badass951

Just wanted to know if anyone has these upgrades? If so, were the performance gains worth the money spent on these upgrades?

rage2

I have a lightened flywheel. It's great for track work, you can shift fairly fast, and the revs would match perfect therefore reducing clutch wear. It's horrible for getting off the line because it doesn't store enough energy when you rev it up, so you need more revs to get off the line.

TonyG

Got both. Work great especially if you have a lightweight pressure plate and don't run balance shafts.

First and second gear are violent! :-) The thing whips on real hard.

TonyG

badass951

How much quicker does the car rev? For example, when I try and blip the throttle on my 951 with a stock engine it seems to not rev as freely as say, my friend's Ferrari 355 :-) Basically, will I notice the engine revving more freely with these upgrades or is it not very noticeable?

I have spoken with one owner on the phone who has an engine with these modifcations and he claims that his car hits 0-140 mph in the time it used to hit 0-120 mph. Is this possible? Will these upgrades make for a significant decrease in acceleration times?

special tool

Yeah, it is quiker and a lot quiker to rev. But you are never going to match revs with a high compression engine like a 355 when you are not into the boost.

OZ951

I have the lightened FW, crank and PP and its a lot more free revving than my stock 951. I'd agree with all the above comments too. I like the combination a lot.

NZ951

So how light to do you for the flywheel? Reduce weight on the stock or buy an aftermarket version? Also, diffucult to fit?

OZ951

You can have the stock FW machined to remove weight or you can buy a aluminum FW. They are no more difficult to fit than a stock unit. One area that should be checked is the correct gapping between the reference sensor and the triggering screw in the FW.

Matt H

What I love about OZ setup is the KEP PP. If anyone has a sapre 1200 sitting around it feels fantastic. He was kind enough to let me "play" with it a while back and it really made me regret not getting one. It is very pricey but the pedal feel is INCREDIBLE. Feels the way a sports car should.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Alan C.

One thing to think about is that once the clutch is fully engaged with the flywheel the engine has to accelerate the entire mass of the car. A light weight clutch/flywheel combo is nice on the rack for shifting but to say a car will go to 140 mph in the same time it took to get to 120 mph seems a bit of stretch. Those extra 20 mph on the top end are hard fought, time consuming and heavily hp related.

I agree with Tony if you are going to do it you might as well get the light weight pressure plate too.

Alan C.

NZ951

So what kind of costs and suppliers are there for these products?

OZ951

Jason at Paragon can do the KEP pressure plate for about $600. He can supply to Fidanza flywheel but I know he was not getting a real good dealer price from Fidanza. Hence at one stage he couldnt offer a competitive price- email him and check. Huntley does the cranks for about $900, others probably do as well.

TurboTommy

I have lightened crank and flywheel. There is a small improvement in responce in low load situations. At even moderate loads, this slight increase in responsiveness (which can also be affected by air/fuel ratios just as the throttle is cracked open) is lost. The claim about quicker acceleration to 140 mph is, I'm sorry guys, absolute crap. Alan C said it mildly. The ability to accelerate hard is a function of horsepower, properly matched gearing, and weight of vehicle.

Matt Sheppard

Ahh, is this the voice of reason speaking?
(although to some, it only whispers . . .)

I'm still on the fence on this one - especially since Mr. Milledge advises only stock counterweights.

Alan C.

Matt,
And I was about to offer you my very last can of 25 hp wax.
Alan C.