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What clutch to go with t78 conversion?

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Old Dec 30, 2004 | 09:46 AM
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What clutch to go with t78 conversion?

Hey all,

Gonna be ordering my greddy t78 conversion soon, what clutch should i go for, needs to hold around 450bhp

I like the look of the ACT clutch range, can anyone recomend one to go for?

Or are there other makes out there that are better value for money.

Cheers,

Dan!!
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Old Dec 30, 2004 | 10:25 AM
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Exedy makes a very nice unit.
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Old Dec 30, 2004 | 11:06 AM
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I'm interested in the lightweight flywheel and tilton clutch that mazdatrix sells.
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Old Dec 30, 2004 | 04:39 PM
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Ive had some bad reports of exeddy clutch's not lasting too long.........dunno if anyone has had any probs with theirs?

Theres been a few of the honda boys here in the UK running them, but have lnot lasted, or are not upto the given spec quoted by exeddy.


Dan!!
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Old Dec 30, 2004 | 05:00 PM
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89-92... but it should work on a FD provided the correct counter weight. They have a heavy 21lb Flywheel and a light 9.5lb flywheel.

RACE FLYWHEEL/CLUTCH 86-92 TB 9.5# DOUBLE 12633 $949.00
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Old Dec 31, 2004 | 08:48 AM
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Looks like a good setup......... not bad for the money either considering its the flywheel aswell.

Just need a clutch tho, but thanks for showing that,


Cheers,

Dan!!
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Old Dec 31, 2004 | 11:51 AM
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i had an ACT xtreme street/strip combo in mine with a t78. it held great and still allowed me to slip it when taking off. a lot of the better clutches out there are more on/off
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Old Dec 31, 2004 | 11:58 AM
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Originally Posted by spoolin93r1
i had an ACT xtreme street/strip combo in mine with a t78. it held great and still allowed me to slip it when taking off. a lot of the better clutches out there are more on/off
I'm pretty sure this is what I'll be using because I really like ACT's products that I've used before and specifically their full face clutch plates hold well, yet still slip enough not to shudder when taking off.

I havn't found anyone with feedback on the tilton system yet.
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Old Dec 31, 2004 | 12:32 PM
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I am in the same boat right now. I finished my single set up and my ACT clutch let go (only 10k on it) But had over 100 passes at the track on it.. So I am trying to decide between the excedy and the spec stage III. I can get the excedy single for $875 plus counter weight but the Spec is only $500. Of course the excedy includes a flywheel but I do not need it.... Any other input on the SPEC?
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Old Dec 31, 2004 | 12:59 PM
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personally i think the ACT units are not that good for our pull type clutches we use ...besides the exedy multi dsc... take a look at RPS and Clutchmasters ... of course i get my Clutchmasters clutches from www.a-spectuning.com


good luck!
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Old Dec 31, 2004 | 01:29 PM
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When I talked to Exedy @ JGTC, they said that their clutches WILL NOT LAST on the street. They are intended for track(no slipping, and relatively short life). This was two seperate visits to the booth. For Road race they recommended the twin plate. I am going to run an ACT Extreme with a "custom" Bronze full face disc. Carl

Last edited by Carl Byck; Dec 31, 2004 at 01:34 PM.
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Old Dec 31, 2004 | 01:56 PM
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From: Defuniak Springs, FL
Originally Posted by Carl Byck
When I talked to Exedy @ JGTC, they said that their clutches WILL NOT LAST on the street. They are intended for track(no slipping, and relatively short life). This was two seperate visits to the booth. For Road race they recommended the twin plate. I am going to run an ACT Extreme with a "custom" Bronze full face disc. Carl
You do intend to of course explicate your sourcing of said bronze "custom" full face and what type of engagement you expect from it?

Please
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Old Dec 31, 2004 | 05:57 PM
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i swung by e-nonvative's shop while i was in cali and was checking out the new OS Giken catalog. they've got a new twin plate with an aluminum cover which actually holds more torque than the other one... 1100 or some KG... only bad thing is that the clutch and flywheel combo is like 1600 and then you need to spend like 400 on the conversion to a push type.... but thats what i want next.

oh yea, its got sprung discs too.
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Old Dec 31, 2004 | 08:08 PM
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i have 2500 miles on my exedy hyper single and it looks like it just came out of the box. kevin fujiyoka is the head tech engineer in the usa (based at exedy's HQ in mich) and he says the hyper single was designed for street and track. based on my experience it delivers.

howard coleman
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Old Jan 2, 2005 | 12:40 AM
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Originally Posted by f1blueRx7
You do intend to of course explicate your sourcing of said bronze "custom" full face and what type of engagement you expect from it?

Please
No big secret, I run the same disc type on my Supra. In fact there are quite a few ~ low 10 sec Supras running the same set up. It is a disc sold by Horse Power Freaks("HPF DISC"). My only concern is that in the Supra you need to run the stock flywheel (heat sink) or the disc will weld itself to the flywheel(drag racing only). It slips like stock, rarely chatters, never overheats, and can handle ~800ftlbs on a Supra. We shall see if it welds itself to the light flywheel road racing, but I doubt it. They also sell a "feramic" disc, but I do not know if there is an FC application. This is one of a couple single discs that are used by the Supra guys that withstand ~50-80 9-10 sec passes. If it starts to chatter, you simple feed in clutch at ~6000rpm, and resurface the flywheel Anyway, I was certainly suprised to hear Execedy say their clutches were not appropriate for the street. Carl
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Old Jan 2, 2005 | 12:41 AM
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Do figure a new flywheel (or friction surface) with each clutch change.
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Old Jan 2, 2005 | 09:58 AM
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I've had pretty good experience with the clutchmasters disk, the stage 3 in particular, no slip, never has and has held under some pretty big power..max
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Old Jan 2, 2005 | 12:12 PM
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I daily drive my Exedy Hyper Single. I probably have 3K on her so far. I'll report back if there are major issues or the clutch goes out sooner than expected. Works very well when it's "up to temp" even on the street. It's nasty when cold, first thing in the morning or if the car's been sitting for hours on end. Once it gets a bit of heat, no worries. Normal driving provides enough heat to make the shifts buttery.
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Old Jan 3, 2005 | 03:36 PM
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Danny boy,

OS Giken twin plate clutch will do the trick nicely, although costs a bit ????
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Old Jan 4, 2005 | 04:59 AM
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Thanks for the replies guys.

I think i will look into a street/race ACT clutch kit.

Gurj, yea those OS Giken twin jobbies are mega mega money....so a bit out my league

Althought ross at dragon motorsport has 2 second hand ones for £600 .......hmmmm

Dan!!
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Old Jan 4, 2005 | 07:13 AM
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If the ones Ross has are in good condition then possibilities arise no?? Heavy clutch though for everyday driving???

You keeping it as a street car or changing it to a drag car??
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Old Jan 4, 2005 | 08:29 AM
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Yea, keeping it as street car still, so good point about that...i dont want my left leg to become twice the size of my right
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Old Jan 4, 2005 | 11:08 AM
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FWIW, my ACT Extreme did not hold up well at the drag strip but did last about 60K miles on the street. It would slip however, and I'm convinced it had been doing so for the better part of a year (modestly) with the single turbo and then it refused to hold the power at all. I'd take a look at the RPS or go with that Horsepowerfreaks.com disk and your pressure plate of choice.
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Old Jan 4, 2005 | 11:33 AM
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Anyone tried Tilton twin og tripple disc clutches?? I have very good experience with the tripple disc racing unit for both street and strip use. Not on a rotary though, but a 5-cylinder 20v audi dynoing 611hp at the flywheel. I have a twin disc rally-unit to be put in my 1st gen with 13BT.

Regards,
Frode
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Old Jan 5, 2005 | 06:33 AM
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Just out of interest Dan will the car be ready for Rotorstock you think????

If so you gonna run it i take it buddy ???

Gurj
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