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The Terminator
Turbo Cobras
Smoke when letting off throttle?
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<blockquote data-quote="04Ryan" data-source="post: 9440349" data-attributes="member: 97680"><p>A .040" restrictor is good for a ball bearing turbo...but most people use a .065" on a journal bearing turbo. I've always used restrictors until my last turbo setup...and guess what? Blew the seal out of the turbo...these mod motors make a ton of oil pressure. My car idles at 75psi and anything over 2k rpm's she hits 100psi and then the internal bleed opens on the oil pump holding her steady at 100psi. Run the proper size restrictor for your particular setup and you won't have a problem. And yes drain line sizing and routing is VERY important. But your problems sound exactly like mine when the seal went on my turbo. First it was smoke on deccel...then it was under full boost.</p></blockquote><p></p>
[QUOTE="04Ryan, post: 9440349, member: 97680"] A .040" restrictor is good for a ball bearing turbo...but most people use a .065" on a journal bearing turbo. I've always used restrictors until my last turbo setup...and guess what? Blew the seal out of the turbo...these mod motors make a ton of oil pressure. My car idles at 75psi and anything over 2k rpm's she hits 100psi and then the internal bleed opens on the oil pump holding her steady at 100psi. Run the proper size restrictor for your particular setup and you won't have a problem. And yes drain line sizing and routing is VERY important. But your problems sound exactly like mine when the seal went on my turbo. First it was smoke on deccel...then it was under full boost. [/QUOTE]
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Smoke when letting off throttle?
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