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Old 03-27-2013, 06:22 PM   #1
ace32x
 
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stock lsa clutch, what are they good to?

what is the stock clutch good to? im seeing people putting down low 700 on the clutch with out swapping it out. debating porting my blower and heads though and im thinking with all my other mods going on that will put it in the 750-760 range seems like it might be pushing it on a stock clutch
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Old 03-27-2013, 08:05 PM   #2
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750-760 stock blower alone is a challenge, to the crank is no problem, wheels is a different story!

I would be more worried about the LSA at that level,than our beefy clutch brotha!

Best of luck tho hope someone has a fact sided answer for you!
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Old 03-27-2013, 08:12 PM   #3
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Originally Posted by ZL1terminator View Post
750-760 stock blower alone is a challenge, to the crank is no problem, wheels is a different story!

I would be more worried about the LSA at that level,than our beefy clutch brotha!

Best of luck tho hope someone has a fact sided answer for you!

shouldnt be to hard with full bolt ons ported head and ported blower and 9.5 lower and 2.5 upper.
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Old 03-27-2013, 10:06 PM   #4
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shouldnt be to hard with full bolt ons ported head and ported blower and 9.5 lower and 2.5 upper.
9.5 lower and 2.5 upper isn't a good mix. The rpms for the blower will be to high.. Maybe I'm wrong but I heard it isn't safe. Sorry for thread jacking
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Old 03-27-2013, 10:30 PM   #5
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9.5 lower and 2.5 upper isn't a good mix. The rpms for the blower will be to high.. Maybe I'm wrong but I heard it isn't safe. Sorry for thread jacking
overspins it a fair amount but if it burns up the bearings ill just rebuild it. its not my daily anyways.

talked to a few people and the shop that will be porting the blower adn snout and they think it should hold up fine
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Old 03-28-2013, 11:35 AM   #6
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I have seen two blown clutches all in the mid 700 ranges so it is possible to do.

my .02 is just settle for low 700's and don't overspin the blower that far. It is out of effecienty and it buiding extra heat and take lot of power to spin.
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Old 03-28-2013, 11:38 AM   #7
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I have seen two blown clutches all in the mid 700 ranges so it is possible to do.

my .02 is just settle for low 700's and don't overspin the blower that far. It is out of effecienty and it buiding extra heat and take lot of power to spin.
hmm thats what i was afraid of. i could not port the blower and save some money there and just do the snout and run the 9.1 lower and 2.5 upper.
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Old 03-28-2013, 02:39 PM   #8
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hmm thats what i was afraid of. i could not port the blower and save some money there and just do the snout and run the 9.1 lower and 2.5 upper.
The nice thing about staying out of the 9.55 is you might now have to buy the idler relocation bracket.

2.55 and 9.1 put you just barely over the blowers recomended limit. the 8.6 lower puts you right under it. they both don't really require any extras from what I have read.

I have the 8.6 lower and 100% know it just goes on no extra parts.

you could always port the blower to try to lower IAt2 temps and just run the 8.6 if you are worried about being over powered.

that is the nice thing about boost you could dial it back if needed.

you could even try the 2.38 upper that is like 15psi in one pulley but you still have some blower rpm in the safe range on the table.
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Old 03-28-2013, 02:49 PM   #9
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The nice thing about staying out of the 9.55 is you might now have to buy the idler relocation bracket.

2.55 and 9.1 put you just barely over the blowers recomended limit. the 8.6 lower puts you right under it. they both don't really require any extras from what I have read.

I have the 8.6 lower and 100% know it just goes on no extra parts.

you could always port the blower to try to lower IAt2 temps and just run the 8.6 if you are worried about being over powered.

that is the nice thing about boost you could dial it back if needed.

you could even try the 2.38 upper that is like 15psi in one pulley but you still have some blower rpm in the safe range on the table.
i already have the 9.1 and the 2.5 sitting on my desk and the 50 mm idler. thinking at this point after doing some searching and talking ill leave the blower alone and save the $. ill wait and do that down the road when i do a clutch and ill do the heads at the same time.
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Old 03-28-2013, 02:54 PM   #10
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yeah I think the 9.1 and 2.55 would be great. you are on the edge but not way over it as far as blower RPM.
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Old 03-28-2013, 03:00 PM   #11
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yeah I think the 9.1 and 2.55 would be great. you are on the edge but not way over it as far as blower RPM.
if i leave the blower alone for now maybe next time i revist it ill be more apt to throw a spray bar in or do the 2.3L swap that lingenfelter is now making a snout for XD. HP is like crack will eventually want more XD. at this point i just want it faster than my last car but its going to be close with no blower work
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Old 03-28-2013, 05:05 PM   #12
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The 2.5 upper and 9.1 lower will definately give you a very noticable increase in power without porting the blower!
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Old 04-01-2013, 03:54 PM   #13
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The 2.5 upper and 9.1 lower will definately give you a very noticable increase in power without porting the blower!
put down some good numbers on your a6 with a similar set up! whats the sizing on your cam?
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Old 04-02-2013, 07:26 PM   #14
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Verdict??

So, is the verdict that the stock clutch in the ZL1 can handle 700RWHP? If that's the case, I'd be looking at that as a replacement for my 2012 SS clutch. Thanks!!
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Old 04-02-2013, 08:18 PM   #15
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So, is the verdict that the stock clutch in the ZL1 can handle 700RWHP? If that's the case, I'd be looking at that as a replacement for my 2012 SS clutch. Thanks!!
Browse the CTS-V forums. They use the same clutch and it seems the general consensus is 650 rwhp is the point where is starts slipping. Of course mileage and driving style play a role in determining clutch life. I have a friend with an 09 CTS-V with 562 rwhp and 44K miles and his clutch is starting to slip.

Here is some additional information I found about the ZL1 clutch:




Quote:
The present TR-6060-equipped Camaro with the naturally aspirated LS3 has a single-disc clutch that's good to around 500 hp or so (about a 20 percent cushion over the stock engine's output). Our inside sources tell us the supercharged LSA engine used in the Caddy CTS-V, as well as the forthcoming ZL1 Camaro, has or will have a dual-disc clutch with about 20 percent more holding power (about 700hp capacity).



From the Corvette forum:




Quote:
We use the clutch pedal return spring on the stock C6 clutch and on ZR1/LS9 clutch upgrades as well. We also have a similar product designed for the 2010-2013 Camaro and use it with the stock clutch and the twin disk ZR1/LS9 clutch.
Quote:

The clutch pedal return spring is NOT the same as the over-center spring you already have on the Corvette pedal. That spring is not designed to return the pedal to the released position.

FYI - the ZL1 Camaro doesn't need one. GM put a clutch return spring on the ZL1 from the factory (in addition to the over-center spring). Nice to see different companies coming up with the same solution. 8-)
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Old 04-03-2013, 10:41 AM   #16
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good info!
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Old 04-04-2013, 06:55 PM   #17
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DrkPhx -- Thanks for the info! I'll definitely check out the CTS-V forums, but it sounds like it'll handle what I need.
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