C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

ZF owners!

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Old May 3, 2002 | 11:23 AM
  #1  
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Default ZF owners!

Does your clutch "take" when the pedal is almost fully released? I know that "mine" do , but it dont slip. I know that for sure. Is that something I can set?
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Old May 3, 2002 | 11:24 AM
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Default Re: ZF owners! (devilfish)

Mine doesn't grab completely until it is all the way out. No problems with slipping or anything If got about 50000 miles on the original clutch.
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Old May 3, 2002 | 11:29 AM
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Default Re: ZF owners! (devilfish)

Mine starts to engage as soon as it comes off the floorboard and will slip somewhat until the pedal is almost at the top of it's travel. This means the clutch is good and healthy.

A worn clutch or a weak pressure plate, or both will completely disengage by just tapping the pedal with the rest of the travel being dead.
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Old May 3, 2002 | 12:15 PM
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Default Re: ZF owners! (Nathan Plemons)

well the car doesent start to pull before the clutch is halfway up, and really grabs when fully upp. Worn clutch?
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Old May 3, 2002 | 01:00 PM
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Default Re: ZF owners! (devilfish)

how much for a stock replace?
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Old May 3, 2002 | 03:33 PM
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Default Re: ZF owners! (devilfish)

Mine doesn't release until the clutch is almost all the way up. Mine is a new clutch.
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Old May 3, 2002 | 05:32 PM
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Default Re: ZF owners! (Vette92)

so the clutch could be OK ?
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Old May 3, 2002 | 05:47 PM
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Default Re: ZF owners! (devilfish)

If it doesn't slip in high gear (3rd or 4th) from a low rpm accelleration, then I would say it is fine.
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Old May 3, 2002 | 08:33 PM
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Default Re: ZF owners! (devilfish)

that can get pricey...

however, the miles your car has... the clutch should be ok for a while longer.

expect to make it to over 125k km's... at least...

it is wearing out, they all do...

when you DO replace, get "Beam Plates" and a Hurst shifter!!!!!!

expect $500.00US for parts - not including a new flywheel, which is VERY expensive!!! $1000.00US - hope you can reuse yours!!! plus the hurst and the beam plates. the beam plates help hold the transmission and rear differencial to the c-beam. tightens up the entire assembly.




[Modified by bogus, 7:35 PM 5/3/2002]
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Old May 4, 2002 | 04:45 AM
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Default Re: ZF owners! (Vette92)

Mine doesn't release until the clutch is almost all the way up. Mine is a new clutch.
Mine too, it has been liek this since day 1.
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Old May 4, 2002 | 05:28 AM
  #11  
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Default Re: ZF owners! (bogus)

Is it normal that you have to change the flywheel also? I tought that part whas something that would last a LOOONG time?
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Old May 5, 2002 | 12:28 AM
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Default Re: ZF owners! (devilfish)

My clutch acts like yours and mine does not slip at all with 68,000 miles. If I were you I wouldn't worry about it until it begins to slip. I am not an expert but I don't think you will have to replace your flywheel if you replace your clurch soon after it begins to slip. FrankLT4CE
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Old May 5, 2002 | 12:38 AM
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Default Re: ZF owners! (devilfish)

a flywheel is a strange beasty... they can last a long time, however, for them to last that long, you must have the flywheel resurfaced.

the dual mass should NOT resurfaced.

what makes it a dual mass is some rubber like material between 2 seperate pieces of metal. this material does not like oils and such. the lubricants used when resurfacing will cause a break down of the rubber like material. hence, replace, not resurface.

now, what you CAN do. IF the flywheel is clean - not cut up or overly hot - you can scuff one up.

what I would do is this: get the following parts:

Camaro (F Body) single mass flywheel
have it machined down .090 (of an inch)
Camaro friction disc
Corvette pressure plate

this WILL work. I just wish I had done mine this way... long ugly story.

however, there are others doing this. the only downside - NOISE. The ZF is a noisy box... you will have all sorts of "experts" telling you its getting ready to eat itself...


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Old May 6, 2002 | 10:20 PM
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Default Re: ZF owners! (bogus)

Mine doesn't release until the clutch is almost all the way up. Mine is a new clutch


However,
a flywheel is a strange beasty... they can last a long time, however, for them to last that long, you must have the flywheel resurfaced.

the dual mass should NOT resurfaced.
I do NOT agree with this. Mine was resurfaced and works brilliantly, and Corvette World here in Dallas, TX will tell you they have not had 1 problem doing it to ANY of the Vettes that they service through the years! Have only the best do the work and you'll recieve the best from your Vette. :conehead
:D :D :D
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