Precision recomends not using a jb turbo because the s2000 oil pressure is so high.

I dont know anything about what restrictor you need tho.

 

I thought the JB turbos needed an .065 restrictor?

 

I guess I should just contact precision and ask them about what restrictor for a jb turbo?

 

Edit - The 0.065" is used for the JB

 

Nope, .035 water cooled ball bearing and .065 journal.

 

Buddy of mine with his S and a similar turbo oiling and drain setup to mine decided to put a .075" restrictor on his Precision 6262 JB and burned up the bearings and it only took one day for it to happen. He is using a -3 feed from the relocation block on the engine and a -10 drain at the front, top, drivers side of the pan.

I do not recommend using a restrictor with a -3 feed coming from the relocation block and if the drain is setup properly with any JB turbo's.

 

That send location may or may not have something to do with it. I wonder if the pressure is lower off the relocation block?

I have a .035 restrictor on my water cooled ball bearing unit with a -4AN feed, works great!

My previous turbo (journal) had no restrictor with -3AN feed and was smoking in vtec and right after you would let off the gas (Not a lot but definitely noticeable on the dyno).. I didn't think about trying a restrictor for it until I had bought a new ball bearing unit and installed it. I bet it would have been fine with a .065 restrictor.. It's still sitting in my garage with only around 5K miles on it.

 

^^Where was your turbo oil feed being taken from at this time? I'm thinking having the oil feed to the turbo from the relocation block has a little lower pressure and may be the best spot to take it from.

I have had my oil feed from the relocation block for 7 years on 3 different JB turbo's with a -3 line feed line and a -8 drain into the girdle and no restrictors EVER and not one problem EVER.

 

So how many people are getting this false knock pick up from their sensors?

I was one of the first people to get my Mase kit up and running and have had all these issues as well, but due to lack of other people having the kit, I thought my motor was the issue.

My car smokes on decel when coming to a stop, and also have a pretty constant oil smell. I'm sure some of you may remember this from when I was posting of my issue with smoking after the install. So glad that I didn't go through with rebuilding my motor yet.. saved money again, for now.
I've got to call Mase for this restrictor, and hope thta it is indeed the fix to my problem.. it drives me up the wall, and its been this way since January!!

False knock!! This shit costed me an extra $300 freaking dollars!!
On the dyno the tuner was picking up knocking randomly. My knock sensor is the original one, and has never been broken.
The reason it costed me money was that I trailored the car up to the dyno (an hour and a half away) and otw there I stopped at a Shell station to fill the tank up.
Well the false knock reading kept popping up.. I didn't want to go home in disappointment and because we were unsure if it were bad gas, or a faulty/false knock sensor, I had them drain my tank.. yup.. a full tank.. and put some q16 in..
All in all I paid for new plugs, labor to drain the tank.. and for the q16 fuel.
Yup.. we were still picking up knocks..
Called it a day, and came back the next week to finish it off properly..

I wish I knew of other people having these issues too, sooner, so I wouldn't have gone through the trouble and extra money.
/rant

 

I had and still have my oil feed from the stock oil pressure sensor location off the block. I have put the stock dummy sensor on the relocation block and run an AEM sensor on the feed "T".

If you run your feed this way then IMO run:

journal bearing: .065 restrictor
Water cooled ball bearing: .035 restrictor
Ceramic ball bearing???