Hey everyone! Haven't been on for a while with all the crazy stuff going on right now. I hope everyone has remained in good health. I've just spent the last 2 hours browsing the forum trying to catch up. I haven't been to the track since last December. I had a feeling that a clutch replacement may be coming due and didn't want to chance another event with it. And what do you know, only 400 mile on the odometer since my last event in December and the clutch went out on me last week (in the driveway thankfully).
I have some questions about Spec Clutches. I did some searches and couldn't quite find an answer. My car is 2016 GTPP that I hit the track with 6+ events a year. 3680 lbs at the scales with a half tank of gas and me out of the car. Multiple suspension mods, but only a Ford Performance Power Pack 3 tune for additional power. 28K miles. It's not my daily, but I do like driving on the street with it.
I know a lot of people like to run the Exedy Hyper Single clutch. However, I've heard and read good things about Spec and decided to contact them for a recommendation. I know that some people tend to overspend when it comes to clutches and wanted to hear what they had to say. Their recommendation surprised me. According to them, they recommend their Stage 1 clutch with the billet aluminum pressure plate and aluminum flywheel. Their response is below.
"Thank you for the inquiry. For road course use, go as light as you can and it still be comfortable to drive wherever else you drive it. There are huge power, reliability and safety gains with the lightweight parts. If you still want it to be comfortable driving around town or on an off a trailer, etc, go with our lightweight single disc setup. Stage 1 is plenty (550 ft lbs tq and over 600 hp).
So I recommend, budget allowing, the Stage 1 clutch with billet lightweight pressure plate option and billet aluminum flywheel. This set will drop approx. 20 lbs off your rotating assembly, which is better for the car and your lap times. One other note is the lightweight pressure plate is much more resistant to damage should you overrev, badly miss a gear, suffer engine failure at high rpm, etc.. They pretty much never break straps, even with a big mistake.
I know that is a lot of info…please feed me any questions."
A 20 lb loss is quite a bit so I asked about drivability issues with stop and go traffic. Reading forums you see a lot of people saying to stay away from an aluminum flywheel. So I asked about it and this is what they said.
"No, that is bad info..car doesn’t know what material flywheel is in the car…it’s all about the mass vs drivability, and dropping 20 lbs will not make starts a bad experience.
If you had a 4K lb car w/ a V6 and 2.73 gearing , it would feel less friendly. But a late model Coyote car is going to drive just fine with this setup, which is why we sell thousands of them a season for street driven cars. And the aluminum is aircraft quality and has even better integrity at rpm than most steel. All our units are SFI certified. We use the aluminum parts in 2000hp drag setups (but with 2 discs instead of 1)."
I briefly checked around on pricing and that setup would put me in the neighborhood of the Exedy clutch. I don't know what the the weight loss is with the Exedy clutch, however, I believe that the Spec clutch would be a bit more driver friendly? Does anyone else have experience with this clutch?
I have some questions about Spec Clutches. I did some searches and couldn't quite find an answer. My car is 2016 GTPP that I hit the track with 6+ events a year. 3680 lbs at the scales with a half tank of gas and me out of the car. Multiple suspension mods, but only a Ford Performance Power Pack 3 tune for additional power. 28K miles. It's not my daily, but I do like driving on the street with it.
I know a lot of people like to run the Exedy Hyper Single clutch. However, I've heard and read good things about Spec and decided to contact them for a recommendation. I know that some people tend to overspend when it comes to clutches and wanted to hear what they had to say. Their recommendation surprised me. According to them, they recommend their Stage 1 clutch with the billet aluminum pressure plate and aluminum flywheel. Their response is below.
"Thank you for the inquiry. For road course use, go as light as you can and it still be comfortable to drive wherever else you drive it. There are huge power, reliability and safety gains with the lightweight parts. If you still want it to be comfortable driving around town or on an off a trailer, etc, go with our lightweight single disc setup. Stage 1 is plenty (550 ft lbs tq and over 600 hp).
So I recommend, budget allowing, the Stage 1 clutch with billet lightweight pressure plate option and billet aluminum flywheel. This set will drop approx. 20 lbs off your rotating assembly, which is better for the car and your lap times. One other note is the lightweight pressure plate is much more resistant to damage should you overrev, badly miss a gear, suffer engine failure at high rpm, etc.. They pretty much never break straps, even with a big mistake.
I know that is a lot of info…please feed me any questions."
A 20 lb loss is quite a bit so I asked about drivability issues with stop and go traffic. Reading forums you see a lot of people saying to stay away from an aluminum flywheel. So I asked about it and this is what they said.
"No, that is bad info..car doesn’t know what material flywheel is in the car…it’s all about the mass vs drivability, and dropping 20 lbs will not make starts a bad experience.
If you had a 4K lb car w/ a V6 and 2.73 gearing , it would feel less friendly. But a late model Coyote car is going to drive just fine with this setup, which is why we sell thousands of them a season for street driven cars. And the aluminum is aircraft quality and has even better integrity at rpm than most steel. All our units are SFI certified. We use the aluminum parts in 2000hp drag setups (but with 2 discs instead of 1)."
I briefly checked around on pricing and that setup would put me in the neighborhood of the Exedy clutch. I don't know what the the weight loss is with the Exedy clutch, however, I believe that the Spec clutch would be a bit more driver friendly? Does anyone else have experience with this clutch?