6 Puck Clutches

Mr.G

Mr.G

Club Member
Anyone use a 6 Puck clutch on a 240 or 280ZX?

Would it be too grabby/heavy for street use?
 
My car used to have a brass-button 6-puck clutch with solid centre, but it was taken out as it was supposedly too harsh for the street, very difficult to stop it 'chirping' the tires from stand still. I think they are meant to be better if they have a sprung centre.

Now it runs a ceramic type, but with a spring center. Which seems to handle the power ok.

ANy reason why you want to run the 6 puck clutch?
 
Hi Phil,

So how does the new one feel now, is it heavy/ and maybe hard for everyday road use.

Just wanted to know what their like and what my options are for when I go turbo.

I hear another option for me may be to use the 280zx 2+2 Flywheel and a 280zx clutch.
 
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I use a 280zx clutch which is the bigger type and It copes with the extra power from my Mods and only looses a little bit of bite after 5 really hard laps on the track deosn't slip though, seems to be up to the job ok.if I was you I would go for a 280zx big clutch and see how it goes I think they can be bought for about £70 + vat and carridge on places on the, Web, and If you want to go with a original size 240 clutch I have one forsale for a good price....

Nick..;) :S30:
 
Thanks for the reply Nick and you're offer to sell me a 240Z clutch for a good price! Will bear it in mind, should i give up on this idea..

I heard that the 280zx 2+2 clutch is stronger then the 2 seater, is that true do you know? Also what sort of bhp are you making at the moment.

Cheers,
 
I think about 200 at the wheels according to Rolling road, yes I think it would be stronger a larger surface area has to be better able to take more power.

Nick..
 
I've heard some mutterings about Z31 turbo clutches being 240mm diameter as well and being pretty heavy duty. Z31 flywheel won't fit so you'd still need a 2+2 flywheel.

Hopefully someone more clued up on these things than me will mosey on over shortly!

Cheers,
Rob
 
I think how heavy a clutch is also dependant on the pressure plate/diaphragm spring rate and clutch master cylinder, i.e. larger bore of the master cylinder, increased effort.

If these are stock, I don't think you would notice much difference in how heavy the pedal was..
 
Phil - thanks for the clarification - never new there were other factors.

Rob - I think those muttering must be true, as far as I can tell, the Z31 turbo and non turbo clutches are the same and the Z31 Turbo clutch is also the same as the 280ZX turbo clutch.

Maybe all i need is an N/A Z31 clutch with a 2+2 Flywheel.
 
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I heard that the 280zx 2+2 clutch is stronger then the 2 seater
Click to expand...
Only if you keep reading American web sites - their clutch specifications are often very different to ours. We had the HD version in all 280ZX models. Early 280ZX is in common with late 260Z, i.e 240mm diameter friction disc. Late 280ZX is similar spec with less pressure plate bolts. 240Z clutch and early 260Z use a 225mm pressure plate and are not really suitable for higher horsepower cars, although improved versions and equivalent lightweight flywheels are available in this configuration..
Z32 NA is 240mm, Z31 turbo and Z32 TT is 250mm. I'm not convinced that you can easily transfer a Z31 flywheel to an L-series engine. The flywheel is finely machined to fit the end of the crank and any imbalance could be terminal.
All 240mm and 250mm Z and ZX clutches are available in HD and race formats, e.g. Centreforce, ACT, AP, RPS and many others. You should be able to find a clutch that suits your required BHP and proposed activity.
For street use, I would suggest you buy the best organic faced sprung centre clutch kit available, e.g. ACT provide a kit that will handle 400 ft/lbs of torque and has 63% increased clamping force.
If the car is PRIMARILY for race use or will be subjected to higher rpm standing starts on a regular basis (lots of drag racing), then consider a paddle clutch but be aware that it will be difficult to use under stop / start street operation. The ACT 4 or 6 puck clutch kit in 240mm 280ZX format will handle up to 512 ft/lbs of torque with a 63% increase in clamping force.
If swapping clutches from one model to another, always be very wary of changes in installed height which can lead to impossible to release operation or partial disengagement at rest depending on whether your kit is shorter or taller than stock. Adjustments can be made with the variety of release bearing carriers available from other models!
 
Interesting read Mr. F.

Well after a little more reading up on the 6 puck, it looks like a bit overkill for my poposed activity, so I will be giving it a miss.

Thanks 'all' for the input.
 
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