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14b oil psi range

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YZFR1

10+ Year Contributor
533
54
Apr 8, 2010
Atlanta, Georgia
Have been trying to search and can't come up with anything, as far as, exact numbers!!

Would be greatly appreciated if someone could let me know the exact psi range.
 
What?? I'm confused

Does anyone know the psi range for proper operation of a 14b turbo?
 
I believe that with the stock feed line with the restrictor built in it will see a maximum of about 35psi at WOT. I'm not sure what the low side of the operating range is, but maybe that will give you an idea of what to expect on the high side.
 
Thanks for the info, Gravedigger!


Could anyone confirm if it's safe to run 65-70 psi through my sexy 14b?
 
35psi at WOT? Where did you get that from?

The general rule of thumb, 10psi for every 1000rpm is what i have been told. You do not want to hit more than 100psi however.

So is it ok, it all depends on variables....

Also this is on my 2nd gen, not sure if it would change much for a 1g
 
35psi at WOT? Where did you get that from?

The general rule of thumb, 10psi for every 1000rpm is what i have been told. You do not want to hit more than 100psi however.

I got that from someone on here and it just stuck in my head. I thought that is what it runs at with the factory feed line off the head and the built in restrictor in the banjo fitting. The 10psi for every 1000rpm is more of a motor oil pressure reading than the turbo feed pressure from what I understand, but I could be wrong. It wouldn't be the first time.LOL
 
The question is "What oil pressure range is comfortable for the 14b".

Well, I wouldnt take it above 65psi if it were me. My car gets up to 100psi at times, and my banjo restricts it down to around 65psi...this is for my 16g.

However, I cannot give you an exact 'range', but Jusmx will peek in and tell you to feed from the head for sure.

I can't feed from the head because my lifters barely get oil sooo, yeah.
 
He has a 91.....so it will be feeding from the head anyways. Unless he decided to change it, which would be stupid on a stock turbo setup. Unless hes a auto and now has upgraded to the 14b from a 13.

Anyways, yes it is motor oil pressure, but that is the same pressure the turbo will see. ( If it has the built in restrictions or the 1g line, it will be reduced but you can run off of these numbers knowing you have the proper restrictions in place so it is nothing to worry about.)
 
I've done a lot of reading and asking around, honestly, i don't think it matters where you feed the turbo from, comes down to preference, imo! As long as you give it what it wants.. nothing more and nothing less!!

The best thing to do, is do your own DD. That's why i came here, trying to figure out exactly what a 14b likes! Or a 16g for that matter, i believe it would be very similar.

Didn't feel like going the Helicoil route on the head, so i'm getting a OFH feedline with a restrictor but not trying to rely solely on the restrictor. I will be hooking up an oil pressure gauge and monitoring the pressure going to the turbo. If it's too much.. figure out a way to drop it to a safe level.

At the same time, i want to give it close to the max psi that it can safely handle because i plan on abusing it hard. And with adequate pressure and slightly cleaner oil, i think it stands a slightly better chance of surviving a tad longer.

I just try to do the best i can :)
 
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