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Exedy Twin Disc Sucks My White A$$

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Old Nov 10, 2004 | 07:29 PM
  #106  
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From: Hercules
im having a similar problem.. except my car still runs fine. i think mine is slowly starting to go.. now after 2 or 3 launches.. i will slip every time i switch gears even. i dont get it. i bought this expensive piece thinking it was good.
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Old Nov 10, 2004 | 07:46 PM
  #107  
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2 or 3 launches? I've done 90 5,500-5,700rpm launches and about 20 6,500 on my exedy and it still grips more than enough to spin the tires most of 1st gear.
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Old Nov 10, 2004 | 08:16 PM
  #108  
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Damn this is getting interesting... however, lets keep it civil!
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Old Nov 10, 2004 | 11:02 PM
  #109  
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From: 2003 Evo VIII - Silver
Originally Posted by MattGold
As for the Twin Carbon - It's a very common misconception - but NO it does't hold more power then the regular twin metallic, it will just last longer and will bite harder at an equivilent power level. The upgraded Twin and the Triple will hold more power.

Also Exedy makes MANY quality parts, OE and aftermarket, and to think they are realeasing a sub-par product is assenine. Maybe you just didn't buy the right clutch to go along with your setup.
I can say from experince in driving over 400 evos in the past year that the ACT unit while a decent value priced set up is not in the same leauge as the Exedy units

The ACT does not disengage or shift as quickly as any of the exedy units

The ACT uses a stock stamped steel Evo pressure plate upgraded with a stronger spring which results in a much harder pedal pressure. This stock unit that ACT starts with is designed and supplied by Exedy as Exedy holds the exclusive patent for the clip style release bearing attachment. Exedy is a huge company which also produces all the OEM cluthces for Subaru and the Evo.

Every time I drive an evo with a ACT its NOT enjoyable. They have a harsh feeling and compared to the much superior Exedy units it takes something away from the car. Allow me to qualify this by stating that I am referring to the ACT unit with the Organic disk.

The ACT with the 6 puck that is used in high whp applications is grabby and can break parts of you dont launch it right.

I am just speaking from my own personal experience.


The Exedy units come with a chrome molly racing flywheel and a forged alum clutch cover and the entire unit has been engineered from the ground up for a racing application and high performance.

While the Exedy units are priced a bit higher (like the Hyper single which retails for about $950 - $1000) they do also include the racing flywheel as part of the package which is not included with the ACT

While the ACT unit is ceratinly a decent value priced unit - essentially it is a OEM clutch with a stronger spring.

Effective - but crude

While some drag racers report that tha ACT unit is capable for staight line applications, I find it to be a crude and ill shifting unit and more akin to something you would find on a pick up truck or camaro than a JDM sports car.

The organic material which they use in the standard ACT set up is not as advanced as the more technologically minded materials which Exedy imploys which have superior characteristics

Currently I am running the Exedy triple carbon clutch which I can suggest is prob one of the finest clutches ever made. Basically the pedal pressure is lighter than stock and the engagement is just as smooth as a stock clutch. It has held 667 wheel whp without issue and exhibits ZERO wear after 20 drag passes. The shifting is so fast you would think the car has a dog box as the clutch disks are paper thin and there is almost zero weight on the transmission input shaft.

Frankly, listening to some of these people posting about how great the ACT unit is and how fast it can go in drag racing is kind of like hearing Camaro or Mustang drivers brag about how fast their cars can go in a straight line at the drag stip on a limited budget. Even though you can build a 9 second American drag car cheaply - I still would prefer to stick with my more technologically advanced and more multi faceted EVO.

In choosing a clutch for my car - the price tag and how fast you can go with it in drag racing are not my only concerns

Last edited by DynoFlash; Nov 10, 2004 at 11:26 PM.
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Old Nov 10, 2004 | 11:13 PM
  #110  
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Originally Posted by RPSPP
Anyone please correct me but I think they were using a Lenco Tranny. Not the stocker 6speed.
Completely stock factory 6-speed tranny. Ryan Woon is the current fastest 6-speed.
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Old Nov 10, 2004 | 11:15 PM
  #111  
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Still looking for a answer to this in reference to ACT 6 Puck unsprung.

Originally Posted by Geo@EvoStore
Is anybody making big power and drag racing this clutch frequently like every weekend?
Also the tilton debate is useless. They currently do not make a clutch for a Evo so we should not be discussing it. We will all know soon how well the RPS works. I have no doubt it will please.

Last edited by Geo@EvoStore; Nov 10, 2004 at 11:31 PM.
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Old Nov 10, 2004 | 11:42 PM
  #112  
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From: OXNARD
Originally Posted by Geo@EvoStore
Also the tilton debate is useless. They currently do not make a clutch for a Evo so we should not be discussing it. We will all know soon how well the RPS works. I have no doubt it will please.
Thank you Geo for bringing us into reality. And I too have no doubt that RPS products will speak for itself when cars are driven hard at the track.
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Old Nov 11, 2004 | 04:52 AM
  #113  
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From: Metro Detroit
Originally Posted by DynoFlash
I can say from experince in driving over 400 evos in the past year that the ACT unit while a decent value priced set up is not in the same leauge as the Exedy units

The ACT does not disengage or shift as quickly as any of the exedy units

The ACT uses a stock stamped steel Evo pressure plate upgraded with a stronger spring which results in a much harder pedal pressure. This stock unit that ACT starts with is designed and supplied by Exedy as Exedy holds the exclusive patent for the clip style release bearing attachment. Exedy is a huge company which also produces all the OEM cluthces for Subaru and the Evo.

Every time I drive an evo with a ACT its NOT enjoyable. They have a harsh feeling and compared to the much superior Exedy units it takes something away from the car. Allow me to qualify this by stating that I am referring to the ACT unit with the Organic disk.

The ACT with the 6 puck that is used in high whp applications is grabby and can break parts of you dont launch it right.

I am just speaking from my own personal experience.


The Exedy units come with a chrome molly racing flywheel and a forged alum clutch cover and the entire unit has been engineered from the ground up for a racing application and high performance.

While the Exedy units are priced a bit higher (like the Hyper single which retails for about $950 - $1000) they do also include the racing flywheel as part of the package which is not included with the ACT

While the ACT unit is ceratinly a decent value priced unit - essentially it is a OEM clutch with a stronger spring.

Effective - but crude

While some drag racers report that tha ACT unit is capable for staight line applications, I find it to be a crude and ill shifting unit and more akin to something you would find on a pick up truck or camaro than a JDM sports car.

The organic material which they use in the standard ACT set up is not as advanced as the more technologically minded materials which Exedy imploys which have superior characteristics

Currently I am running the Exedy triple carbon clutch which I can suggest is prob one of the finest clutches ever made. Basically the pedal pressure is lighter than stock and the engagement is just as smooth as a stock clutch. It has held 667 wheel whp without issue and exhibits ZERO wear after 20 drag passes. The shifting is so fast you would think the car has a dog box as the clutch disks are paper thin and there is almost zero weight on the transmission input shaft.

Frankly, listening to some of these people posting about how great the ACT unit is and how fast it can go in drag racing is kind of like hearing Camaro or Mustang drivers brag about how fast their cars can go in a straight line at the drag stip on a limited budget. Even though you can build a 9 second American drag car cheaply - I still would prefer to stick with my more technologically advanced and more multi faceted EVO.

In choosing a clutch for my car - the price tag and how fast you can go with it in drag racing are not my only concerns
Amen to that.

But seriously, althoguh the ACT probsbly is the best bang for the buck. The Exedy is a much smoother, effective and more enjoyable clutch.

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Old Nov 11, 2004 | 06:59 AM
  #114  
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Don't forget to adjust the pedal engagement when installing the ACTs either... they can shift like ***.
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Old Nov 11, 2004 | 07:15 AM
  #115  
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The thing that is not being considered here is the fact that 95% of us who will need a clutch upgrade soon have cars that run high 11s to 12.x. For the 400whp range, there is no way in the world I'd spend $3000 on a freaking clutch. For that money, I could get an ACT clutch and have enough cash left over to get a rocking suspension.. or even a decent little project car. $3k for a clutch is completely absurd for 19 out of 20 of us.
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Old Nov 11, 2004 | 07:46 AM
  #116  
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Originally Posted by DynoFlash
I can say from experince in driving over 400 evos in the past year that the ACT unit while a decent value priced set up is not in the same leauge as the Exedy units

The ACT does not disengage or shift as quickly as any of the exedy units

The ACT uses a stock stamped steel Evo pressure plate upgraded with a stronger spring which results in a much harder pedal pressure. This stock unit that ACT starts with is designed and supplied by Exedy as Exedy holds the exclusive patent for the clip style release bearing attachment. Exedy is a huge company which also produces all the OEM cluthces for Subaru and the Evo.

Every time I drive an evo with a ACT its NOT enjoyable. They have a harsh feeling and compared to the much superior Exedy units it takes something away from the car. Allow me to qualify this by stating that I am referring to the ACT unit with the Organic disk.

The ACT with the 6 puck that is used in high whp applications is grabby and can break parts of you dont launch it right.

I am just speaking from my own personal experience.


The Exedy units come with a chrome molly racing flywheel and a forged alum clutch cover and the entire unit has been engineered from the ground up for a racing application and high performance.

While the Exedy units are priced a bit higher (like the Hyper single which retails for about $950 - $1000) they do also include the racing flywheel as part of the package which is not included with the ACT

While the ACT unit is ceratinly a decent value priced unit - essentially it is a OEM clutch with a stronger spring.

Effective - but crude

While some drag racers report that tha ACT unit is capable for staight line applications, I find it to be a crude and ill shifting unit and more akin to something you would find on a pick up truck or camaro than a JDM sports car.

The organic material which they use in the standard ACT set up is not as advanced as the more technologically minded materials which Exedy imploys which have superior characteristics

Currently I am running the Exedy triple carbon clutch which I can suggest is prob one of the finest clutches ever made. Basically the pedal pressure is lighter than stock and the engagement is just as smooth as a stock clutch. It has held 667 wheel whp without issue and exhibits ZERO wear after 20 drag passes. The shifting is so fast you would think the car has a dog box as the clutch disks are paper thin and there is almost zero weight on the transmission input shaft.

Frankly, listening to some of these people posting about how great the ACT unit is and how fast it can go in drag racing is kind of like hearing Camaro or Mustang drivers brag about how fast their cars can go in a straight line at the drag stip on a limited budget. Even though you can build a 9 second American drag car cheaply - I still would prefer to stick with my more technologically advanced and more multi faceted EVO.

In choosing a clutch for my car - the price tag and how fast you can go with it in drag racing are not my only concerns

ok so if the exedy is such an awesome clutch....why did mine last 8,000 miles, and exactly 8 launches

WHAT IS UP WITH THAT CRAP
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Old Nov 11, 2004 | 07:58 AM
  #117  
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Originally Posted by Rez90
ok so if the exedy is such an awesome clutch....why did mine last 8,000 miles, and exactly 8 launches

WHAT IS UP WITH THAT CRAP
The Exedy Twin Cerametallic that you have cannot handle the power your making while drag racing it.
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Old Nov 11, 2004 | 08:18 AM
  #118  
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so why does Exedy claim it will handle slipping and over 600 foot/lbs of torque
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Old Nov 11, 2004 | 08:24 AM
  #119  
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It does not. The only clutch they have that will handle anywhere near that while being drag raced is the new Triple that they offer. They have a regular triple and a triple heavy duty clamp load.
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Old Nov 11, 2004 | 08:30 AM
  #120  
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Originally Posted by blitz118
Do you have any personal experience with the RPS cutch besides what you've read? Do you have one in your car? Have you driven or raced with one?
For $3,000 why not just get a Tilton clutch that has been proven to work?
RPS Clutch In Action

Video of Clutch in action

Chris
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