Formal Apology

[The Dan]

good to see someone tells the truth no matter if they are right or wrong in the first place, i know i am re iterating but so many (performance guru's) will fight to the end to be right even if they are not, ive got a question tho, ive got a pair of high flowed gtr turbo's sitting at home that are spose to have steel wheels, but a magnet wont attach to the rear wheels, a workshop owner told me once that the magnet will not stick because of carbon build up, what do you guys think?

Carbon buildup should not effect the magnetism as the magnetic field stretches through this easily.

If they are high flowed properly they should be steel wheeled on the turbine but somone could have just machined the front cover and put a bigger compressor wheel on. The best way is to post up the part number on the turbo, take the comp cover off (6 bolts I think) and measure the exducer and inducer to be certain.

Series 1 R32 RB20DET = Bush bearing/ceramic turbine

Series 2 R32 RB20DET = Ball bearing/ceramic turbine

Series 3 R32 RB20DET = Ball bearing/ceramic turbine

Series 1 R33 RB25DET = Ball bearing/ceramic turbine/alloy compressor

Series 2 R33 RB25DET = Ball bearing/ceramic turbine/nylon compressor (may or may not exactly be nylon but plastic)

Series 3 R33 RB25DET = Ball bearing/ceramic turbine/nylon compressor (as above)

Series 1 R34 RB25DET = Ball bearing/ceramic turbine/nylon compressor

Series 2 R34 RB25DET = Ball bearing/ceramic turbine/nylon compressor

I'm going to leave the GTR's alone as there is too much contradicting info on the matter.

[djr81]

good to see someone tells the truth no matter if they are right or wrong in the first place, i know i am re iterating but so many (performance guru's) will fight to the end to be right even if they are not, ive got a question tho, ive got a pair of high flowed gtr turbo's sitting at home that are spose to have steel wheels, but a magnet wont attach to the rear wheels, a workshop owner told me once that the magnet will not stick because of carbon build up, what do you guys think?

Turbine wheels are commonly made out of a material usually referred to as inconel (an old tradename). Nominally this is a type of steel. Specifically it is an austenitic nickel chromium based alloy. It is non-magnetic.

Nickel content is more than half, chromium is about a quarter, iron content is only some 5% or so.

So the turbine can be both steel & non magnetic.

Look here.

http://en.wikipedia.org/wiki/Inconel

[DRD-00F]

series 1 turbos had steel front wheels, s2 had nylon on the r33's. series 1.5 had steel. (i think )

lol... that's lovely to hear, you were a bit more certain in the dyno cage

You have to remember too that some of these cars are old, who knows if it's still the standard turbo...