oil restrictor for turbo oil line?

Turbo and Supercharger discussion
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oil restrictor for turbo oil line?

By teal_dx
- Wed Jul 25, 2007 2:40 pm #16853 I have the stainless line with one fitting on each end. one fitting is 45?, the other is straight. Both of them have a larger hole on one end, and a smaller hole on the tapered end.

I've never seen an oil restrictor in person, but I saw a pic online once and the hole was tiny, like the size of a tv cable wire connector.

Here's some pics of what I have:
Image

and the 2 adapter pieces flipped around to the other end:
Image

Do these look like an oil restrictor to you?
If not, what exactly am I looking for when I go to the hardware store? is there any specific size hole that the restrictor should be?
The turbo is a Garret T3 with journal bearings.
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By york62
- Wed Jul 25, 2007 4:14 pm #16879 those dont look like restrictors to me, the thing is at low oil pressure you want the same steady flow of oil to the turbo, so that when your car is under load and your oil pressure is at like 60psi you don't want your turbo to be Crammed with oil all at once- intern blowing seals. This is what you want just to give you and idea... i dont think you can buy them at the hardware store tho.

http://www.atpturbo.com/Merchant2/merch ... y_Code=OIL

hope that helps some!
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By teal_dx
- Thu Jul 26, 2007 4:07 pm #17187 http://www.wicksaircraft.com/catalog/pr ... ede7975089
there's one for cheap, also someone said to check here too: http://www.mcmaster.com/

I'll look through them both and see what I can find :thumb:

I also found this:
http://www.turbobygarrett.com/turbobyga ... s.html#t16
that says a restrictor is not needed for journal bearing Garrett turbos.

I need to do more reasearch....
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By york62
- Thu Jul 26, 2007 5:40 pm #17197
teal_dx wrote:these's this type too:
Image


thats is what i had for my setup
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By stefan
- Thu Jul 26, 2007 11:56 pm #17309
teal_dx wrote:...
I also found this:
http://www.turbobygarrett.com/turbobyga ... s.html#t16
that says a restrictor is not needed for journal bearing Garrett turbos.

I need to do more reasearch....


Quote from the site;
"... an oil restrictor is generally not needed for a journal-bearing turbocharger except for those applications with oil-pressure-induced seal leakage. ..."
Generally, oil pressure induced seal leakages occur on a turboed Honda.
You have to use an oil restrictor to be sure your turbo will live longer than a week.

Another quote;
"... address all other potential causes of leakage first (e.g., inadequate/improper oil drain out of the turbocharger, excessive crankcase pressure, turbocharger past its useful service life, etc.) and use a restrictor as a last resort. ..."
This is also a thing to look into, make sure you have the proper sized oil drain, and that it runs in a perfect line to the oilpan.
Also a breathercan with two connections on it is to be placed; crankcase, and valvecover, with a breatherfilter on top (*)
This helps to control oil pressure, but you still need a restrictor.

It's a good question btw, things that appear this small can have major effects on your turbochargers lifespan.
I can't wait till I have the money myself to install a full custom kit, it's always a real challenge to get it running properly :)

(*) = you can make this yourself really really simple ;)
Buy yourself a soap dispenser like this;
Image
Drill two holes in the side about an inch between each other, and an inch from the top.
Mount an oilline fitting in each of them.
Then get the cap of, and replace the top thingy with a breatherfilter.
This way you can get the cap of and drain the oil ;)
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By york62
- Tue Jul 31, 2007 1:25 am #17963 haha sweet deal!!
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