Exedy Twin Disc Sucks My White A$$
Originally Posted by AMS
Some of the guys are having trouble grinding gears at high RPM shifts because of this. I'm not ragging on ACT but myself and others have seen this happen also. Jeff, do you have any insight on this?
-Martin
-Martin
We've never had that problem but I've talked about it with Buschur and Dirk from ACT. They both described what you talk about but I've never experienced it first hand. We almost always use a Fidanza flywheel but I can't see how that would make a difference. I know they made some changes to the plates but I'm not sure when that was. He was showing be some parts at SEMA and telling me how they now bend the spring differently but I had other stuff on my mind.
btw, your evo looked good at the show. When are you going to spray it again?
-jeff
Originally Posted by TurbotrixRacing
I never compared the cars, you did. I thought we were talking about evos, you brought up the supra as if to say "if it works in an supra it will work in an evo." It doesn't work in his supra so does that mean it won't work in an evo? No idea, you can't compare the two cars. How about trying it in someones car before you make it out to be the best thing ever invented.
-jeff
-jeff
Last edited by Geo@EvoStore; Nov 11, 2004 at 03:47 PM.
The person that originally made this post has already decided on a clutch. I will let him come in here and say what he decided to use. After that it has been very informative. It looks like some people have had good luck with certain brands and some people have had the opposite. Pretty much everybody can agree that the ACT with 6 Puck can hold that kind of power. I think the question is will the full weight high powered evos see the same drivetrain problems the DSM guys where having when they tried using 6 puck solid hub(yes I know a few had success, many did not)? If it can hold the power and not break drivetrain parts then look no further.
Originally Posted by Geo@EvoStore
No I did not. You need to re-read and see that I did not start that discussion. Simply mentioned that to give history on the company. Never said if it worked on this car then it will definately work on another car.
-jeff
Originally Posted by Geo@EvoStore
It looks like some people have had good luck with certain brands and some people have had the opposite. Pretty much everybody can agree that the ACT with 6 Puck can hold that kind of power. I think the question is will the full weight high powered evos see the same drivetrain problems the DSM guys where having when they tried using 6 puck solid hub(yes I know a few had success, many did not)? If it can hold the power and not break drivetrain parts then look no further.
-jeff
I went through this choice just before. It seems every clutch company has atleast a few users that had issues. Not one clutch that is widely used has a perfect record.
so If there are chances of something being screwed up either way. Id take the cheaper way. Im way less pissed to ruin a $500 clutch, than to trash a $1500 to $3000 clutch.
so If there are chances of something being screwed up either way. Id take the cheaper way. Im way less pissed to ruin a $500 clutch, than to trash a $1500 to $3000 clutch.
Originally Posted by AMS
One thing I did notice on some of the ACT clutches we installed here is that if you have it in first gear and the clutch all the way in, rev it to 7K and it will start engaging the clutch. Some of the guys are having trouble grinding gears at high RPM shifts because of this. I'm not ragging on ACT but myself and others have seen this happen also. Jeff, do you have any insight on this?
-Martin
-Martin
Hey Jeff, not to bastardize this thread...but you are the guy doing all the tranny rebuilds, right? I live RIGHT down 27, but haven't had the time or the guts to go wring my heart out looking at all the cars at the shop (mines dirty, haha). What exactly is there to be done to get an Evo 8 tranny to stop grinding its gears "(the 5th gear syncro problem). Also, why would 1st gear, and just 1st gear WHINE like crazy?
Sorry for interjecting there guys.
Sorry for interjecting there guys.
Originally Posted by DynoFlash
Few people realize or know that Exedy makes its own upgraded performance clutch version with an upgraded stock clutch cover and upgraded disck. Exedy has stages 1 through 4. For a clutch that competes with ACT you really need to compare the Exedy stage 1 and 2 - not the tripple which is a stage 3 or the carbon triple which is a stage 4.
Can you fill us on on what the prices are for the Stage 1 and 2?
Can you fill us on on what the prices are for the Stage 1 and 2?
I have found that most if not all problems with the ACT or RRE X clutch (virtually the same) have been due to not properly adjusting the pedal travel. There is no way to compare a DSM ACT clutch to an Evo style ACT clutch-totally different beasts. In my experience I can vouch for the ACT to be the BEST setup for any Evo with under 400whp. I have installed nothing but the street disc however. I recently had my RRE clutch wear down and begin to slip after making way over 450whp. I am now going to try the 6 puck ACT disc and see how it all turns out. You can see that the 6 puck will hold the power, the question is how abusive it will be on the drivetrain. No matter how aggresive it will be it is after all up to the driver to control the abuse. You drive like an animal expect to pay up, you drive with awareness and it should be fine. I can't see how in the world this 6 puck matted with a 3000lb plate will ever slip, well see. Never the less, the ACT is the clutch I recommend. Cheapest, durable, easy to drive, and basic. Let the big boys with 600+whp use the exotic 3 disc setups, beautiful pieces of work, but also very expensive.
Gil-superz
Gil-superz
Originally Posted by feldguy
Hey Jeff, not to bastardize this thread...but you are the guy doing all the tranny rebuilds, right? I live RIGHT down 27, but haven't had the time or the guts to go wring my heart out looking at all the cars at the shop (mines dirty, haha). What exactly is there to be done to get an Evo 8 tranny to stop grinding its gears "(the 5th gear syncro problem). Also, why would 1st gear, and just 1st gear WHINE like crazy?
Sorry for interjecting there guys.
Sorry for interjecting there guys.
-jeff
Act 6 puck all the way
I would have to say that i would go with what is in the fastest evo 8 TurboTrix's,If the act 6 puck can hold the power of the fastest evo 8,With jeff ripping 1.5 60 fts then it will be enough for me.Anything more is a waste of money.I dont care if it was made of kevlar,carbon,whatever.You have to heat them up before you launch.If you dont heat them up enough you will blow the launch.And they chatter like there's a knock in the motor.
Originally Posted by feldguy
Hey Jeff, not to bastardize this thread...but you are the guy doing all the tranny rebuilds, right? I live RIGHT down 27, but haven't had the time or the guts to go wring my heart out looking at all the cars at the shop (mines dirty, haha). What exactly is there to be done to get an Evo 8 tranny to stop grinding its gears "(the 5th gear syncro problem). Also, why would 1st gear, and just 1st gear WHINE like crazy?
Sorry for interjecting there guys.
Sorry for interjecting there guys.
I believe if im not mistaken have seen this before ..as jeff said, just give keith a call
mark
turbotrix
Yesterday I recieved this e-mail from Bernie Solomons, head of Exedy USA, and he requested that I post it to the forums. I think it's only fair to get a response from who the complaint is actually direct towards, and I feel t show that Exedy stands behind their product 110%.
<<We at Exedy; are amazed that the original guy that had a problem with an Exedy clutch, claiming the clutch pedal went down to the floor does not realize the problem is hydraulic. The diaphragm spring, in this case, cannot collapse upwards as this unit is a patented pull type Exedy clutch, so if the spring collapsed, he wouldn't have had described the problem as he has. In any event I think he should reserve bagging the Exedy product until he took the clutch out.. He could have phoned the distributor who sold him the clutch, Exedy or me for help & advice. In this case Exedy would
have UPS the clutch pack to the Detroit HQ / plant for further evaluation & would have had it replaced if a 1 million to 1 chance if it was faulty. This would be at no charge what so ever.
NOTE: Only EXEDY offrer's a pull clutch other brand's [only sell] a push
type clutch for the EVO.
We are a $ billion company, supplying drivetrain & automotive clutches to all 11 vehicle manufacturers in Japan and our Detroit plant also supplys clutches to GM & Ford. 99% of Hondas made in USA have OE clutches from our Detroit plant. For your information, to mention the quality of our clutches, we cannot afford to make a
faulty part, if we do and a part happens to be faulty and is installed into an OEM produced vehicle, which in turn stops the production line, the vehicle manufacturer fines us something like $8000 per minute... As far as sports clutchs are concerned, our sports division, has a 100% lift / disengagement robotic check, thereafter a visual 100% check is also performed. Our sports clutch carbon technology has been used by Ferrari Formula 1 racing team. Our advanced engineering & technology is carried out in a building that just cost us $50M US. Where actual simulated tests are carried out on sports product, far beyond the imagination of road or drag track test.
In the carbon field we are world leaders in this technology. We were the first to bring carbon clutches to the average consumer / racer in the street. I would like to remind you , it is our opinion, from tests carried out, carbon steel clutches of our design, last far longer than carbon carbon. ( ref-:Web chart ) Our development of carbon clutches in design are far in advance of some companies making them in USA due to the light weight & not having the carbon riveted onto a heavy clutch disc that has no advantage in inertia at all. You might as well buy our cerametallic type applications
which would compare same as the inferior designs offered in the market. Objective of a carbon clutch is low inertia & long lasting. Torque rating remains approx. the same as a cerametallic system. Our 600 engineers working for Exedy world wide are commited to quality & advanced engineering since 1923
Would appreciate if you could help the guy who mouthed off, getting him to contact you. As a matter of interest I would like to evaluate his clutch at no cost to him. We will pay the freight UPS... If faulty I will replace the whole unit. He need not worry about repairing it for $400 like others brag.
I would like to take this opportunity for you to thank all the EVO guys out there who support our sports clutch program. I will promise you bigger & better things next year.
>>
So Rez90 - Contact ME on Monday (MattGold@Motovicity.com) and we'll get your clutch into Exedy and hopefully leave you with a better impression of the Exedy product.
As for everyone else out there, this should be a good lesson - If you have a problem with a product, try contacting the manufacture first, instead of taking it to the internet counsol of judges first.
<<We at Exedy; are amazed that the original guy that had a problem with an Exedy clutch, claiming the clutch pedal went down to the floor does not realize the problem is hydraulic. The diaphragm spring, in this case, cannot collapse upwards as this unit is a patented pull type Exedy clutch, so if the spring collapsed, he wouldn't have had described the problem as he has. In any event I think he should reserve bagging the Exedy product until he took the clutch out.. He could have phoned the distributor who sold him the clutch, Exedy or me for help & advice. In this case Exedy would
have UPS the clutch pack to the Detroit HQ / plant for further evaluation & would have had it replaced if a 1 million to 1 chance if it was faulty. This would be at no charge what so ever.
NOTE: Only EXEDY offrer's a pull clutch other brand's [only sell] a push
type clutch for the EVO.
We are a $ billion company, supplying drivetrain & automotive clutches to all 11 vehicle manufacturers in Japan and our Detroit plant also supplys clutches to GM & Ford. 99% of Hondas made in USA have OE clutches from our Detroit plant. For your information, to mention the quality of our clutches, we cannot afford to make a
faulty part, if we do and a part happens to be faulty and is installed into an OEM produced vehicle, which in turn stops the production line, the vehicle manufacturer fines us something like $8000 per minute... As far as sports clutchs are concerned, our sports division, has a 100% lift / disengagement robotic check, thereafter a visual 100% check is also performed. Our sports clutch carbon technology has been used by Ferrari Formula 1 racing team. Our advanced engineering & technology is carried out in a building that just cost us $50M US. Where actual simulated tests are carried out on sports product, far beyond the imagination of road or drag track test.
In the carbon field we are world leaders in this technology. We were the first to bring carbon clutches to the average consumer / racer in the street. I would like to remind you , it is our opinion, from tests carried out, carbon steel clutches of our design, last far longer than carbon carbon. ( ref-:Web chart ) Our development of carbon clutches in design are far in advance of some companies making them in USA due to the light weight & not having the carbon riveted onto a heavy clutch disc that has no advantage in inertia at all. You might as well buy our cerametallic type applications
which would compare same as the inferior designs offered in the market. Objective of a carbon clutch is low inertia & long lasting. Torque rating remains approx. the same as a cerametallic system. Our 600 engineers working for Exedy world wide are commited to quality & advanced engineering since 1923
Would appreciate if you could help the guy who mouthed off, getting him to contact you. As a matter of interest I would like to evaluate his clutch at no cost to him. We will pay the freight UPS... If faulty I will replace the whole unit. He need not worry about repairing it for $400 like others brag.
I would like to take this opportunity for you to thank all the EVO guys out there who support our sports clutch program. I will promise you bigger & better things next year.
>>
So Rez90 - Contact ME on Monday (MattGold@Motovicity.com) and we'll get your clutch into Exedy and hopefully leave you with a better impression of the Exedy product.
As for everyone else out there, this should be a good lesson - If you have a problem with a product, try contacting the manufacture first, instead of taking it to the internet counsol of judges first.
Who said the clutch was faulty? I think we are all just angry that a $1400+ clutch was advertised much differently not so long ago when these units were purchased then they are now. Nobody told us these clutches can't handle drag racing, nobody told us they are only good for 480hp(which by personal experience I suggest they change to a lower number). We were just told this would be the last clutch you would ever need.
Also who really has the time or the resources to have their car down while the clutch is being evaluated? I can imagine how long that would take.
Also who really has the time or the resources to have their car down while the clutch is being evaluated? I can imagine how long that would take.


