Exedy Hyper Single or ZZP Stage 4?
Which would you chose and why?
my current opinion is that both will take the power... ZZP Stage 4 has been shown to be a proven part, the Exedy has been shown to work on the road race cars but i've seen nothing about people having a bunch of miles on one or how they take to being slipped.
whats your goal for the car power wise? future upgrades and what not?
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GMSC
94 25.5 Z28 with a baby turbo
2009 Cobalt SS/TC
2001 Subaru Impreza RS
Well, i tuned the car for 22lbs with HPTuners on 93 and it spun in 2nd and flashed the stock clutch in 3rd when all it had was the downpipe... i'd like to see 330+hp with all of the parts currently waiting to go on the car. Currently sitting in a pile is a K&N short ram, ZZP 3" catless downpipe, MPx mufflerless 3" exhaust, rotated mounts i got from OTTP, not sure if they are real powell mounts or not, and a set of Pedders Springs... I've got E85 stations galore around me here in Upstate, SC so i may get a little feisty and shoot for 350hp and 440tq later on.
personally i like the spec stage 3 plus. never had an issue with it. i dont like southbend clutches so that rules out zzps clutches for me but the exedy is great. ive driven quite a few street cars....meaning a few cobalts, evos etc with the hyper single and not one slipped and some had quite a bit of miles on there.
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GMSC
94 25.5 Z28 with a baby turbo
2009 Cobalt SS/TC
2001 Subaru Impreza RS
i answered that on .nub."exedy hyper single comes with a new lighter steel flywheel. zzp service is exellent, but I will say I know the Exedy folks well, worked with them on the clutch for cobalts, and ran them in Grand am Cup cars before the upgraded clutch came about.
I have had nothing but success with exedy they are very good parts, and in fact we made some flywheels for Exedy for Millens Sosltice; thats the clutch he used for that car. "
I have no idea where you get the LS7 reference on clutches not standing up, thats bs.
Exedy will not like being misused on the street with bad driving, its a metallic lining and abusing it by slipping it will kill it no doubt. Just as organic linings get abused.
I have a customer with an SC we built to stage 3 in 2007 , he sold the car to another guy two weeks ago. We had to replace the vibrant cat for the new customer, so it could pass emissions, ( pre 2009 Vibrant had big issues failing emissions with faulty cats according to the Vibrant web site) but the exedy clutch is still good.
You wont have any installation issues with an Exedy.
I considered the Spec units but everyone always seem to have had a bad experience with them. The few exedys i've seen have been pretty much 100% awesome.
I've seen 3 local cars do fine with the LS7 clutch holding 450ish whp untill they tried to slip it and then it was a matter of time. Most recently was my buddy's 08 C6Z but he was cutting low 1.6 60'fts on NT05R's. I understand what you're saying about abuse tho. I've been leaning towards the Exedy from the beginning, i just dont want to drop over a grand on a clutch and be in the same position next year... I'm most likely ordering one on friday but i just wanted to get a number of opinions before i do.
Last edited by Roadcone; 01-02-2012 at 10:12 PM.
idk where u get this info lol. no offense. we use all spec clutches in EVERY lsx swap we do. not one has come back with an issue. i ran the stage 3+ without a single issue either. 442whp 450 ft lbs on a mustang dyno, 416whp 426 ft lbs on the 2nd setup with over a 100 dyno passes and daily street driving. never slipped once.
but of your 2 choices im with the exedy
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GMSC
94 25.5 Z28 with a baby turbo
2009 Cobalt SS/TC
2001 Subaru Impreza RS
Just what i've seen personally around here. Different people have different results. But unless i find some glaring issue i'll be ordering an exedy this friday.
3k mile hypersingle for sale. 550 shipped. Worked perfect, never slipped. Already broken in for you.
No Such Thing as a Fast Cobalt
the problem ive found with people and spec clutches is people are just resurfacing their stock flywheels and calling it a day because they dotn want the chatter or whatever from the aluminum flywheel. the issue is the clutch disk is harder then the stock flywheel especially on the f23 cars. on brags car with his spec stage 3+ we didnt find clutch material it was all flywheel material in the bell housing and it ruined the disk.Originally Posted by Roadcone
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GMSC
94 25.5 Z28 with a baby turbo
2009 Cobalt SS/TC
2001 Subaru Impreza RS
hes got an lnf... dont remember if it can be switched or was that the one you guys had with the lnf trans?
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GMSC
94 25.5 Z28 with a baby turbo
2009 Cobalt SS/TC
2001 Subaru Impreza RS
I have the excedy stg2 on my 2.2 cobalt(f23) for about 2yrs and around 20k miles. It's daily driven, a little slipping on hills. Still going strong. Than again far isn't supercharged anymore. I ran mine on stuck flywheel too. So from my experience excedy is the way to go between zzp and excedy.
That makes sense... same concept as race pads on autozone rotors... does anyone know the weight difference between the Exedy unit and an oem LNF clutch?
azn mod>spec stg 2+ . mine slippy slippy when i had the tvs on. 2nd and 3rd gear ^_^
Matt O is correct about the flywheel and spec. But I will say when i ordered they ask what flywheel you use, so I thought stock flywheel would cut it. Well end result clutch ate flywheel
I ran a SPEC Stage 2+ on their LW flywheel for ~40k miles before I sold it. Held 400+ wtq, no issues once bled properly (live & learn, lol). THe LWFW with the LNF made DD a bit harder until I got used to it in a week or so. I went S2+ as I have old knees and heard about the Exedy being a bitch to DD.
The LWFW has a replaceable steel wear plate riveted on the FW that the disk mates to.
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'02 WS6 on C2H5OH
It works with both LSJ and LNF. And we used it with the lnf trans.
No Such Thing as a Fast Cobalt
Go with the Exedy man
looks like thats my only choice, Zoomer and Turbo Tim said the Stage 4 is on backorder... looks like i'll have a Exedy Hyper Single on friday...
You want a used one for 550 shipped?
No Such Thing as a Fast Cobalt
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