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89 930.
 
Benny771's Avatar
 
Join Date: Jul 2008
Location: Canada Ontario
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Garrett GT35R

Garrett GT35R , would this be a good bolt on upgrade for my stock 1989 930?
Possible spare?

http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT35/GT3582R_714568_2.htm


Seeing if anyone has one.
Sorry, im new at this part.

Last edited by Benny771; 11-23-2008 at 01:45 PM..
Old 11-23-2008, 01:43 PM
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These guys sell them http://www.speedforceracing.com/productsporsche_turbochargers.php

Looks like GT35 is too large for stock.
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Last edited by David; 11-23-2008 at 03:05 PM..
Old 11-23-2008, 03:03 PM
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The GT-35r is WAY too big for a stock motor. I would say a GT-30r might be closer to the right size when used on a stock motor. I have a 3.6L with all of the goodies including cams and EFI... and I am using the GT-35r...so I would think its way too small for the stock motor. I would think a GT-30r or a KKK series turbo with a bigger cam and a good I/C would suit a stock motor better. DONT run over 1 bar...EVER!!!!
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Old 11-23-2008, 03:52 PM
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Honestly I have to agree here on this one.
The GT35R is friggen huge and I see often some of the Subaru and Evo guys running those
even on stroked 4G63's or the 2.5liter motors and they even with a tune have horrible
lag. however when they are bloody spooled they go-go-go.

I supose it depends on if you
have a 3.0 or 3.3 and how your tune is completed. In addition like turborat930 said above
he's running 3.6 fortifed.

I also would be concerned about management even with a GT30R.

Since your really looking at about on the scary side 1BAR anything over is well dangerious
and I would consider something in the size range of a large Evolution III 16G size wise and if you wanted a little more 18G but considering that the 18G's sweet spot is like 18-22psi
I would consider something very efficiant that exists around 1BAR but offers you a quicker spool. I wouldt waste my time with a 35R unless you were more extensively modifed.

You'll also require A/F adjustments and make sometiming adjustments to get things smoothed over.
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Old 11-23-2008, 11:06 PM
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Thank-you all.....

Your input is very appreciated. I will look for a different one.
Old 11-23-2008, 11:51 PM
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I got a T-4 PT-67 dual ball bearing Precision turbo and it spools fine (stock sized primaries) on an EFI car- my turbo is basically the same as a Gt-37R. A 35R on a otherwise stock motor may not be that horrible, however you may be better suited to run a k-27/ 27 HF/ 29/blah blah blah. I also heard the the old school t-67s worked good on CIS cars. Just remember when sizing a turbo- it is bad to go too small (on the hot side)because you do not let any of the heat out of the cylinders and it is bad to go too small on the cold side because you get no top end. A 16g or an 18g woul not work on these motors unless you had 2 of them- then you would have something.
Turbo lag is not the worst thing
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Last edited by 930gt-40r; 11-25-2008 at 01:45 PM..
Old 11-25-2008, 01:41 PM
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