StuartW Posted March 30, 2010 Share Posted March 30, 2010 Hi, I am runnin a new build on the drag car (See link in sig) With a T74 NON BB The fitting i have is 3mm ID (Smallest restriction, screws into turbo) Comes as part of the oil line kit from MVP. I have a BB turbo on the road supra and it runs a tiny approx 1mm restrictor. I dont want to run too big a bore and damage the turbo seals. Hopefully someone can help? Regards Stu Link to comment Share on other sites More sharing options...
MartinBattye Posted March 30, 2010 Share Posted March 30, 2010 a journal bearing'd turbo requires as much oil as you can throw at it.. the seals are far better on a journal turbo to cope with this. get one made in -4. and ob dont run the restrictor fitting. Link to comment Share on other sites More sharing options...
dude Posted March 30, 2010 Share Posted March 30, 2010 BB turbos run much smaller oil lines than Journal, the one you have sounds fine dude. Link to comment Share on other sites More sharing options...
StuartW Posted March 30, 2010 Author Share Posted March 30, 2010 Nice one guys, Just wanted to be sure. cheers Link to comment Share on other sites More sharing options...
Rinus Posted March 30, 2010 Share Posted March 30, 2010 Jounal beasring turbo's don't need restrictor, if oil pressure is between 3-4bar..(That's what someone from atpturbo says) Anyone know how much oilpressure a single suup will make? I've got the oilfeed of a ballbearing turbo, this will be big enough won't it? Link to comment Share on other sites More sharing options...
dude Posted March 30, 2010 Share Posted March 30, 2010 Jounal beasring turbo's don't need restrictor, if oil pressure is between 3-4bar..(That's what someone from atpturbo says) Anyone know how much oilpressure a single suup will make? I've got the oilfeed of a ballbearing turbo, this will be big enough won't it? what turbo are you running Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 30, 2010 Share Posted March 30, 2010 Jounal beasring turbo's don't need restrictor, if oil pressure is between 3-4bar..(That's what someone from atpturbo says) Anyone know how much oilpressure a single suup will make? I've got the oilfeed of a ballbearing turbo, this will be big enough won't it? Just done a thorough engine rebuild for someone here and with new bearings, a new stock oil pump and rebuilt stock turbos it shows about 100 PSI cold at 3000 RPM and about 70 / 80 PSI hot at 4000 plus RPM. Idles at about 25 PSI hot Link to comment Share on other sites More sharing options...
Rinus Posted March 31, 2010 Share Posted March 31, 2010 I'm building up a Gt4082jb with cast-manifold.. Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 31, 2010 Share Posted March 31, 2010 Shouldn't need a restrictor. Good choice of manifold! Link to comment Share on other sites More sharing options...
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