Clutchplate ripped to pieces.

[Anonymous]

I already mentioned it before, the gearbox is the achillesheel in our cars. I also know the maximum torque of the gearbox is 320Nm. The standard engine comes already quite close to that figure. You can go higher than the 320Nm, it won't break the box immediately, but it will shorten life drastically, as I found out.
I already installed a more grippy clutchplate in the car, which made it much more responsive, there was just no slipping clutch anymore, just wheelspin when pushing it, until sundaymorning.
So with the tuning beyond the standard expect a lifecycle of about 40000 km. That's what my clutch held.

If people are still looking for a re-inforced clutch, now it's time to give me a message, since I will design a stronger one for my car now.

One big advantage to all of this though, now I've got an excuse not to sit around the Xmasstree for a week or so :approve:

 

[Jamesv6]

Is this any good? http://www.yozzasport.co.uk/proddetail. ... _Kit&cat=6

 

[Anonymous]

Is this any good? http://www.yozzasport.co.uk/proddetail. ... _Kit&cat=6

I'm not too sure about that one, I think it's a rigid one, so no forgivenes towards the gearbox. I know of the 5 turbo, which could also be equiped with rigid clutches, many primeshafts ended premature due to the tough handling.

 

[Anonymous]

The limit of the standard box is in the casing, so not much beefing up possibilities there.
I've made already many reactions on this one, but the absolute maximum torque the box is capable of with a normal lifecycle, is 320Nm. You can put in more, but lifetime will go down exponentional. Actually the only thing you can do in combination with the standard box is tuning the engine by means of same torquefigures but at higher revs. How far you can go depends with the standard engine probably of the valvetrain, probably somewhwere around 8000 rpm.
If you would limit yourself to the maximum torque, you would still be able to get a powerfigure of around 334 Kw at 10000 rpm. If it is still driveable is another question, depending on the needed camprofiles. Maybe if you can adapt the timingshifter on the camshaft............hmmm, I still got a spare engine, and some friends working in F1 engine development.

 

[Peter255]

My clutch disintegrated on my Mk2 @ 35K miles.

It literally smashed itself to bits before destroying the casing around it. [smilie=evil.gif]

Too much grip and too much torque!

Peter

 

[Ali]

My clutch disintegrated on my Mk2 @ 35K miles.

It literally smashed itself to bits before destroying the casing around it. [smilie=evil.gif]

Too much grip and too much torque!

Peter

Expensive fix?

 

[Peter255]

My clutch disintegrated on my Mk2 @ 35K miles.

It literally smashed itself to bits before destroying the casing around it. [smilie=evil.gif]

Too much grip and too much torque!

Peter

Expensive fix?

Would have been! The dust also killed the starter motor! And then the 6th gear synchro went too (un-related). [smilie=icon_eek.gif]

Long story but warranty, Scotty, and Clarkie did the business between them! :approve:

Peter

 

[Ali]

Good work! Touch wood i've not had any engine related issues...not even a coil!

 

[Anonymous]

Sorted things out, turned out, that it wasn't the clutchplate after all. It was fine. The problem was in the differential, which took me a bit by surprize, because it didn't make any rattling sound at all, just no propulsion. I also tried it by hand, before taking out the box, by holding one wheel and turning the other, everything seemed ok. taking out the propshaft on lefthandside revealed the problem, the securingring was pushed out by a ripped distancering. So spend about 1 1/2 day taking out the box, and remounting it, and 15 pounds worth off materials.
Is this then the weakest link? The ring is being exposed to axialforces which come from the differential planetodial gears, so it could well be the case. I'll keep an eye on it.

So for everybody who encounters the same, sudden loss of propulsion, first have a look on the differential. Dispite my experience I overlooked it, and thought I ripped out the hart of the clutchplate, which gives simmilar effects, no noise from broken parts, fully functional gearbox, and no propulsion.

Also a few shots off my exhaust system, I mentioned in some other post.

 

[Ali]

Interesting lookin system!