My oil feed line is 3/8" and has a pressure gauge incorporated. It reduces to 1/8" when it enters the turbo and the drain tube is 5/8". At WOT, pressure on the gauge will spike at about 60psi.
Some people tell me pressure should be around 10-15 psi at WOT, my turbo build guy said 60-70 is FINE, as did Turbonetics tech support just now. I'm definitely noticing that I kinda shot myself in the foot with the 3/8" feed line and should've gone with a 1/8"
I'm just looking for some opinions, here--should I put a restrictor in there, what are you guys running for pressure, etc. I just had this turbo rebuilt and don't wanna drown the thing out or kill it pre-maturely. Thanks in advance, guys...I really appreciate it.
i see 80 psi some times... but i would put a restricter in there for sure.. i was blowing out all kinds of smoke untill i put it in.... just get these two peices from APT turbo and your good
Oil inlet flange
Oil restricter
and if you wanted here is the gasket for it...
gasket
but this way no matter what your oil pressure is your turbo is only getting as much as it needs...
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
Thanks for the help, Josh. I'm thinking this piece may be the best way to combat the "far too big" feed line I used. Just out of curiosity, what is the size of your feed, as well as drain tube off the turbo?
if you put this restricter in it wont matter to much how big your feed line is... it will only alow so much to flow threw it ... i would have to check how big mine is... its a fair size feed line.. just braided steel to it.. and then a 3/4" drain litterly straight down
i would be willing to bet if you just order the above parts your problem willl be fixed. as i had the same thing and it fixed mine
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
Pressure is not the issue for the turbo, Volume is. If volume exceeds the amount that can easily drain from the turbo, you will get smoke.
A restrictor will reduce the volume going to the turbo. Most factory turbo systems use a restrictor.
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does anyone know the size of the hole in the ATPturbo.com restrictor? I can get one custom made locally for cheaper. (shipping/brokerage to canada sucks)
thanks
Last time I calculated it, it was 1/16". We made our own, but the heat from welding wreaks havoc on the threads. That's the main reason I just ordered this one, y'know?
