Re: l20b turbo size?

[andrew smith]

The rb25 does have ceramic turbine wheel and some models also use a carbon composite compressor wheel.They say these arent safe to use at anymore than 14psi as they have a tendency to come apart although one turbo guy has told me that this is cause by a build up of carbon behind the turbine wheel that rubs and gets super hot which causes the failure.He said that he has seen as many running standard boost as high boost fail and reckons that the sooty jap fuels may have a lot to do with it.
Andrew Smith

David Thompson wrote:

 if the rb25 is not ceramic, it will be perfect
 >From: andrew smith<[EMAIL PROTECTED]>
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>Subject: Re: l20b turbo size?
>Date: Tue, 05 Mar 2002 18:23:10 +0800
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>Niether have ceramic wheels as far as ive seen.
>
>E Smith wrote:
>
> > Adam,
> >
> > I don&rsquo;t think the S15 T28 has a ceramic turbine wheel. I don&rsquo;t know
> > about the S14 though.
> >
> > Cheers
> >
> > Feral Errol
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Rowe, Adam
> > Sent: Tuesday, 5 March 2002 3:45 PM
> > To: [EMAIL PROTECTED]
> > Subject: RE: l20b turbo size?
> >
> > At about 15PSI the exhaust wheel comes apart from the shart due to the
> > bonding and the type of wheel (ceramic).
> >
> > -----Original Message-----
> > From: David Andrews [SMTP:[EMAIL PROTECTED]]
> > Sent: 05/03/2002 13:37
> > To: [EMAIL PROTECTED]
> > Subject: Re: l20b turbo size?
> >
> > Thommo,
> >
> > For some reason I am thinking that the S15 type turbo's won't
> > comfortably
> > run more than 14psi without having some trouble? This could be due to
> >
> > their efficiency map I'm guessing.
> > Anyone else confirm? I'm curious coz i've got a S15 SR20DET so want
> > to
> > know how much I can run safely.
> > Regards,
> >
> > Dave
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