gt28rs oil restrictor

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pacman537

NKOTB
does anybody know of a store/shop around miami that sells .035 oil restrictor fittings for the garret gt28 disco potato turbo?

i just had to park my 240 cause of oil leaking from the ex turbine,and i found out that the restrictor is to prevent that from happening.

also if anybody got one laying around that wants to get rid of lmk
 
why not to use a oil restrictor on your Garrett ball bearing turbo

I've been using the ball bearings only(R and RS series)for about 10 years. I distribute Garrett. The man that invented the dual ball bearing turbo for Garrett is John Craig at Limit Engineering. The oil restrictor issue has become a hot topic over the years. John says that unless you are constantly at more the 65psi of oil pressure You do not need a restrictor. I've run these turbos on many different kinds of engines and NEVER blew out the seals. If oil is getting into the turbine housing you back seal is done. The restrictor will not solve your problem. Perhaps the turbo did not have proper water cooling. You cannot run ball bearings without water they WILL break. Normally, if you have too much oil pressure it blows out the front seal before the back seal. Garrett is very reasonable on the cartridge pricing. Come by the shop with your turbo or car or both and I will tell you whats really wrong with it for free. Maybe the back seal isn't blown out yet, and you won't have to buy a cartridge.
 
Why take a risk? Its cheap and easy, get a restrictor.

TurboByGarrett.com - FAQ's said:
Ball-bearing turbochargers can benefit from the addition of an oil restrictor, as most engines deliver more pressure than a ball bearing turbo requires. The benefit is seen in improved boost response due to less windage of oil in the bearing. In addition, lower oil flow further reduces the risk of oil leakage compared to journal-bearing turbochargers. Oil pressure entering a ball-bearing turbocharger needs to be between 40 psi and 45 psi at the maximum engine operating speed. For many common passenger vehicle engines, this generally translates into a restrictor with a minimum of 0.040" diameter orifice upstream of the oil inlet on the turbocharger center section. Again, it is imperative that the restrictor be sized according to the oil pressure characteristics of the engine to which the turbo is attached. Always verify that the appropriate oil pressure is reaching the turbo.

The use of an oil restrictor can (but not always) help ensure that you have the proper oil flow/pressure entering the turbocharger, as well as extract the maximum performance.
Click to expand...
 
John Craig INVENTED this turbo he told me that the restrictors often break them and you don't need it. The restrictor clogs easily if you choose to run one make sure it doesn't get gunked up it happens quickly on turbo cars. But do what you want....
 
many ppl have blown the seals because of too much oil in the bearings,specially the back one thats where it tends to leak the most,i got an sr20 but i dont know if water is cooling the turbo thou, dont know how that works.

dam i dont get none of those fitting measures.

booslab do you at your shop hold these fitings n stuff?
 
boostlab said:
John Craig INVENTED this turbo he told me that the restrictors often break them and you don't need it. The restrictor clogs easily if you choose to run one make sure it doesn't get gunked up it happens quickly on turbo cars. But do what you want....
Click to expand...

No one person invented the dual bb design. Either way, its on the Garrett website that there are advantages to running one and there is a team of very capable engineers behind all of those statements I'm sure.
 
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