which clutch
Turbo Mini Forums

I have just had my clutch go after 6 months of use spread over a year (car on and off the road a fair bit you see) the clutch that is in it is the one med supplied me and they list as a turbo clutch cover and plate this is a verto setup

I am running 7psi boost min and 12psi of boost max and am looking at about 106bhp at the wheels last time it was checked but the clutch might have been on its way out then as well as it has not been driven much since then.

I have been offered 2 verto setups
1. med this is there new heavy duty one that is just about to come out(end of the week) they said it would cope with what I need
2. a heavy duty setup listed by min-its which is rated at 420 deca-newtons (means nothing to me)


Obviously my third option is converting to the pre –verto setup but that is not cheep

I am after some guidance as to what to do as I don’t know if either of these clutches will be ok for what I need

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power

speak to stuart gurr, or have a look at roberts clutch setup!

"Cars are a lifetime of pain"

Some one needs to try out some of these new verto units. You look like the ideal candidate.

I bet the MED one is the same as the Min-its.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

The guy from Min-Its told me about this clutch at Stanford Hall show and quoted a clamping pressure that I instantly forgot - it's an age thing!

Anyway

420 DecaNewtons is 4200 Newtons is 428.2kg is 943.8lb - Agreed???

That puts it somewhere between an orange and a grey pre-verto.

Also about the same as a 0.095" verto.

Edited by Paul S on 27th Jan, 2009.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Are the clamping pressures of all the different clutches listed any where that would be a realy useful faq if not, comparing the vertos and the pre-verto

and is this min- its clutch up to the job it says it is?

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Apologies, just read your first post again.

If if you are doing 106hp at the wheels, I don't think these new vertos will do the business.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

:)

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

The 'peak' clamping pressures alone don't tell the full story. The 'return' force is the one that is important (ie the force from over-centre to clamp), together with the clamping pressure over a range you are interested in - ie between a brand-new plate and one just about down to the rivets.

The Pre-verto has a narrow clamping force, but high peak - which gives it an overall high. Conversely, the stock verto has a moderate peak, but a moderate (ish) overall over the range characteristic. I'll post up some graphs later if i remember...

Incidentally, mine are ready to be machined - but waiting on some tax return money (another few weeks) before this'll happen.

Edited by turbodave16v on 27th Jan, 2009.

I really like the idea of these new verto setups.

When I stripped my engine (Carl's ex) the thrusts had worn badly and damaged the crank (CAM6581 as well!).

The only thing that is putting me off is the weight of them.

In the 13's at last!.. Just

so do you guys recon i am going to need to convert to pre-verto setup then ?

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I decided to go down the pre-verto route as i wanted something that i could get parts for easily with out having to build up a new double clutch every time it needed changing.

Fair enough it should not need changing very often but i would prefer to use standard wearable parts and if I want to go for more power in the future I am in a position that I will not need to convert then.

So I brought one of MED's Clutch kits pre balanced the kit i brought was the stage 2 with a gray diaphragm and a AP clutch plate.

here are a few photos seems a shame to hide it away in the engine

"Tuning should be a compromise between what is possible and what is necessary"

10)Thou shalt always quest for more power