Hi all

My winter upgrades are almost complete, just a few things to purchase....one of those being a clutch.

I've gone from a standard silvertop zetec (2.0l ph2) with a standard type 9 to a

Dunnell option 6 kit http://www.dunnellengines.com/zetec_inj_optionkits_6.php

with a new box from spcomponents running the rocket rations http://www.spcomponents.co.uk/gpage3.html

Dunnell lightened my standard 2.0 flywheel.

Car weighs ~575kg.

So the question is what clutch do I buy and where from? I'm assuming a standard Mondeo clutch will be no good.

Help me out

Thanks

You're best off speaking to some of the performance clutch manufacturers to see what their clutches are rated up to. Are you pushing into the realms of paddle clutches? I have been told they are very harsh and "on/off", and whilst good for track, aren't really great for road driving. I have personally chosen a Black Diamond carbon kevlar clutch for my silvertop/Quaife T9/plate LSD setup, upon recommendation for the spec and potential power from my car. It wasn't the cheapest at about £250 ish, but cheaper than the £400 paddle alternative.

As with all things, you pays your money and takes your choice!

What do Dunnell recomend as they should know.

Don't use a lightened flywheel on an engine of that power, in truth never use a lightened flywheel. They can (and do) occasionally explode and as well as destroying the bellhousing its likely they will irreparably damage the engine and gearbox. Worse thing is think where your feet and legs are, people have been seriously injured.

Get a proper steel one, Raceline sell one as do Burton and other sellers, only a few pounds more than a standard lightened one.

Best thing about the steel ones is they come drilled to fit a Pinto clutch too. Loads of high performance Pinto clutches on the market at reasonable prices including AP who make them to take more power than your engine. You will probably find a Dunnell clutch to match your flywheel is very expensive.

As an example my steel flywheel is fitted with a Sierra DOHC clutch. Designed to cope with a heavy car towing a caravan it can easily cope with more power in a light car like a seven. Cost £70 12 years ago and still perfect, has coped with 208 bhp with no issues.

I'd ask Dunnel, I bought their lightened flywheel and clutch and the price was not too bad. I suspeect, as said, that given the weight of the car that nothing much more than a standard clutch is required.

A standard clutch will more than likely be up to the job. Unlike a turbocharged engine, tuning a naturally aspirated engine doesn't tend to give a significant increase in peak torque, it simply moves the peak torque further up the RPM range.

The standard 2.0L flywheel is deliberately weighted with a large ring of material on the outside - removing this does not weaken the flywheel, but I agree that significantly lightening cast iron flywheels is an invitation to remove your legs.

Instead of lightening your 2.0 flywheel would you not be better with an 1800 flywheel since they are smaller and lighter to begin with and either get a lightweight one of these or lighten one, you could then fit a 220mm uprated Escort RS Turbo clutch to it, they can be got for reasonable money. The NA cars are not subject to the strains the turbo'd car is so the RST clutch should handle things OK.

I have a 2.0 silvertop but I have to fit an 1800 flywheel as the 2.0 one is physically too big to fit in my FWD BC gearbox.

[Edited on 25/3/14 by Scuzzle]

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Originally posted by MikeRJ[/i
The standard 2.0L flywheel is deliberately weighted with a large ring of material on the outside - removing this does not weaken the flywheel,

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