Gt35 Oil Restrictor Help Arghhhhh

[jet2nv]

Hey guys ive been getting mixed answers from alot of people can someone help

i have a rb30det and a brand new garrett gt3540 now for the oil feed fitting should i run a restrictor style fitting or just a normal type ive spoken to mtq he said you can run either depending on oil pressure and my good mate STAO from hypergear said i should use a normal fitting and the restricted one will cause my turbo to die

can someone please let me know im goin crazy i have a -4an braided oil feed line

both are inverted flare type ONE WITH THE restriction is a banjo type and the non restriction is a normal turbo to -4an please help guys cheers

as for oil pressure i have no idea as the motor is not it yet and only have a rb25det oil pump

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[zebra]

The turbo should have a restrictor fitted from the factory

[jet2nv]

yeah they do as most garretts do but ive been advised from ATP in usa to use a ristrictor and mtq but then i have stao tellin me it will blow the turbo saying that i had a gt3071 on my rb25 with a normal fitting and front and rear seals went on that so i dont really want to risk a $1500 brand new turbo

has anyone here had experience with out with the restriction fitting

[scotty nm35]

No issue with my GTX and no restrictor, I have 8.5 bar peak oil pressure on the gauge.

[jet2nv]

im really looking for results on the gt35 on either a rb25 or rb30det i know the fords are prone from factory to blow the seals for this reason i just want to make sure it will be fine with a restrictor as for warranty purposes

[JonnoHR31]

gt35s run the same centre bearing section as gt30s. been running my gt30 without an extra restrictor with a 25 pump for years with no problems

[QWK32]

I've been running my GT35 on a RB25 with no oil restrictor, for ~3years now with out any problems.

I asked around about this as well and was told not to use a restrictor in the oil line as it is built into the turbo.

[jet2nv]

ok cool so i just got a email back from garrett and they said it all depends on the ammount of oil pressure your engine has and to make sure you dont get more then 55-60psi goin into the turbo and that a inline restrictor cant hurt

[scotty nm35]

Of course they wont be replacing the turbo under warranty anyway. Too small a restrictor will definitely cause issues and I have seen too many GT35 turbine wheels shear the shaft at the rear bearing to not run a good supply of oil to it. Just my opinion though.

[zebra]

I agree, just make sure you have a nice BIG oil drain

[jet2nv]

ATPUSA said if i follow his recommendations of using a restrictor it will be covered under warranty as even gt35 they fit the restrict the oil im just goin crazy here cause the last few garrett BBs turbos have died do to a normal fitting as do most fords with the same fitting so im not to sure what to do here its on a rb30det yet to be fitted back into the car so i cant excatly test how much oil pressure it has

this is what they said

Jayson, have a look on the “turbobygarrett.com” web site (select Turbo Tech, then Basic, then Oil and Water Plumbing) it shows the max oil pressure for a Garrett Ball Bearing is 60psi, more than 60 psi may result in oil leak issues

[jet2nv]

yeah ive got all braided lines even the oil drain is a nice big line with all an10 fittings looks quite sexy having a braided oil drain

[zebra]

I would go -12 tbh, but if you already have all the -10 stuff give it a go

[TiTAN]

I would go -12 tbh, but if you already have all the -10 stuff give it a go

i had big issues with my GT35 and a 5/8" (-10) oil return and they were resolved by making the drain 3/4" (-12)

also my oil feed to the turbo has a 1mm restrictor in it just before the turbo, has had it for over a year now without any issues.

[jet2nv]

ok cool as titan so i should get a 1mm fitting thats wat ive been told

what issues did u have with the 5/8 oil drain?? the braided line i have it about 60cm long but iknow its the thickness that i need to get right

[TiTAN]

i had issues with the oil not draining away fast enough/properly at high load/revs causing it to force oil past the seals making a massive oily smoke cloud behind me.

[jet2nv]

ahhh shit lol i just bought everything and fitted it all i had to get the 3/4npt to 10an for the block

i wonder if they make a line thats a an-12 with a an10 fitting so i can get the block fitting

[zebra]

The main issue, is have a look inside the fitting, it will be about half the size of the hose

[jet2nv]

well maybe i should sue these people who are selling these lines saying that are 100% perfect for the gt35

[jet2nv]

its strange u guys say that cause all the return lines and fittings that even garrett supplies with the turbo and also and the hole in the turbo drain is a 5/8