again. Only happens on less than 1/2 a tank, so I figure it’s starvation at the tank..
So in the morning my gas tank level got below a 1/4 tank and I definitely started to notice fuel starvation issues. I refilled my tank for the afternoon sessions and as I got faster I started to notice a slightly different and more immediate starvation during cornering, and I still had over half a tank by days end. I've never whipped my Mustang around corners with my foot on the gas pedal as hard as I did that track day, and I haven't experienced it on the street even while taking on/off ramps at a moderate pace, so I'm guessing the carb and/or fuel pump need some poking.
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post #33 of 36 (permalink) Old 09-04-2019, 06:11 PM
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Pay attention to what type of corners you are having problems, is it all corners, or only longer corners with sustained G forces ? These are the type that typically cause fuel pickup issues. Did it do it at all with a completely full tank ? I'd hate to see you waste time and money on the carb./fuel pump if they're not the problem.

'65 A-code coupe, T-10 4-speed, 8" 3.25 limited slip
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post #34 of 36 (permalink) Old 09-04-2019, 07:22 PM Thread Starter
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Originally Posted by stephen_wilson View Post
Pay attention to what type of corners you are having problems, is it all corners, or only longer corners with sustained G forces ? These are the type that typically cause fuel pickup issues. Did it do it at all with a completely full tank ? I'd hate to see you waste time and money on the carb./fuel pump if they're not the problem.
With the tank nearly full it did it on both long 180 degree turns (it would start the sputter before I even finished the turn) and short less than 90 degree turns. And now that I think about it, I don’t think it did it on left handers, only on right turns... hmmm

And I already have a mechanical Holley fuel pump that I installed years ago to fix a fuel starvation issue at the drag strip, and I haven’t had any issues with fuel delivery till now.
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post #35 of 36 (permalink) Old 09-10-2019, 03:58 PM
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I had an Edelbrock on my car - when I went to race tires, I started getting fuel starvation issues in the Carousel at Sears Point. Went to a Holley and have never had that problem again (although I do have to keep plenty of gas in the stock tank, otherwise I get the same issue you probably have: all the gas climbs up one side of the tank!
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post #36 of 36 (permalink) Old 09-11-2019, 08:25 AM Thread Starter
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I had an Edelbrock on my car - when I went to race tires, I started getting fuel starvation issues in the Carousel at Sears Point. Went to a Holley and have never had that problem again (although I do have to keep plenty of gas in the stock tank, otherwise I get the same issue you probably have: all the gas climbs up one side of the tank!
I kinda want to avoid swapping carbs at this point. I did read on a few other forums that increasing the float bowl fuel level would help. I moved my floats up about 3/32 higher than stock but haven’t had a chance to test it out in a corner yet. I’ll post an update when I do.

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