What Oil Restrictor do I need?

[Cammaxon]

What Oil Restrictor do I need?
20g TD05 standard journal mitsu turbo. bango lines from oil filter housing.
Oil pressure is 110psi first 35 seconds of idle.
oil pressure is 120+psi WOT 25psi of boost 351whp @db.

Note* my oil pressure sending unit is on my oil filter housing (exactly where i unscrewed the stock one, and screwed this one in)

Julien RE-RE built my turbo.
One of the Snap rings in the center-section was bent.
He replaced the ring, Exhaust wheel and bearings. He said the compressor housing seal was bad, but then changed his mind and said it was good. I'm not sure if there was any thing wrong or if it was good because he didn't have a spare seal.

He said the reason it went bad is because I have a 7bolt (2g) head on a 6 bolt block. He said the head has smaller oil ports causing the pressure at the turbo to be way toooo high. He said the oil pressure at start up shouldnt ever be more than 45 psi, even at WOT.

Can i get some clarification? and Perspective? i like that too. A mental view, a vista, an outlook?

I'm sorry i didn't get any good pics of it taken apart but i took pics so i might as well upload them

http://i304.photobucket.com/albums/nn172/cammaxon/turbo6.jpg

http://i304.photobucket.com/albums/nn172/cammaxon/turbo5.jpg

http://i304.photobucket.com/albums/nn172/cammaxon/turbo4.jpg

http://i304.photobucket.com/albums/nn172/cammaxon/turbo3.jpg

http://i304.photobucket.com/albums/nn172/cammaxon/turbo2.jpg

http://i304.photobucket.com/albums/nn172/cammaxon/turbo1.jpg

[blackrosenova400]

First off take a picture of the inlet of where the oil feed is on the turbo, before you take the pic remove any fittings that are on the feed.

Second, how big is the feed line you were running to the turbo? 4an? If it is with no restrictor, that is indeed why you just flooded the living crap out of the turbo, the seal is junk. You were probalby feeding it 10 times more oil than it could handle.

Post up a pic of the oil feed inlet of the turbo (with no fittings) so we can get a good idea of how much oil it was getting.

[cudvig]

Show us a picture of the compressor seal you think was bad.

Around 100 is normal during start up. Don't get stupid or rev the crap out of your motor before it warms up. It should settle down to 10 plus after it warm is fine. Do you have BS removed?

I'm pretty sure the rule of thumb for normal oil pressure is 10psi per 1000 RPM.

The exhaust side looks ok because it looks dry. But I am not sure of the compressor side. How long was the car run for?

-Colin

[Cammaxon]

It was run for about 10 minutes. The turbo is all back together but not installed on the car. i'll try to take some pics later tonight if i can. i have class till 9pm.

[goodhart]

He said the reason it went bad is because I have a 7bolt (2g) head on a 6 bolt block. He said the head has smaller oil ports causing the pressure at the turbo to be way toooo high. He said the oil pressure at start up shouldnt ever be more than 45 psi, even at WOT.



That is just a flat out fucking lie. No way in hell that would make a turbo go bad. No way. There are plenty of people using that combo, it is about the best combo you can have btw, and making good reliable power without shitting turbos every 200 miles.

[scheides]

Maybe just put a new MHI turbo on there and be done with it. Screwing around with these rebuilds just turns into an absolute mess, I'm not impressed with them at all.

MHI Evo3 16g or an FP HTA68, brand new, nothing else. You're past the point of trying to save a few bucks.

[Kracka]

A journal bearing 20G doesn't need an oil restrictor. Oil pressure from the port on the head is much lower than engine oil pressure.

Oil pressure is temp and RPM based, it has nothing to do with load so please don't list an oil pressure for WOT. 100+ psi at idle with a cold engine is perfectly normal. Once the engine is fully warmed up oil pressure should be between 5-20 psi at idle. At 3k RPM (once fully warmed) oil pressure is generally 60-80psi.

[Kracka]

Maybe just put a new MHI turbo on there and be done with it. Screwing around with these rebuilds just turns into an absolute mess, I'm not impressed with them at all.
Agreed!

[goodhart]

I also say feed this thing from the head, where you won't see such high pressures. Many people are using the head with success with journal bearing turbos, it gets plenty of oil, whether the turbo is big or small.

[niterydr]

Switch the feet to the head port and you should be in good shape.