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07-31-2009, 06:50 AM
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#1 (permalink) |
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Registered User
Join Date: Oct 2007
Posts: 89
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ACT clutch pressure plates - Extreme vs Heavy Duty
Does anyone know what the differences between these pressure plates are?
All I see is that Extreme is more expensive - but they don't have numbers (that I've found) that differentiate the two. Thoughts, opinions, links? One more thing, ForceFed says they have these for an Elise and ACT Advanced Clutch Technology® 15th Anniversary (1994-2009) says "We currently don't have products available for this specific vehicle." Do the ForceFed really have them? |
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07-31-2009, 07:12 AM
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#2 (permalink) |
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Registered User
Join Date: Oct 2007
Posts: 89
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I found this info on Monkeywrench Racing - Performance Sold Here - Celica - MR2 Spyder - Corolla - Lotus Performance
Pressure Plates: Sport - SP - Clamps load increase of 20% to 40% - Pedal feels stock to moderate - Recommended disc: Street Heavy Duty - HD - Clamps load increase of 20% to 50% - Pedal feels stock to moderate - Many SFI Certified to insure safety - Recommended disc: Street or Race Xtreme - XT - Clamps load increase of 50% to 120% - Pedal feels moderate to stiff - Many SFI Certified to insure safety - Recommended disc: Street or Race Maxx Xtreme - XX - Clamps load increase of 70% to 150% - Pedal feels stiff to very stiff - All SFI Certified to insure safety - Recommended disc: Race |
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07-31-2009, 10:59 AM
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#3 (permalink) |
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2009 XP National Champion
 Join Date: Oct 2003
Location: Tempe, AZ
Posts: 1,537
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If you have anything up to about 270hp, the HD is great. Above that I recommend going to the 6 puck sprung hub center disc with the HD if you are running on the street. IF you are running track only the non-sprung hub is lighter and isn't too grabby. I believe the 6 puck + HD is good for well over 250lb-ft.
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2008,2009 X Prepared Solo National Champion |
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08-02-2009, 10:55 AM
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#4 (permalink) |
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User, Registered
Join Date: Sep 2005
Location: Leesburg, VA
Posts: 1,832
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I got the XT, it has been fine with the VF2 power. The pedal pressure is somewhat stiffer than stock, but not unbearable. I got used to it after a few drives.
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Francis 2006 Chrome Orange Elise: LSD/TC, Nitron SAs with 425/650 springs, BWR 7/8" Front Bar, Eliseparts bumpsteer kit, VF Stage 2, 2bular Header + Sport Cat + 8x24 GT3 Muffler, ECU Tune by Jermaine, Smaay's fuel rail, ACT XT clutch, Saikou Michi dual catch can, Moroso pan, Manly's mount inserts & FF Engine Damper 2000 Black Integra Type R: - 213,000 miles...running again! |
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