12-03-2007, 12:53 AM
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CC Member
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Join Date: Aug 2001
Location: Melbourne, Australia,
Vic
Cobra Make, Engine: G-Force Mk I, 5L Windsor, TKO 600, enhanced Jag / Koni suspension & LSD Diff.
Posts: 2,303
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Not Ranked
The new pump has run like the old and I wonder if it is in fact fuel heating that is causing the grief.
The supply and return run under the header and up in front to cross over to the engine meeting the standard connection points. Don't know if in an XR8 there is shielding here. Certainly under the headers I have encased both lines in what is called firesleeve as a specific heat retardant barrier.
The one thing that hasn't happened is my return line emptying to the main fuel tank rather than the swirl pot as it is currently plumbed. This would ensure cooling.
What is the usual effect experienced with hot fuel vapourizing in terms of engine operation?
Cheers
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slowy
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