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Old Jul 29, 2010 | 12:00 PM
  #9151  
BluesunsXIV's Avatar
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From: Philly
Pete do you still want the wideband?
Old Jul 29, 2010 | 12:02 PM
  #9152  
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Originally Posted by grillpt
IDK dude, a lot of those miles are highway too.

Everyone's testimony seems to contradict what your saying regarding the mileage, at least when it comes to the Exedy...

Truth is, it may not be the disc, and if that the case then its hard to blame the clutch. Maybe your trans is bad...?
I ruled out the trans pretty quick, although it is in the back of my mind. I fiugre, the the trans was going, I would have started to hear gears grinding during shifts. My gears have never grinded. Yes, alot of my miles are highway, but I have alot of city miles also. Whatever, i dont care, this thing is going to be better again.

Most of my parts will be here this weekend or early next week.

Rebuild kit, TOB, and AMS trans mount courtesy of Mark and Mike of EM2 Performance. These guys run a great shop.

Clutch fork stop, new clutch line (full line) courtesy of Emery from STM. Free shipping from STM FTW! Also picked up the STM uicp while I was at it. (Marc, I will bring yours to the next autox)

Also ordered new OEM fender liners and all the needed clips from Mitsparts.com (Cherry Hill Triplex)... $9.00 flat rate shipping ftw!

Last edited by chu; Jul 29, 2010 at 12:04 PM.
Old Jul 29, 2010 | 12:53 PM
  #9153  
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Originally Posted by BluesunsXIV
Pete do you still want the wideband?
Does that have the digital readout? It looks like its only the analog (needle only) gauge...
Old Jul 29, 2010 | 12:55 PM
  #9154  
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Originally Posted by grillpt
Does that have the digital readout? It looks like its only the analog (needle only) gauge...
Can't have both....
Old Jul 29, 2010 | 01:00 PM
  #9155  
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Originally Posted by grillpt
Does that have the digital readout? It looks like its only the analog (needle only) gauge...
Analog =/ so thats a no then? Ill put it for sale on my thread then
Old Jul 29, 2010 | 01:03 PM
  #9156  
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Originally Posted by chu
Marc, I was banking on experiences like yours, so I didn't think my clutch would ware that quick. I think Petey has like 50k on his, and he beats his car at the track all the time. I don't drag race, so I think its just my driving style for the most part and the heavy traffic I drive in all the time. I also started to launch at the autox. Whaever, I don't care for the ware. I just hope thats the case and not a bad tranny.
There are others besides me who have gone long distances with twin discs. I really think its a combination of several things, but the operator is the most important. There are people who kill clutches in a couple hundred miles cause they don't know what to do.

You also have to remember that I'm not making as much TQ as you are, that is a factor also. I also think your problem is more of a mechanical wear issue on other components, not the discs/clutch... a problem like you're having in my limited experience usually points something mechanical failing either in the trans or with the hydraulics.

Originally Posted by BBS
A disadvantage to a twin disc is that since a twin disc clutch has 4 wear surfaces, a twin disc if it's slid a lot as in ordinary driving, experiences accelerated wear and a rapid drop off in clamp load from the pressure plate with subsequent slipping. This sensitivity to wear can make rebuilding a twin disc in a daily driver an annoyingly frequent occurrence. - Mike Kojima

The man is the biggest nerd so I just believe what he says.
I don't agree with that statement. Here is why; two discs = twice the surface area to spread the wear around on. Thats the whole reason why they are prefered for a high HP application, because in order to hold all the TQ you need either A: more clamping force, b: more surface area on the discs, C: a more aggressive disc material, or D: a combination of all 3.


Originally Posted by daisaw1219
my twin disc oficially lasted 4k miles or about 2 months for the 2nd time in a row with absolutely no launching or abuse. NEVER BUY A SPEC CLUTCH!!!!!!!

the carbonetics one i had before, lasted about 55k miles with daily abuse.
Ever since I heard about SPEC FW's exploding on people I've kept clear of their products.

I have a buddy who HATES his carbonetics clutch with a passion. Hes only making like 400wtq and its already slipping...


Originally Posted by grillpt
IDK dude, a lot of those miles are highway too.

Everyone's testimony seems to contradict what your saying regarding the mileage, at least when it comes to the Exedy...

Truth is, it may not be the disc, and if that the case then its hard to blame the clutch. Maybe your trans is bad...?
If you're talking to me I dunno what to say... I'm not exagerating my miles, or the use. I had the OEM clutch replaced @ 45k (by the dealer no less) with an exedy twin. Drove on that till like 88k and had Adam throw a rebuild kit in it when I did all my subrame bushings. I'm currently @ 110k as of last Sunday.

You guys know how I drive, I probably race more than anyone on here, but I like to think I'm easy on parts. I never ride the clutch, always rev match on downshifts and I know how to launch so it doesn't slip too much and overheat. If the clutch didn't work so well I wouldn't still be using it and I would be recommending it.
Old Jul 29, 2010 | 01:40 PM
  #9157  
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Damn Marc, that could have been +4 to your post count...just saying.
Old Jul 29, 2010 | 01:46 PM
  #9158  
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Originally Posted by AlwaysinBoost
I don't agree with that statement. Here is why; two discs = twice the surface area to spread the wear around on. Thats the whole reason why they are prefered for a high HP application, because in order to hold all the TQ you need either A: more clamping force, b: more surface area on the discs, C: a more aggressive disc material, or D: a combination of all 3.
I'm just the messenger! But apparently the main reasoning behind multi plate clutches is rotational inertia. You could make a single plate clutch that could hold a crap ton of tq but itd be one heavy *** disc. It's twice the surface area to spread around but the discs are much thinner than normal single plate clutches. I'm looking for the article that explained the engineering behind multi plates. Its well written and makes sense. Give me a few minutes.
Old Jul 29, 2010 | 02:00 PM
  #9159  
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Originally Posted by boostedtres
i may have to talk to andy about those cf exhaust shields. may be a nice present to the pops for the new car. those wheels look good, just curbed a bit. going to PM him for pricing I guess.
Andy is BBS

Nick is Bluegaysun or something.
Old Jul 29, 2010 | 02:01 PM
  #9160  
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From: Philly
Originally Posted by dek0026
Andy is BBS

Nick is Bluegaysun or something.
yeah we already cleared this up, thx dan
Old Jul 29, 2010 | 02:04 PM
  #9161  
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I know, I wasn't trying to sound harsh or anything, just giving you my unwanted opinion.

I kinda understand the engineering behind it (at least I think I do). The smaller discs are easier to spin compared to one larger ones due to less rotating mass. That should translate into faster shifts and quicker accel/decel... I remember all that crap from when I bought mines back in 05
Old Jul 29, 2010 | 02:08 PM
  #9162  
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Originally Posted by AlwaysinBoost
I know, I wasn't trying to sound harsh or anything, just giving you my unwanted opinion.

I kinda understand the engineering behind it (at least I think I do). The smaller discs are easier to spin compared to one larger ones due to less rotating mass. That should translate into faster shifts and quicker accel/decel... I remember all that crap from when I bought mines back in 05
I was seriously going to shell out the 1k premium over my exedy organic JUST for the purple pressure plate. Im such a tool
Old Jul 29, 2010 | 02:55 PM
  #9163  
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I would be surprised if it was the disc, just doesn't seem like much use. I always thought the exedy would last longer than that, I've heard of the others not, tilton, spec...

You'll figure it out.
Old Jul 29, 2010 | 03:35 PM
  #9164  
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Originally Posted by chu
Doesn't matter, I still like it alot. Just becasue it's expensive doesn't mean it is supposed to last any longer. It has been a great clutch while it lasted. I would not mind getting another one at all...thats why I'm rebuilding it. I estimate around 15k on it, both daily driving and autox'ing, maybe more. Its about average for most people with these clutches. I drive my car more than any of you, and stop and go traffic does a number on any clutch.

If you think about it, a regular clutch and a lightened flywheel already cost about $1000.

BTW, I'm not rich!
It almost sounds like you may have been driving around with the clutch preloaded..You always wanna make sure your engagement is close to the floor with theese clutches..
Old Jul 29, 2010 | 03:39 PM
  #9165  
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Originally Posted by BBS
experiences accelerated wear and a rapid drop off in clamp load from the pressure plate with subsequent slipping. - Mike Kojima
The man is the biggest nerd so I just believe what he says.
Twin disc has more friction surface area so his point is moot.. On the other hand if you wear one disc more then the other, then yes it will wear quicker, but he wasn't even close to saying that.. What he was saying applies to single disc clutches in the same way...... boom



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