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Thread: Oil Cooler Questions
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07-17-2005 #1
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- Apr 2003
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The ORB (o-ring boss) fittings are preferred because they have nice tapered bellmouth entries which make for good flow characteristics, whereas a lot of the NPT threaded adpaters have reduced ID's at the threaded portion and aren't as conducive to good flow. Restrictions in the oil plumbing are never a good thing. Try to avoid angled NPT adapter fittings, as they're quite restrictive; use a straight adapter and a curved hose end instead as the hose ends are nice mandrel bent tubes.
-8 seems on the small side to me. On the dry sump and cooler systems I've seen, they always use -12 or -16. Going too big on the plumbing will only hurt your wallet as the cost of the fittings is high. Going smaller on the plumbing may cost you a motor due to poor flow and starvation. I'd run the -12 stuff.
Troy1969 Chevelle
Old setup: Procharged/intercooled/EFI 353 SBC, TKO, ATS/SPC/Global West suspension, C6 brakes & hydroboost.
In progress: LS2, 3.0 Whipple, T56 Magnum, torque arm & watts link, Wilwood Aero6/4 brakes, Mk60 ABS, vaporworx, floater 9" rear, etc.
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