s15 t28 upgrade questions

[fenderguitarist]

so my t25 is starting to let go im about to upgrade my turbo on my redtop i did a bit of research but everything is scattered and not really answered so far i got the clocking plates im running cs bottom mount lines to my t25 im just using the stock banjo bolt for the oil now ive been reading that i need some sort of a oil restrictor for the t28 since its full ball bearing anyone have any idea what size this restrictor has to be and whats compatible with my CS lines? now time for a noob question is it safe for me to run a t28 without fuel upgrades and can i use my turbo elbow from my t25??

[240life]

10-12 psi is safe witout upgradesYour turbo elbow to your exhaust will workFrsport has the restrictors

[Hijacker]

10-12 psi will cause detonation on a T28. I suggest running 7-ish. The T28 flows a lot more air than the T25 does, so running the T28 at 12 psi is not the same as it would be on the T25.

You will have to elongate one of the bolt holes on the T25 turbo elbow to work, as well as the gasket if you reuse your T25 gasket. Other than that, it will bolt up.

[fenderguitarist]

10-12 psi is safe witout upgradesYour turbo elbow to your exhaust will workFrsport has the restrictors

nice, any idea what size it would be will these work with the cs lines http://www.atpturbo.com/Mercha...e=BCS??
Modified by fenderguitarist at 2:56 PM 2/17/2009

[regisfr]

10-12 psi will cause detonation on a T28. I suggest running 7-ish. The T28 flows a lot more air than the T25 does, so running the T28 at 12 psi is not the same as it would be on the T25.

You will have to elongate one of the bolt holes on the T25 turbo elbow to work, as well as the gasket if you reuse your T25 gasket. Other than that, it will bolt up.

I have a T28 from an S15, been running at 12ish, highest spike at 13. I have it at that setup for over two years, probably less than 10k miles. my motor is a redtop, had a head job, matched ported exhaust and intake. Intercooler, and all the other supporting mods. Also SAFC

[fenderguitarist]

I have a T28 from an S15, been running at 12ish, highest spike at 13. I have it at that setup for over two years, probably less than 10k miles. my motor is a redtop, had a head job, matched ported exhaust and intake. Intercooler, and all the other supporting mods. Also SAFC

so did you use a restrictor for the oil line??

[fenderguitarist]

anyone??

[Clawhammer]

I don't think you did enough research. Search for content created by me!

[CMG]

I also had a thread about the T28. No restrictor needed, use stock banjo into block.

[supreamS14]

http://www.phase2motortrend.com/babeoilretsi.html0.03" oil restrictor bolt for the turbo side. Intended for all GT or T-series ball bearing turbo chargers. Ball bearing turbos require use of the restrictor bolt to avoid over-pressuring the turbo oil seals.