T74 Oil feed size on Turbo?

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

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.

BB turbos run much smaller oil lines than Journal, the one you have sounds fine dude.

Nice one guys, Just wanted to be sure. cheers

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?

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

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

I'm building up a Gt4082jb with cast-manifold..

Shouldn't need a restrictor. Good choice of manifold!