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Put a clamp on your return line. I have a feeling it's sucking air, and introducing bubbles to your fuel. With a lot of fuel, less problematic. I'd honestly be redoing all the lines in the tank and clamps on everything. Also, you've given two different answers to the same question: Asked if being followed by the police you could get down to use the whole tank, you said yes you could, so long as you keep off boost. However, you then followed this up that free revving, it would also cause the issues. I'm doubting free revving is enough to make any noticeable boost on what is likely a decent sized turbo. So now I have to ask, can you actually drive it lightly and use all the fuel, or does it break up even free revving? Also, have you put a fuel pressure gauge on it? Can you hear the pump change noise at all when you're having this issue? -
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Thanks guys - I have been overseas for a hectic many weeks , so haven't had time to chase any of these up. Some of the suggestions are for 4.1 ratio, which I already have, and a 3.5 at Lonsdale, which is also too tall. Really looking for 3.9 or even a 3.7 LSD, either with M12 bolts. Will look some more.
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By Murray_Calavera · Posted
Yeah sounds like the swirl pot isn't being fed from the return line, would be made even worse by the high flow pump. -
This is the R32 one and the inside of the tank should look like this. which has an internal swirl pot, that the return line must empty into. (Interestingly, because the GTR tank is plastic it misses out on the swirl pot.) That is a potential cause for an aftermarket pump hanger to mess things up. Maybe the return is cut short and squirting over the side.
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