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Join Date: Aug 2005
Location: Centerville, Ohio
Posts: 1,095
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Do 1979 930's have the rubber centered clutch ??
from the factory that is....
TIA
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" The reason the Irish are always fightin each other is that there are no other worthy opponents" |
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05-21-2007, 05:50 PM
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Location: Raleigh, NC
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yes they do
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John A. 1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.) 05 Boxster S: For the Track. 06 Dodge Ram 2500 Power Wagon: Tow Vehicle |
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05-21-2007, 06:53 PM
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Location: SoCal
Posts: 372
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Yes, Porsche changed to the rubber centered clutch discs on the 3.3 Turbos. They tend to work fine on relatively stock cars, but once the modification bug bites, they don't hold up to the increased power for too long. Age also plays a big factor in their failure.
The good news is, you can swap a rubber centered disc for a 3.0 liter 930 spring centered disc without any modifications.
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Brian 1981 930 |
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05-21-2007, 06:59 PM
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Location: Centerville, Ohio
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I am wondering if I should change the clutch on my 930.. it's a 79 with only 15K on the clock since new... so I am sure it's old and dry!!
What do you guys think,, drive it until I have a problem? or simply replace it? Thanks guys! EM
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" The reason the Irish are always fightin each other is that there are no other worthy opponents" |
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05-21-2007, 07:36 PM
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Location: Raleigh, NC
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If you have the engine dropped anyways, it couldnt hurt. I wouldnt drop the engine just to replace the clutch though, If you start fixing things that arent broke on these cars you wont have any money left for the fun things (turbo, intercooler, exhaust, etc.)
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John A. 1979 Porsche 930: 3.4L, SC cams, Twin plug, Leask WUR, Custom SSI turbo exhaust, Tial WG, K27HFS, and we can't forget the Zork (short lived depending on my homeowners assoc.) 05 Boxster S: For the Track. 06 Dodge Ram 2500 Power Wagon: Tow Vehicle |
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05-21-2007, 08:21 PM
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Join Date: Mar 2002
Posts: 3,563
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Quote:
 Seriously, if you are intending to do serious bolt on upgrades and the reliability of the clutch is in question, then it might be worth replacing *if* you are planning an engine drop anyway. Otherwise just leave it until it starts to exhibit slipage etc...
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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05-21-2007, 11:34 PM
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resident samsquamch
Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,815
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The "rubber" in my '87 gave way with absolutely no warning at 36,000 miles. The car had never been tracked, was babied it's whole life, and had practically zero mods (B&B headers). I nearly over-reved the engine when it happened! I'm told that's one of the issues with the rubber centered disc, it doesn't provide the same wear feedback that a traditional clutch does....it just sort of lets go! BTW, there was plenty of material left on the disc, it was the rubber puck that just ripped!
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-jeff back in the saddle: '95 993 - just another black C2 *SOLD*: '87 930 GP White - heroin would have been a cheaper addiction... "Ladies and Gentlemen, from Boston Massachusetts, we are Morphine, at your service..." - Mark Sandman (RIP  )
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05-22-2007, 02:21 AM
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A fellow Pelacanite
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In my history that came with my 3.3 I found some paperwork relating to the clutch failing after the car was only a year or so old. It didn't state what happened but I am guessing the rubber failed.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG. Fitting - New service kit. Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head. 1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods. Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit. http://www.danasoft.com/sig/Iamnotanumber.jpg |
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05-22-2007, 07:48 AM
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Location: Centerville, Ohio
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ooh.. man you guys give some food for thought.. I may error on the side of safe and just replace the old clutch .. it's better safe than sorry! A clutch package is cheaper than a top end or total rebuild on the 3.3
 hahah!Thanks for the input guys!
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" The reason the Irish are always fightin each other is that there are no other worthy opponents" |
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05-22-2007, 10:38 AM
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