well Speed again sorry to disagree. The last pic you posted from ZOOM site is not the clutch I have (often picture shown of a part is different). Look at the pics I posted and the last one you did.
Sure the size and hole placement of the inner hub is the same but the plate thickness and rivet type/size is bigger on my pics. springs are also larger on the ZOOM I have than the ones shown in your pic. The last pic you showed does not have the solid plate that the friction material is on as the one in my pic.
I know it is confusing to analize pics on a manufactures website. That is why I ordered the ZOOM & RAM from Summit and then layed those out on my bench along side the stock and SPEC clutches.
Not saying ZOOM is better than any others, just my choice based on what to me appears to be a better constructed disc. PP on all appeared to be the sam other than a paint job.
having run all at the track I feel the SPEC 2+ grabs harder of all I tried but that clutch died at 2k miles on the starting line. The ZOOM holds well and I prefer the clutch to "give" a little vs. hard parts down stream of it.
I have a stage 2 clutch in my car... no problems and it grabs real fucking good when I want it to. no problems, at all.
__________________ 1996 Trans Am WS6 M6 - 13.679 at 102.77MPH in 1/4. New 2009 G5 - DD. Pontiac Forever
Short Throw, GMMG Catback, TPIS Air Foil, SPEC Stage 2 Clutch, Strut Tower Brace, BMR SFCs, BMR Trailing Arms, !TBCoolant, Detroit TruTrac, Full sound system! Future Mods: Koni 4/4s, Strano Springs, UMI PHB (ON THE WAY) and eliminating that 80+MPH vibration.
I used a Powergrip HD disc in my car. In fact I bought it used from someone and it had about 3k miles supposedly. I have put about 2500 more miles on it and so far it is still holding up OK and it looked fine to me when I pulled the tranny off a few weeks ago.
It does chatter a lot though (says right on the RAM website to expect some chatter from these clutches). In the future I will spend the money on a clutch that holds some torque without the chatter, because it gets pretty annoying sometimes, especially when reversing.
__________________ | '95 Z28 M6 - 355 LT1 - full weight with air conditioning | | GM 847 cam, Lingenfelter CAI, Pacesetter longtubes, dual exhaust, 4.10 gears, MadZ28 mail order tune | |12.68 @ 113mph, 2.0 60' |
I used a Powergrip HD disc in my car. In fact I bought it used from someone and it had about 3k miles supposedly. I have put about 2500 more miles on it and so far it is still holding up OK and it looked fine to me when I pulled the tranny off a few weeks ago.
It does chatter a lot though (says right on the RAM website to expect some chatter from these clutches). In the future I will spend the money on a clutch that holds some torque without the chatter, because it gets pretty annoying sometimes, especially when reversing.
i have a ram clutch and i like how it pulls never had an spec so dont know the difference between them all i can tell u is that ram hd is a prety nice clutch im pulling like 400-420 to the wheel
In the future I will spend the money on a clutch that holds some torque without the chatter, because it gets pretty annoying sometimes, especially when reversing.
amen
my SPEC 2+ chattered like a dog shiating razor blades on the street. Unless you were dead nuts on engagement it chattered and in stop/go traffic that is tough to do.
The ZOOM HP had some chatter during 500 mi break in but now is smooth and very stretable. My car weighs 4400 lbs and I dump it at 2500 RPM running a MT Street tire. Held up last 2 seasons at the track.
I just run their HP and I make about 380 HP/395TQ to the wheels.
Like other clutch companies they make "stage X" discs for higher HP applications. I would suspect street maners become secondary as you move up in stage #'s as with any other brand
I say go with the Spec 3. That's what I'm using, and have been very please with it. I got a hell of a deal on it though. It had less than 1000 miles on it, and the guy let me have it for $200. It still looked brand new. It had a little chatter at first. But, after about 1000 miles it went away. Still a little chatter in reverse, but I've heard that most aftermarket clutches are like that. The only things that I've even had a problem with, are that it's a little noisy sitting at idle in neutral (Not nearly as bad as my buddy's twin disk in his WRX though) and that it's just an On/Off switch pretty much. I've only got about the top 3 inches of the pedal between friction point, and fully engaged. Both problems are something that I've already gotten used to in the 3-4k that I've had it in the car. The clutch pedal is also no stiffer than it was with my O'Reilly's stock replacement I had before it.
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