SPEC Clutch pics
Thread Starter
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
SPEC Clutch pics
First let me give some background on this particular SPEC clutch and my car. Theres been a lot of folks bashing SPEC on here over the years and I'm just going to show my personal experience with them.
It's a regular old style Stage 3. It's been in my Corvette for about 2 years and was pulled out when I replaced the engine recently. Current mileage is 27,000 on the clutch. It was drag raced almost every weekend during this time and auto crossed a few times. Also driven every day to work (Washington DC traffic) when the rear end wasn't broken. It was working FINE when the motor was pulled out.
The car is a 92 LT1 6spd (ZF6). Stock LT1 with a Top Gun Fogger set on 150HP and a Corsa cat back exhaust. Stock 3.45 rear gears. Fidanza Alum flywheel. Hurst Shifter. 26X11.50 Bias Ply Mickey Thompson ET Streets.
Drag racing driving style: 5500RPM launch, 1.58-1.60 60ft times provided the stub axels didn't gernade (which they did quite frequently). To combat the rear end breakage I replaced the ET Streets with a set of 315/35R17 BFG drag radials and switched to a 4500RPM "clutch slipping" launch about a year and 15,000 miles into the clutches life. The NO2 is on a WOT switch and anyone who has used a Top Gun NO2 kit will tell you they hit HARD. With the ET streets it obviously hit as soon as the clutch was popped. With the DR's is got activated about 1/2 way through low gear once the clutch was fully engaged.
PICs
Top of PP.
Bottom of PP.
FW side of Disk.
Close up of Disk Puck.
Close up of PP surface.
Close up of TB.
There is some heat bluing of the PP surface from slipping it abuseivly at the track and driving it in traffic all the time. No real groves to speak of in the PP or FW surfaces, only the minor heat bluing. Surprisingly the Disk looks almost new and did not show much wear in reguard to the thickness as compared to a brand new one. The TB was still quite and shows a little grease was pushed out from the heat but nothing out of the ordinary for almost 30Kmiles of use/abuse.
It drove OK on the street and had pretty good street manners. It would chatter when it got hot and if you kept trying to slip it after. It took some getting use to but I easily taught my GF how to drive the car by "rolling it out" in traffic. It never slipped once on a 5500RPM NO2 induced clutch dump at the strip. Once I let all the way out it (even dragging it on the DR's) it never slipped again or on a gear change.
All in all I am very pleased with the clutch. It was replaced with a brand new one just like it. We'll see how it holds up to my new engine.
Will
It's a regular old style Stage 3. It's been in my Corvette for about 2 years and was pulled out when I replaced the engine recently. Current mileage is 27,000 on the clutch. It was drag raced almost every weekend during this time and auto crossed a few times. Also driven every day to work (Washington DC traffic) when the rear end wasn't broken. It was working FINE when the motor was pulled out.
The car is a 92 LT1 6spd (ZF6). Stock LT1 with a Top Gun Fogger set on 150HP and a Corsa cat back exhaust. Stock 3.45 rear gears. Fidanza Alum flywheel. Hurst Shifter. 26X11.50 Bias Ply Mickey Thompson ET Streets.
Drag racing driving style: 5500RPM launch, 1.58-1.60 60ft times provided the stub axels didn't gernade (which they did quite frequently). To combat the rear end breakage I replaced the ET Streets with a set of 315/35R17 BFG drag radials and switched to a 4500RPM "clutch slipping" launch about a year and 15,000 miles into the clutches life. The NO2 is on a WOT switch and anyone who has used a Top Gun NO2 kit will tell you they hit HARD. With the ET streets it obviously hit as soon as the clutch was popped. With the DR's is got activated about 1/2 way through low gear once the clutch was fully engaged.
PICs
Top of PP.
Bottom of PP.
FW side of Disk.
Close up of Disk Puck.
Close up of PP surface.
Close up of TB.
There is some heat bluing of the PP surface from slipping it abuseivly at the track and driving it in traffic all the time. No real groves to speak of in the PP or FW surfaces, only the minor heat bluing. Surprisingly the Disk looks almost new and did not show much wear in reguard to the thickness as compared to a brand new one. The TB was still quite and shows a little grease was pushed out from the heat but nothing out of the ordinary for almost 30Kmiles of use/abuse.
It drove OK on the street and had pretty good street manners. It would chatter when it got hot and if you kept trying to slip it after. It took some getting use to but I easily taught my GF how to drive the car by "rolling it out" in traffic. It never slipped once on a 5500RPM NO2 induced clutch dump at the strip. Once I let all the way out it (even dragging it on the DR's) it never slipped again or on a gear change.
All in all I am very pleased with the clutch. It was replaced with a brand new one just like it. We'll see how it holds up to my new engine.
Will
Last edited by rklessdriver; Aug 26, 2008 at 08:38 PM.
Safety Car
Joined: Oct 2008
Posts: 4,022
Likes: 30
From: Los Angeles CA
First let me give some background on this particular SPEC clutch and my car. Theres been a lot of folks bashing SPEC on here over the years and I'm just going to show my personal experience with them.
It's a regular old style Stage 3. It's been in my Corvette for about 2 years and was pulled out when I replaced the engine recently. Current mileage is 27,000 on the clutch. It was drag raced almost every weekend during this time and auto crossed a few times. Also driven every day to work (Washington DC traffic) when the rear end wasn't broken. It was working FINE when the motor was pulled out.
The car is a 92 LT1 6spd (ZF6). Stock LT1 with a Top Gun Fogger set on 150HP and a Corsa cat back exhaust. Stock 3.45 rear gears. Fidanza Alum flywheel. Hurst Shifter. 26X11.50 Bias Ply Mickey Thompson ET Streets.
Drag racing driving style: 5500RPM launch, 1.58-1.60 60ft times provided the stub axels didn't gernade (which they did quite frequently). To combat the rear end breakage I replaced the ET Streets with a set of 315/35R17 BFG drag radials and switched to a 4500RPM "clutch slipping" launch about a year and 15,000 miles into the clutches life. The NO2 is on a WOT switch and anyone who has used a Top Gun NO2 kit will tell you they hit HARD. With the ET streets it obviously hit as soon as the clutch was popped. With the DR's is got activated about 1/2 way through low gear once the clutch was fully engaged.
PICs
Top of PP.
Bottom of PP.
FW side of Disk.
Close up of Disk Puck.
Close up of PP surface.
Close up of TB.
There is some heat bluing of the PP surface from slipping it abuseivly at the track and driving it in traffic all the time. No real groves to speak of in the PP or FW surfaces, only the minor heat bluing. Surprisingly the Disk looks almost new and did not show much wear in reguard to the thickness as compared to a brand new one. The TB was still quite and shows a little grease was pushed out from the heat but nothing out of the ordinary for almost 30Kmiles of use/abuse.
It drove OK on the street and had pretty good street manners. It would chatter when it got hot and if you kept trying to slip it after. It took some getting use to but I easily taught my GF how to drive the car by "rolling it out" in traffic. It never slipped once on a 5500RPM NO2 induced clutch dump at the strip. Once I let all the way out it (even dragging it on the DR's) it never slipped again or on a gear change.
All in all I am very pleased with the clutch. It was replaced with a brand new one just like it. We'll see how it holds up to my new engine.
Will
It's a regular old style Stage 3. It's been in my Corvette for about 2 years and was pulled out when I replaced the engine recently. Current mileage is 27,000 on the clutch. It was drag raced almost every weekend during this time and auto crossed a few times. Also driven every day to work (Washington DC traffic) when the rear end wasn't broken. It was working FINE when the motor was pulled out.
The car is a 92 LT1 6spd (ZF6). Stock LT1 with a Top Gun Fogger set on 150HP and a Corsa cat back exhaust. Stock 3.45 rear gears. Fidanza Alum flywheel. Hurst Shifter. 26X11.50 Bias Ply Mickey Thompson ET Streets.
Drag racing driving style: 5500RPM launch, 1.58-1.60 60ft times provided the stub axels didn't gernade (which they did quite frequently). To combat the rear end breakage I replaced the ET Streets with a set of 315/35R17 BFG drag radials and switched to a 4500RPM "clutch slipping" launch about a year and 15,000 miles into the clutches life. The NO2 is on a WOT switch and anyone who has used a Top Gun NO2 kit will tell you they hit HARD. With the ET streets it obviously hit as soon as the clutch was popped. With the DR's is got activated about 1/2 way through low gear once the clutch was fully engaged.
PICs
Top of PP.
Bottom of PP.
FW side of Disk.
Close up of Disk Puck.
Close up of PP surface.
Close up of TB.
There is some heat bluing of the PP surface from slipping it abuseivly at the track and driving it in traffic all the time. No real groves to speak of in the PP or FW surfaces, only the minor heat bluing. Surprisingly the Disk looks almost new and did not show much wear in reguard to the thickness as compared to a brand new one. The TB was still quite and shows a little grease was pushed out from the heat but nothing out of the ordinary for almost 30Kmiles of use/abuse.
It drove OK on the street and had pretty good street manners. It would chatter when it got hot and if you kept trying to slip it after. It took some getting use to but I easily taught my GF how to drive the car by "rolling it out" in traffic. It never slipped once on a 5500RPM NO2 induced clutch dump at the strip. Once I let all the way out it (even dragging it on the DR's) it never slipped again or on a gear change.
All in all I am very pleased with the clutch. It was replaced with a brand new one just like it. We'll see how it holds up to my new engine.
Will
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
Steel or Aluminum flywheel? It seems like you have had good luck.
The only part I didn't like about SPEC was the fact that the Al flywheel will not hold the bolts in high HP applications.
McLeod twin-disk in mine.
Aaron
The only part I didn't like about SPEC was the fact that the Al flywheel will not hold the bolts in high HP applications.
McLeod twin-disk in mine.
Aaron
Thread Starter
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Since I'll have the new motor out of the car next month we'll see how the new Stage 3 has been holding up to 478RWHP.
Will
Melting Slicks
Joined: May 2005
Posts: 2,826
Likes: 3
From: Tennessee
We (Keisler) have been selling SPEC clutches for a few years now and they are great.
I run a Stage 1 in my daily driver and it is absolutely perfect. I swear by them and recommend them to anyone who asks.
Richard
Tech Support
I run a Stage 1 in my daily driver and it is absolutely perfect. I swear by them and recommend them to anyone who asks.
Richard
Tech Support
