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Scorpio
Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia
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 Posted: Thu Jul 29, 2010 1:52 pm Post subject: SPEC Clutch |
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Anyone know torque/ horsepower specs for Spec clutches?
Their website lists GT torque but none for na
Any SPEC users experience welcome
Dont know whether to get Stage 1(Part number- SP151), Stage 2 (SP152)or stage 3( SP153)
Max horseys= 240 ..Probable horseys 190-200
Street Driven - user friendly (not tracked)
http://www.specclutch.com/cars/Porsche/924/1979/Single
_________________
1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT
Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!! |
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Shurick
Joined: 15 May 2005
Posts: 524
Location: Russia, Moscow.
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| Posted: Fri Jul 30, 2010 2:24 am Post subject: |
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I have SPEC stage II installed, but my 931 still not running. With a bit of luck I'll be testing it within a month or two.
BTW, pressure plate is Sachs with re-hardened leafs for grater clamping force.
That's what David Norton from SPEC said to me about their stage I & II:
| Quote: |
The stage 1 will hold 407 Nm and the stage 2 475Nm, so either would be fine.
I normally recommend the stage 2 for two reasons..it drives just as good if
not better than a stage 1 and offers the best wear life. It is a great
daily driver unit than you can depend on for more power if needed, and is
not much more $ than the stage 1. |
_________________
WBR, Shurick
'79 931 -- intercooled K26-3060-6.10 turbo @ 1.2 bar, EFI+EDIS, 951S brakes, stripped interior, 951 look.
'86 924S -- R.I.P.
https://www.instagram.com/ru_pacecar/ |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Fri Jul 30, 2010 2:30 am Post subject: |
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| Scorpio, are you still using the 924 20mm driveline then? |
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Scorpio
Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia
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| Posted: Fri Jul 30, 2010 9:09 am Post subject: |
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| ic932 wrote: | | Scorpio, are you still using the 924 20mm driveline then? |
sure am mate
Hey Shurick ive never had a 931 but i think its a bigger clutch? ie more torque potential..i need the na sized one
_________________
1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT
Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!! |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Sat Jul 31, 2010 3:39 am Post subject: |
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| Maybe check out your buddy (Raceboy) for info. He ran a stock 20mm with boost, can't remember any details though... |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Sat Jul 31, 2010 4:50 am Post subject: |
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I don't think Scorp and Raceboy are exactly buds.
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erstwhile owner of just about every 924 variant ever made |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Sat Jul 31, 2010 6:06 am Post subject: |
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| They say sarcasism is lost on a Yank... Yeah Dan I know...good advise is good advise, source is not important. |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Sat Jul 31, 2010 6:18 am Post subject: |
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Hang on.. you WERE being sarcastic and I didn't get it!...which means....I'M AN AMERICAN TOO  OK, where's my waitress? Damm liberal Arizona waitress supply! |
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Scorpio
Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia
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| Posted: Sat Jul 31, 2010 8:19 am Post subject: |
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funny thing i still read all of raceboys old posts for information..he knows his stuff. And if he was available to contact for info i would but he just so happened to dissapear after my piston issue...you live you learn
_________________
1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT
Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!! |
|
| Back to top |
|
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Scorpio
Joined: 05 Jul 2007
Posts: 1957
Location: Brisbane, Australia
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| Posted: Sat Jul 31, 2010 12:22 pm Post subject: |
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| Quote: | Clutches are rated in torque, so for 250 ft lbs + with good clutch life I like st2+ or 3. The small 8.5 diameter is limiting, even with our high clamp load version. The st1 is OK just over 200 ft lbs, but I’d rather help you get into your budget than sell you something that may not live as long as you want. Has the car been on the dyno yet ?
David Norton
P 800-828-4379 Ext: 110
F 205.491.8593
http://www.specclutch.com
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_________________
1979 NA
MS1..EFI..
GARRETT T25 TURBO
BILSTEIN SHOCKS
GT BASED CUSTOM BODYKIT
Brisbane , Australia
Think mean think fast
all youll see is
my Porsches Arse!!! |
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924 FAQ (Technical)
