Clutches
Turbo Mini Forums

Hi all

Building a short stroke 1275 (1100) and need some advise about a clutch.

Have been advised the "99% of the turbo guys stay away from verto and fit the pre verto setup as there are more plates and diaphragm options available"

Have always been a pre verto person and have a clutch ready to go. Looking at 150-180 and I don't think the diaphragm clutch will cope, the Grey plate was doing OK at 100 but ??

Initially looking at the Minispares lightened Verto flywheel and the +20% cover

Then looking at the Minispares lightened Verto flywheel and convert to RTS.

Car is used for hillclimbs, so harsh take-offs

Also as an aside - can the flywheel be lightened further ??

regards to all

Steve

Adelaide (Aust)

That's an old phrase. Most turbo engines use an RTS verto now.

Unlikely launches will be the problem, simply from a lack of grips unless you've got some serious slicks.

Clutch will be under more pressure say hard in 3rd or 4th gear

Clutches do seem hit or miss.

I was lucky with mine 25 or so years ago where I hunted through dozens of covers at my supplier and found a regular 1000cc verto cover that was markedly stronger than all the rest. And this gripped anything I ever threw at it, probably around 200hp or so.
Many clutches before, listed as turbo clutches etc all slipped at the first sign of boost, this one just worked ( with a paddle disc of course )

Sadly it's unlikely anyone would have that luck these days

The twin diaphragm spring "RTS" as some call it, seems a very good option.
I've had other clutches for other vehicles that used the double spring setup, and it makes a lot of sense.

If you were feeling flush, Ascaso make a twin plate system
It is a pity it wasnt based around a verto though. But again, supply/demand I guess.

https://www.facebook.com/watch/?v=556721298997126

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I run a pre-verto on the hills. Grey diaphragm and paddle plate in the turbo, it's served a number of seasons with aggressive starts (not slicks though). The other car also uses a grey diaphragm, not sure what plate (luckily not had it apart yet) and that's on 13x7 slicks, been in since 2021