Exploded Spec Stage 5 clutch, beware.

[Krister]

Two local board members installed Spec Stage 5 clutches in their 2JZ / R154 swaps. They had the same outcome, the clutch exploded on both cases and on both broke the bellhousing. Both had under 400 miles on their clutches. Here's some pics of the carnage:

 

[Poodles]

Broken straps...typical failure point I've seen.

 

[gaboonviper85]

LOL....that sucks...

Till try not to be an ass....I recomend a multi-disk clutch next time..

 

[Krister]

LOL....that sucks...

Till try not to be an ass....I recomend a multi-disk clutch next time..

Both will be upgrading to multi-disk clutches.

Still.. what a piece of shit clutch. I had no problem with my Spec Stage 3, but looks like the Stage 5 has some issues.

 

[Poodles]

No, it's not just Spec...

This design is not meant to handle the amount of abuse people put it though, the straps are DEFINATELY the weak point in the design.

Add in non-sprung hubs on the disk, tons of power, and hard shifting, and somehting is bound to give.

 

[gaboonviper85]

it didnt hurt the splines on the transmission shaft did it?.....id test the shaft with a dial indicator to make sure it didnt get bent.....something like this i could see fucking up a transmission.

 

[Krister]

Here are the pics of other Stage 5 clutch. The straps have already been bored out:

 

[gaboonviper85]

i see rust....did you not put a light coat of grease on the splines on the input shaft on the trans??

if you didnt...next time put some on.

 

[annoyingrob]

i see rust....did you not put a light coat of grease on the splines on the input shaft on the trans??

if you didnt...next time put some on.

That's from him crying when he realized he needed to find another 1JZ bellhousing.

 

[gaboonviper85]

must be kicking themselves in the ass when the spec clutch is almost $1000 and the multi-disks are like $1200....then the spec blows up and does $300 in damage....

 

[annoyingrob]

Whre are you finding 1JZ multi-disc clutches for $1200?

 

[2jzmk3]

No, it's not just Spec...

This design is not meant to handle the amount of abuse people put it though, the straps are DEFINATELY the weak point in the design.

Add in non-sprung hubs on the disk, tons of power, and hard shifting, and somehting is bound to give.

i agree the rps and act have the same issues.

Two local board members installed Spec Stage 5 clutches in their 2JZ / R154 swaps. They had the same outcome, the clutch exploded on both cases and on both broke the bellhousing. Both had under 400 miles on their clutches. Here's some pics of the carnage:

how much power are the cars making? 400 miles, what were you doing, they say 500 miles break in period to heating up and cooling down for the metal to cycle..

 

[gaboonviper85]

Whre are you finding 1JZ multi-disc clutches for $1200?

tried to edit that but the forum went down for awhile in the morning...gave up and forgot to fix it.....found multi-disks for $1600 ish on one of our vendors site don't know for what motor though.

 

[HommerSimpson]

yea...... what kinda HP ? Im preping for a 700r4 myself..

 

[gaboonviper85]

i agree the rps and act have the same issues.



how much power are the cars making? 400 miles, what were you doing, they say 500 miles break in period to heating up and cooling down for the metal to cycle..

break-in has nothing to do with temp cycleing the metal.....FYI

Even if they took it baby soft on the clutches for the 500 around town stop and go miles....the clutches would have still failed under there driveing style.....and by the looks of it there style is a whole lot of clutch dumping!

 

[935motorsports]

I'd be asking SPEC for some help on this one.

 

[Quin]

I'd be asking SPEC for some help on this one.

Hi, I didn't follow break in procedure and in fact did the opposite and your clutch blew up. HALP

:sarcasm:

 

[gaboonviper85]

Hi, I didn't follow break in procedure and in fact did the opposite and your clutch blew up. HALP

:sarcasm:

Kinda sucks that this result isn't from not breaking in the clutch...would have failed anyway....but spec will not cover this under warranty....sucks for them I guess.

 

[chevyeater]

I don't think any clutch company covers broken straps under warranty. They would go bankrupt...

 

[gofastgeorge]

Glad that I bought a Quarter Master twin plate........
I had talked to SPEC, but they didn't convince me.

And no, it is definately NOT a bolt-on.
I am having to get my billet steel flywheel machined to accept it.