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The Terminator
Engine/Tuning
KB E85 Cobra fuel issue breaking up. Return system
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<blockquote data-quote="Juiced46" data-source="post: 15606587" data-attributes="member: 11519"><p>I have seen this before. The Lethal hat with 465s does not fit very well without modifications. The pumps are probably sitting too far down in the hat. You will need to trim the rubber line on the hat where the pump slides in and trim part of the nipple on the pumps as well to get them in further. You need to measure the depth carefully to make sure you have proper clearance.</p><p></p><p>What also sometimes happens is, when you remove the tank, people use a jack in the center, it slightly bends the tank up causing that clearance gap to be less.</p><p></p><p>The pumps are probably sucking right off of the bottom of the tank, it is being sucked dry in the sump because they are too close to the bottom of the tank. Your base pressure should be set to around 38-40psi with the vac line off the regulator. With boost, since its 1 to 1, you should be seeing +24psi when WOT so around 65psi or so.</p><p></p><p>Also how is your fuel system configured? Is it dead headed or are you feeding the rails first?</p></blockquote><p></p>
[QUOTE="Juiced46, post: 15606587, member: 11519"] I have seen this before. The Lethal hat with 465s does not fit very well without modifications. The pumps are probably sitting too far down in the hat. You will need to trim the rubber line on the hat where the pump slides in and trim part of the nipple on the pumps as well to get them in further. You need to measure the depth carefully to make sure you have proper clearance. What also sometimes happens is, when you remove the tank, people use a jack in the center, it slightly bends the tank up causing that clearance gap to be less. The pumps are probably sucking right off of the bottom of the tank, it is being sucked dry in the sump because they are too close to the bottom of the tank. Your base pressure should be set to around 38-40psi with the vac line off the regulator. With boost, since its 1 to 1, you should be seeing +24psi when WOT so around 65psi or so. Also how is your fuel system configured? Is it dead headed or are you feeding the rails first? [/QUOTE]
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KB E85 Cobra fuel issue breaking up. Return system
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