Turbo Upgrade For M35

[joe rs250t]

hi

can someone tell me what the best option is for replacing ceramic turbo

because of exhaust upgrade it is getting to 15psi

and from wat i have read this is a one way trip to destroying turbos

thanks

[scotty nm35]

Mine's running 15psi too, Its standard boost on the m35. The 34 had the brittle wheels that could only handle 12 psi. You should be fine for now, just source the parts in preparation, they dont last forever.

I am looking at the Garret upgrade, not sure what size yet, but this will require a new manifold to be custom made.

For bolt on a highflowed original is easiest, there is a HKS GT-RS that will bolt up too but no-one has gone the aftermarket route yet. You may have noticed its a bit of a pain to get to.

[andy65b]

As Scott said; standard boost is up to 15psi.

My boost level did not change at all when I changed to a 3 inch exhaust.

It seems most of the turbo's are failing for 2 reasons.

1) where there are 2 cats installed at compliance. This is said to put too much back pressure on the turbo.

2) quality of oil/oil change frequency. The second common failure is coming from the shaft starting to bind at the bearing and this seems to destroy the exhaust turbine.

The best up grade seems to be high flowing the standard turbo as this allows the max boost to be held up to the redline.

Cheers

Andy

[joe rs250t]

As Scott said; standard boost is up to 15psi.

My boost level did not change at all when I changed to a 3 inch exhaust.

It seems most of the turbo's are failing for 2 reasons.

1) where there are 2 cats installed at compliance. This is said to put too much back pressure on the turbo.

2) quality of oil/oil change frequency. The second common failure is coming from the shaft starting to bind at the bearing and this seems to destroy the exhaust turbine.

The best up grade seems to be high flowing the standard turbo as this allows the max boost to be held up to the redline.

Cheers

Andy

thanks

cats arnt required in nz, so should be ok there

are the ceramic parts replaced whan high flowing

[andy65b]

Have a look at this thread on a highflowed tubro.

(yes, metal impeller and in this upgrade ball bearing also)

http://www.skylinesaustralia.com/forums/Tu...me-t280687.html