2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Q about '89 turboII and gtus brake rotors...

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Old Jun 4, 2003 | 05:42 PM
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Red Mist
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Q about '89 turboII and gtus brake rotors...

are the brake rotors in the rear for the tII and gtus vented? or non-vented? are there any s5's that are not vented?
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Old Jun 4, 2003 | 06:37 PM
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4-lug brakes are ventilated front, solid rear; 5-lug brakes are ventilated all round. So yes, the Turbo and GTUs have ventilated rear discs.
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Old Jun 4, 2003 | 06:48 PM
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Red Mist
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sweet. thanks
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Old Jun 4, 2003 | 07:25 PM
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Rotary Freak
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but the S5 GTU had 5 lugs, and solid rear discs. along with single piston front calipers.
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Old Jun 4, 2003 | 07:46 PM
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From: b.r.
what about the s4 gtu?
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Old Jun 4, 2003 | 08:18 PM
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Red Mist
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From: UCLA
so the gtu had 5 lug solid & gtus had 5 lug vented?
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Old Jun 4, 2003 | 08:46 PM
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my s5 GTU has 5 lugs. 4 piston vented fronts and single piston solid rears
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Old Jun 4, 2003 | 09:16 PM
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Looks like my info was correct for S4's, but not quite for S5's. I didn't read the FSM closely enough. Plus I was referring to the GTUs as asked, but typo'd GTU instead.

My answer to the original question is still correct. Turbos and GTUs's have ventilated rear disks.
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Old Jun 4, 2003 | 10:57 PM
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Originally posted by myrx7hasissues
what about the s4 gtu?
It came with the same brakes as the T2, 'verts, GXL, Sport.

The 4 piston front vented and single piston rear vented.
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Old Jun 4, 2003 | 11:00 PM
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s5 t2 4 piston is a stright bolt on to the s5 gtu right?
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