who else is using the Spec Super twin?
#62
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I tried to install mine yesterday... my TOB hit the pp fingers with about 1" gap still between the tranny and the bellhousing.... no idea how to fix this.......calling them tomrorow.
EDIT: reading this post spawned me to go take the measurements from the bellhousing both ways...
from the PP fingers to te BH face= 1.9375"
from tranny face to TOB face= 3.0"
the interference is therefore -1.0625"
this is fucked up
EDIT: reading this post spawned me to go take the measurements from the bellhousing both ways...
from the PP fingers to te BH face= 1.9375"
from tranny face to TOB face= 3.0"
the interference is therefore -1.0625"
this is fucked up
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
Last edited by Tiago; 09-30-2007 at 09:48 PM.
#63
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Originally Posted by Tiago
I tried to install mine yesterday... my TOB hit the pp fingers with about 1" gap still between the tranny and the bellhousing.... no idea how to fix this.......calling them tomrorow.
EDIT: reading this post spawned me to go take the measurements from the bellhousing both ways...
from the PP fingers to te BH face= 1.9375"
from tranny face to TOB face= 3.0"
the interference is therefore -1.0625"
this is fucked up![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
EDIT: reading this post spawned me to go take the measurements from the bellhousing both ways...
from the PP fingers to te BH face= 1.9375"
from tranny face to TOB face= 3.0"
the interference is therefore -1.0625"
this is fucked up
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
#66
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If you are tight by .0625 or so, I would contact Spec and have them do something about it. GM Spec for the air gap is .125-.150 from what I have found, so you would need to take approx. .190 off the slave. This isn't as easy as just machining down the back side as that would put you into the fluid passages in it. You would need to take it off the TOB and the part of the slave that the TOB goes over equally (.190 from each). It is possible as I had taken much more than that off mine when experimenting, but you lose the "ears" that lock the TOB to the slave and it makes assembly a bit more tricky since the TOB can fall off if the trans is tilted too far, etc.
I would run it past Spec first and see what they think, maybe between mine and the others that have been popping up, they'll just offer up a fix for it instead of you having to make your car fit the clutch.
If you don't want to go through them, another thing you can do is make a spacer to go between the trans bell housing to space the whole thing out the distance you need.
Joe
I would run it past Spec first and see what they think, maybe between mine and the others that have been popping up, they'll just offer up a fix for it instead of you having to make your car fit the clutch.
If you don't want to go through them, another thing you can do is make a spacer to go between the trans bell housing to space the whole thing out the distance you need.
Joe
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so I shouldn't have any issues with my spec twin disc LS1 install with the mcleod bellhousing. Is the 1/4 inch difference from the scatter sheild that bolts to the block or 1/4 longer dimensionto the bell housing from your experience?
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Good deal. I wish they'd have just sent me a new one, but they said I had it too long- umm, I told them the day I put it in it wasn't right lol. Oh well, at least it's resolved now and seems to work great. Pedal feels much better.
Joe
Joe
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I have it and so far, I'm not very happy with it on the street. I wanted to get feedback from others also.
I wanted a "streetable" clutch that would hold my power (~800 whp/tq) and while it does hold, it's not very streetable. The engagement is all the way at the top and is maybe 1/2" from the time it starts to grab to full engagement- making it suck on the street (a lot of hills here which REALLY sucks
). The fact that there is no travel in which to "modulate" the engagement, it makes it no more than an on/off switch. It would be nice if they had the geometry between the pedal travel and pressure plate travel better for easier engagement and better street manners. Not saying I want to slip the hell out of it all the time, but it could have better engagement points if it is intended for street use.
Anyone else using it and notice the same thing? Spec has been very cool to deal with, but I kind of wish I went Tex Exo Skel after talking with others about how they engage.
I wanted a "streetable" clutch that would hold my power (~800 whp/tq) and while it does hold, it's not very streetable. The engagement is all the way at the top and is maybe 1/2" from the time it starts to grab to full engagement- making it suck on the street (a lot of hills here which REALLY sucks
![Sad](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_sad.gif)
Anyone else using it and notice the same thing? Spec has been very cool to deal with, but I kind of wish I went Tex Exo Skel after talking with others about how they engage.
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bell to clutch : 1 13/16" trans to t.b. : 1 15/16"
Which meant the t.b. was pushing on the cluch 1/8". When you add the 1/8" air gap I need, it means I gotta come up with 1/4". I'm gona try and make a 1/4" spacer to go between the trans and bell. Hopefully that will do it. I'll let you know.
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It finally messed up Saturday night with 1,100 miles on it. The pedal got super stiff, I couldn't hardly pust it down. When it would go down, the car would still move but the clutch slipped. Took it apart and found the T.B. messed up and the fingers on the pressure plate uneven - like something was stuck between the disks. I unbolted it, didn't see anything and bolted it back up - The fingers were even then. WTF? Anyway, I measured the clearance this time.
bell to clutch : 1 13/16" trans to t.b. : 1 15/16"
Which meant the t.b. was pushing on the cluch 1/8". When you add the 1/8" air gap I need, it means I gotta come up with 1/4". I'm gona try and make a 1/4" spacer to go between the trans and bell. Hopefully that will do it. I'll let you know.
bell to clutch : 1 13/16" trans to t.b. : 1 15/16"
Which meant the t.b. was pushing on the cluch 1/8". When you add the 1/8" air gap I need, it means I gotta come up with 1/4". I'm gona try and make a 1/4" spacer to go between the trans and bell. Hopefully that will do it. I'll let you know.
Joe
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Yup. I had a feeling there would be. I think many just put it in and never checked or noticed anything wrong. Those will be the ones who start slipping prematurely and blame the clutch for not holding their power
. I told Jeremy as more miles get on them and/or more people start measuring, we'd see more popping up. GM doesn't manufacture cars 1/4" different.
I'm going to point this thread out to Jeremy. He was sure they were all good and it was just possibly the LS2's that were different. I'm sure he'd be interested in reading this.
To everyone who has an issue- contact Spec! They can't fix what they don't know is broken!!!
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I'm going to point this thread out to Jeremy. He was sure they were all good and it was just possibly the LS2's that were different. I'm sure he'd be interested in reading this.
To everyone who has an issue- contact Spec! They can't fix what they don't know is broken!!!
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I'm using the P-Trim carbon metallic. Part # SC09PT. I'll call them.
*Edit* This will be the last Spec clutch I ever buy. I just talked to Justin on the phone and he said I was the only one in the world having this problem. He said these clutches are too new and there's too many out there not having any problems even with big power. He suggested I had a hydraulic problem. I told him that I had seen on here that you (Joe) had talked to Jeremy about the same problem and others mentioned it too. He said he's been on here multiple times and that everyone on this board has a problem. I should have bought a Textralia but I had great luck with my Spec 3 so I went back against my better judgement. Never Again.
*Edit* This will be the last Spec clutch I ever buy. I just talked to Justin on the phone and he said I was the only one in the world having this problem. He said these clutches are too new and there's too many out there not having any problems even with big power. He suggested I had a hydraulic problem. I told him that I had seen on here that you (Joe) had talked to Jeremy about the same problem and others mentioned it too. He said he's been on here multiple times and that everyone on this board has a problem. I should have bought a Textralia but I had great luck with my Spec 3 so I went back against my better judgement. Never Again.
Last edited by Orange99Z; 10-04-2007 at 04:02 PM.
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I'm using the P-Trim carbon metallic. Part # SC09PT. I'll call them.
*Edit* This will be the last Spec clutch I ever buy. I just talked to Justin on the phone and he said I was the only one in the world having this problem. He said these clutches are too new and there's too many out there not having any problems even with big power. He suggested I had a hydraulic problem. I told him that I had seen on here that you (Joe) had talked to Jeremy about the same problem and others mentioned it too. He said he's been on here multiple times and that everyone on this board has a problem. I should have bought a Textralia but I had great luck with my Spec 3 so I went back against my better judgement. Never Again.
*Edit* This will be the last Spec clutch I ever buy. I just talked to Justin on the phone and he said I was the only one in the world having this problem. He said these clutches are too new and there's too many out there not having any problems even with big power. He suggested I had a hydraulic problem. I told him that I had seen on here that you (Joe) had talked to Jeremy about the same problem and others mentioned it too. He said he's been on here multiple times and that everyone on this board has a problem. I should have bought a Textralia but I had great luck with my Spec 3 so I went back against my better judgement. Never Again.
That "hydraulic problem" **** is getting old though- they pulled that with me with my stage 3 and tried it in the beginning with this one until I verified by measuring that it was 1/4" too tall. There is no possible way you have a hydraulic problem that would make it too tall. I would certainly talk to Jeremy about this as he knows the problem. Hopefully it is just a matter of Justin not knowing about them, but I admit- the "you have a hydraulic issue- try bleeding it" crap for every problem I have ever seen with a Spec is pretty annoying.
They did take care of me though, so maybe they'll do the same for you (hopefully). The only complaint I have with it is it still has a "wandering" engagement point- sometimes it will start to grab about halfway and feel like a stock clutch in it's engagement, other times it grabs all the way up like an on/off switch- kind of hard to drive it in traffic when it is different all the time lol. I honestly think the floater plate binds a bit at times making engagement vary a bit with heat and such.
I'm not unhappy with it by any means as it certainly holds my power, but for $1500, you'd expect more than that line of BS Justin fed you.
Joe
Last edited by kwiksilverz; 10-05-2007 at 05:17 AM.