Do you have more info on your restrictor, or some pics and a a parts list. I want to get this fixed asap so i can finsih breaking the motor in.

 

This is the only pic I can find of the needle valve restrictor I ran on one of my older setups. I changed it back to my original postion coming off the back of the block. Depending on what type of oil feed line you're running will determine what your exact parts list will be.

 

This is one of the easiest ways to making a restrictor,

get your oil fitting, thread the inside of the fitting, get a bolt with a allan wrech head, screw bolt in, drill a 1/16 hole and your HMT restrictor is done.

 

I used to just fill fittings up with brazing rod and drill them with a 55 or 58 drill, 1/16" is typically too big.

Jesse at Turbosdirect, FR's supplier, runs restrictors on GT BB turbos. It depends on what your oil pressure is, some of those things like a max of 15 psi at any time. If you run 75 psi at idle (Jesse's Ecotec) or make massive oil pressure because your engine revs to the moon, you might need a little tweakage.

 

At WOT i make about 85-90psi