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ACT clutch = ruined tranny

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Old Oct 22, 2006 | 09:57 PM
  #31  
High_PSI's Avatar
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Don't Bash the ACT, it is you. I had one for three years, adjust it PROPERLY (if you were locking out well you needed to adjust it) and then you used BG Synchro Mesh whcih is known not to work on the Evo. My act shifted happilly above 8000 RPM's.
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Old Oct 22, 2006 | 10:05 PM
  #32  
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From: College Station, TX
I will also back ACT. Had it for 20,000 miles so far, no problems... Several local friends run the ACT, also no problems... I would chalk this one up for extreme abuse or flunked install... just my 2 cents...
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Old Oct 22, 2006 | 10:09 PM
  #33  
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Originally Posted by High_PSI
Don't Bash the ACT, it is you. I had one for three years, adjust it PROPERLY (if you were locking out well you needed to adjust it) and then you used BG Synchro Mesh whcih is known not to work on the Evo. My act shifted happilly above 8000 RPM's.
instead of bg synchro mesh, wat do u use?
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Old Oct 22, 2006 | 10:58 PM
  #34  
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so did you beat the srt?
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Old Oct 23, 2006 | 02:39 AM
  #35  
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Back on topic, I have to defend the original poster. It's a pretty well known fact on other forums with more experienced membership that the stock type clutch, ACT or otherwise, will not shift well especially at high RPM. Just looking at and handling the stock or ACT clutch you can quickly spot what I now believe is the problem. The disc is HUGE and it weighs a TON. This makes a lot more work for the synchros to do. I had no trouble shifting at regular RPM, but at 8k plus I had to shift slow. This has been severely hampering my drag times ALL season. Comparing my shift times to a fellow EVOlinker is a real eye opener

I installed 8-10 ACTs on my 2g over the 5 years I raced it, and never had a problem. On the units I had some premature slippage on I found that my input shaft seal was getting oil on the disc. The DSM clutch seems to use a smaller diameter disc, and they shift fine. I don't have to tell you guys what increasing the diameter of the disc is going to do to its inertia.

I installed a 2900-3000 pound plate with an ACT stock-type disc, and had the same shifting issues as stock. With this one however I also have a hard time getting into gear when the tranny is overnight cold. I figured it couldn't be the clutch since it is temperature dependant, but more on that later. I adjusted the rod out until the engagement was RIGHT at the top of the pedal travel. It had no affect on my shifting problems, so I set it back to a very high but reasonable engagement point to prevent premature wear. I got a full year out of this clutch, with about 25k miles, weekly trips to the track where the car consistently pulled 1.6s on snow tires and on the Advans, and countless street launches. It held the power perfectly! It just wouldn't shift well. In the last few weeks it started slipping badly, and the engagement point moved itself right to the top of the travel. When I pulled the disc it was the thinnest disc I've ever pulled out of one of these cars. I DEFINITELY got my money's worth out of the clutch, as far as that goes...

Fast forward to now, just installed an Exedy Twin HD. Holy ****, what a difference. No more problems getting in gear when the car is cold, and it shifts incredibly smooth. I wish I had done this back when I put the other clutch in, but it simply was not in the budget. Looking at the discs, they are only about 6 inches in diameter, and are very light. Engagement is right in the middle of pedal travel, and is very comfortable. I have always hated the high engagement point of the ACT type clutches. No change to the pedal adjustment.

So to the point, there is no way that driving for over a year on the previous clutch forcing the tranny into gear against its will could have not worn the synchros excessively. Are they dead? Probably not. Will they live a shorter than usual life? I'm sure of it. If nothing else was changed except the clutch, and all of my problems went away, could the cause of those problems been from anything BUT the clutch, for whatever reasons?

Last edited by kjewer1; Oct 23, 2006 at 02:55 AM.
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Old Oct 23, 2006 | 02:44 AM
  #36  
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dude... i'm sure you were referring to my harsh post but look where i'm not wrong... changing the fluid and crossing your fingers does nothing.

notice you found the proper clutch for your application also... good stuff!
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Old Oct 23, 2006 | 02:49 AM
  #37  
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Originally Posted by NastyEVO
Take your douchebaggery to another forum you ****ing smartass *****. Instead of trying to help him, you talk ****. Dick.
my douchbaggery is on another forum noob and you'll find that forum to be superior to this one precisely because of my and many-others-like-me's douchebaggery.

and the FACT is that i DID give him the proper advice and there isn't actually anything WRONG with what i said. notice the above poster... exedy light weight fast shifting clutches ftw.

everyone blames their clutch but the fact is they picked it...... so who's to really blame? so if i'm a smart ***... shall i call you a stupid ***?
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Old Oct 23, 2006 | 02:58 AM
  #38  
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From: Indy
Originally Posted by alby988
instead of bg synchro mesh, wat do u use?
Keep the Diaqueen in there! The stock stuff.
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Old Oct 23, 2006 | 05:35 AM
  #39  
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Originally Posted by kjewer1
Back on topic, I have to defend the original poster. It's a pretty well known fact on other forums with more experienced membership that the stock type clutch, ACT or otherwise, will not shift well especially at high RPM. Just looking at and handling the stock or ACT clutch you can quickly spot what I now believe is the problem. The disc is HUGE and it weighs a TON. This makes a lot more work for the synchros to do. I had no trouble shifting at regular RPM, but at 8k plus I had to shift slow. This has been severely hampering my drag times ALL season. Comparing my shift times to a fellow EVOlinker is a real eye opener

I installed 8-10 ACTs on my 2g over the 5 years I raced it, and never had a problem. On the units I had some premature slippage on I found that my input shaft seal was getting oil on the disc. The DSM clutch seems to use a smaller diameter disc, and they shift fine. I don't have to tell you guys what increasing the diameter of the disc is going to do to its inertia.

I installed a 2900-3000 pound plate with an ACT stock-type disc, and had the same shifting issues as stock. With this one however I also have a hard time getting into gear when the tranny is overnight cold. I figured it couldn't be the clutch since it is temperature dependant, but more on that later. I adjusted the rod out until the engagement was RIGHT at the top of the pedal travel. It had no affect on my shifting problems, so I set it back to a very high but reasonable engagement point to prevent premature wear. I got a full year out of this clutch, with about 25k miles, weekly trips to the track where the car consistently pulled 1.6s on snow tires and on the Advans, and countless street launches. It held the power perfectly! It just wouldn't shift well. In the last few weeks it started slipping badly, and the engagement point moved itself right to the top of the travel. When I pulled the disc it was the thinnest disc I've ever pulled out of one of these cars. I DEFINITELY got my money's worth out of the clutch, as far as that goes...

Fast forward to now, just installed an Exedy Twin HD. Holy ****, what a difference. No more problems getting in gear when the car is cold, and it shifts incredibly smooth. I wish I had done this back when I put the other clutch in, but it simply was not in the budget. Looking at the discs, they are only about 6 inches in diameter, and are very light. Engagement is right in the middle of pedal travel, and is very comfortable. I have always hated the high engagement point of the ACT type clutches. No change to the pedal adjustment.

So to the point, there is no way that driving for over a year on the previous clutch forcing the tranny into gear against its will could have not worn the synchros excessively. Are they dead? Probably not. Will they live a shorter than usual life? I'm sure of it. If nothing else was changed except the clutch, and all of my problems went away, could the cause of those problems been from anything BUT the clutch, for whatever reasons?
I think you just explained my car in the cold, however I don't force it, I just ease it in as best I can
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Old Oct 23, 2006 | 05:48 AM
  #40  
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Originally Posted by evolancer04
Yeah sure, well i guess seems like alot of other people dont either. This is just an informative post so keep you kiddy comments to yourself. This is my 4th project car and i have never had clutch/tranny problems like this before. Although they were not evo's.

about 4 months ago, i had my 4th gear synco go out on my stock clutch. . it was doing the same thing that you are describing. other than that i have 55k miles on my 05 13 months on stock clutch. so i doubt that it was the act, but thanks and keep us updated
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Old Oct 23, 2006 | 06:10 AM
  #41  
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ACT shifts nice in my car no lock out or grinding at all man
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Old Oct 23, 2006 | 06:40 AM
  #42  
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I have the 6puck sprung hub and i love it!! Tranny shifts like butter, no grinding and no lock outs
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Old Oct 23, 2006 | 07:16 AM
  #43  
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no probs here......had it installed just about 1000 miles ago and the baby grabs like a mother.....i can screech all the tires 1-3 gear....i love ACT's and never had i heard of a ACT ruining a tranny until i read this thread
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Old Oct 23, 2006 | 07:17 AM
  #44  
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maybe cuase of the track runs all the time...
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Old Oct 23, 2006 | 07:55 AM
  #45  
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ACT clutches are a hit and a miss.
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