Gerrett T series oil restrictor?

[TT SHO PROJECT]

Hi, ok this is probably something i should of learned before even fireing up my turbo sho for teh first tme.... has anyone here used a gerret series turbo and have needed to run a oil restictor in the oil feed of the turbo? this might explain why my turbo ****** oil out the exhaust. if this really is needed then does anyone know where i may pickup an restrictor for the turbo? any websites ect...

thanks.

-Bob

 

[NCTaurusSHO]

we are running a garret w/ an inch drain tube. Is your turbo higher than your oil pan drain? Is your oil feed directly at 12o'clock? You can put a ball type valve from ace hardware on your line.

 

[Toolman]

I have never heard of an oil pressure restrictor for a turbo. Either your drain mechanism is not working properly, or your turbo needs rebuilt. A small amount of blowby into the turbo will cause a bit of smoke, but if a LOT is coming out, something is not right. How many hours on the turbo?

 

[TT SHO PROJECT]

we are running a garret w/ an inch drain tube. Is your turbo higher than your oil pan drain? Is your oil feed directly at 12o'clock? You can put a ball type valve from ace hardware on your line.

the turbo is Lower than the oil pan all together. hence the "oil pump" to return the oil to the egine via teh valve cover. and yes the oil feed is as 12:00. i thnk im useing a 5/16th return line maybe i should up it to a 3/8th or tahts what i was thinking when i first put it together... but the pump draws 300+gph so it should be able to pump enough out of the 5/16th line. i think im gonna try a t3 oil restrictor (found one on www.atpturbo.com) and maybe a bigger 3/8th line for the return.

 

[TT SHO PROJECT]

I have never heard of an oil pressure restrictor for a turbo. Either your drain mechanism is not working properly, or your turbo needs rebuilt. A small amount of blowby into the turbo will cause a bit of smoke, but if a LOT is coming out, something is not right. How many hours on the turbo?

as for the hr's/miles on the turbo.... who knows lol. i got it off a 86 thunder bird that was in a junk yard (paid 75 bucks for it with manifold) i used the manifold for the ******

i know the seals arew not in good shape as when i first tested the turbo i used a shop vac to spin it and used some wd40 to oil it and even with no oil pressure it still came out the turbine (it=oil) so im sure the turbo needs a rebuild or atleast some new seals. i might pick up a new center section from vecco racing (99 bucks) if i must (probably should) and see how that works.. if it ****** oil still after the restrictor and bigger return line then the only other thing i can think of todo with out completely changeing the setup is to run a 2nd (oil pump) to help with the draining.

i have also read on quite a few pages that the gerret T series all have this problem and do need a restricor UNLESS if the turbo its self has one built in the center section. (probably a newer thing? as my 19 year old turbo does not have this.)

 

[Mike Kelly]

turbo oil

Please allow me a thread hijack, just once.

On a 04 Ford-6.0 diesel turbo, I noticed when changing the air filter, the turbo has a little bit of oil in the inlet housing of the turbo. Anything to worry about? 37,000 miles. Thanks Mike

 

[TT SHO PROJECT]

Please allow me a thread hijack, just once.

On a 04 Ford-6.0 diesel turbo, I noticed when changing the air filter, the turbo has a little bit of oil in the inlet housing of the turbo. Anything to worry about? 37,000 miles. Thanks Mike

thats a lil soon for a turbo to go bad.... my guess is it is probably your pcv system (if there is one on a diesel?) it should run back into the inlet of teh turbo hence there being some oil in the inlet, if its just a lil bit of oil (enough to cover your finger tip or 2) its nothing to worry about but if its alot of oil (enough to cover the palm of your hand.) then id consider a turbo rebuild.

just my $0.02 someone correct me if im wrong

 

[Mike Kelly]

Thanks for the reply. I will look for at the return inlet tonight, I was not paying attention yesterday. As stated the amount of oil was just enough to cover one finger tip. I will let you know tomorrow morning about the return.
Thanks for letting me butt in. Mike Kelly

 

[SuperchargedSHOguy]

Bob, sounds like you really need to rebuild that turbo, or find something else to use. I had a CT-26 do that and once I tore it apart, the seals were shot. I was getting oil into the TB and intake tubing as well as the downpipe. It was cheaper for me to buy another used setup than it was to buy the rebuild kit from Toyota.

 

[TT SHO PROJECT]

yeah well i wasnt expecting the turbo to even spool up hehe. since it was off a junkyard car i had no clue how bad shape it was in.. tho it doesnt have much shaft play. but i guess the seals are just shot. its 60-70 bucks to get a rebuild kit or 99 bucks for a new center section. so its pretty cheap stil... well i gotta run. ill keep everyone uptodate still.

-Bob

 

[NCTaurusSHO]

Usually on an oil pump system they have a resevoir tank for the oil then the pump pumps it out from there. Is your fuel pump rated enough to pump hot oil, fast enough at least? If you take the feed line off and put it in a jar and start it(rev the engine up) and the oil comes out VERY fast.

 

[TT SHO PROJECT]

Usually on an oil pump system they have a resevoir tank for the oil then the pump pumps it out from there. Is your fuel pump rated enough to pump hot oil, fast enough at least? If you take the feed line off and put it in a jar and start it(rev the engine up) and the oil comes out VERY fast.

well for my first idea i was gonna use a oil resevoir (but i got lazy )... so i might still have to do that... i was gonna have a box with the drain line from the turbo uptop and a small vent hole up top too and the pump sucking from the bottem of the "box" but i think if i do that im just gonna cap off a 10" section of 3" exhaust pipe and use it as the resevoir.... i have a quick question... is there more than one crank case vent? besides the one on the front valve cover? im figuring that since i am pumping oil in the one crank case vent maybe there is a backup of pressure from me pumping oil in it with no where for the air to escape, i ask this because sometimes when i have the car running and i open the oil cap the "oil pump" speeds up a lil bit.

yeah i had the oil drian line off and a jug under it to catch teh oil to observe flow it does flow a decent amount when reved. but ill put a fix to that with the oil restrictor.

-Bob

 

[NCTaurusSHO]

yes there is a vent in the middel of the valley under the intake manifold it has a hose coming from it to the bottom of throtte body i dont reccomend restricting the oil feed to the turbo it spins very fast. Do you have coolant lines going to the turbo ?
the oil will help cool it. I know that turbo has coolant ports on it and that housing is verry thin compared to a non coolant cooled turbo,so be carefull with restriction of the oil.

 

[TT SHO PROJECT]

yes it's a coolent cooled turbo... but im not gonna bother hooking up coolent lines 2 and from it. iv read over the years that you really Dont have to run the coolent lines as long as your not boosting the **** outta it. as soon as i have some extra cash im getting a new "oil cooled" center section for it and the restrictor valve...

::FACT::
Some gerret "T" style turbos come from the factory with the restrictor so i see nothing wrong with useing it not only that but iv heard that your spool up times are much better since there is less Drag from the extra oil pressure. (witch i noticed my self... spins much better with no oil running thru it... as soon as it sees oil pressure its harder to spin.) a normal t3 Only needs about 10-15psi of oil pressure at idle and 35-50psi At the most under full load. so thats where the restrictor comes in to play, well that and saving the seals .

 

[SuperchargedSHOguy]

Bob, lots of the DSM guys around here do not run coolant lines to their turbo. Same with the MKIII Supra guys. I was going to on my turbo setup on my Supra, but, like with the DSM, just let it cool down after a hard run before you **** the engine. Besides, who wants 2 more lines to run anyhow . A friend of mine was boosting 20+psi on his DSM without the coolant lines, so you should be fine.

 

[somedude_001]

does the coolant line thing go with any turbo or are there certaint turbos that need to have the coolant lines?

 

[1slickRED89]

somedude_001 does the coolant line thing go with any turbo or are there certaint turbos that need to have the coolant lines?

most OEM turbos are water cooled. this extends the oil change interval. which doesn't matter on a race car anyway, so many aftermarket units don't have h2o cooling due to this.