Hello all,

 

Wondering if anyone had first had first hand experience of the differences of a TT zed with a lightened flywheel? Z1 have the exedy hyper twin carbon clutch and flywheel on sale which is apparently 90% lighter than stock or somethgin ridiculous.

 

i have read that it is one of the best upgrades to transform the feel of the car and it will be able to transfer power much quicker due to inertia. I imagine revving more freely etc.

 

After deciding not to buy a used exedy hyper twin for £250 due to a unknown history and condition the Z1 option is looking pretty good to be honest!

 

The 2017 plan is as follows:

 

- Install 99 spec bumper, spoiler and skirts.

- Finish interior (rear seats to do and some more alcantara and maybe dash retrim test etc)

- dual selin, intercoolers, and remap.

- possibly clutch/flywheel based on above.

 

regards,

90% the weight are you sure about that?

According to mr exedy ;) unless I heard him wrong. Also I think the words up to were used.

This is what i read on the exedy website

• 40 to 50% reduction in inertia vs OEM

Wondering if anyone had first had first hand experience of the differences of a TT zed with a lightened flywheel?

 

I have plenty of experience of driving 300s with stock and light weight flywheels.........................

But its all with NAs so clearly no use to a TT owner:whistling:

Me too on an NA, but i would imagine by being lighter it will feel quicker due to the weight reduction on the crank as with the NA you dont gain more horsepower just release the power more efficiently that you already have available.

At the lights blipping the pedal trying to find a new girlfriend you will notice a small difference in pick-up...on the road in the real world ide spend your hard earned elsewhere like brakes ect;)

There's loads of information on this one Will and encourage you to do some reading. It's one of those things with equal pros and cons depending on what you want to achieve.

The purpose of the heavy stock flywheels car manufacturers fit is to create inertia, this makes things like hill starts easier. That comes at a price though. It takes more energy and time to change the speed of that mass, resulting in a less responsive free rev, useful for down shifting etc.

One word of advice though don't skimp on it, if a flywheel let's go at 5k rpm or more... well just picture a cross between a Catherine wheel and a hand grenade. You might keep your left foot if your lucky :lol:

If you have any ideas of retaining any form of around town/slow traffic/hill start road manners then don't even think of having a twin plate carbon clutch, I've seen starved lions with less bite! Whilst they maybe significantly lighter to a tradition clutch they're very focused for track/drag applications. An RPS Street Max clutch will do everything 99% of Road going Z owners will need. Stock feel and pedal weight and will hold just shy of 800 ft/lbs of torque.

As for ligh widget fly wheels, simply put, there's less rotational mass loaded into the rotating assembly of the engine and less parasitic draw. You're unlikely to notice it's effect whilst in gear and pulling. However you will notice is whilst decelerating whilst in gear (more engine braking) as well as any 'blip' you may give between gear changes (free-er quicker rev).

If you go for a very light flywheel, you'll find that you'll need more revs and more clutch slip to move off a stand still. The northern negative is a reduction in torque. On the TT however, it minimal once on boost (1.6 lbs/ft loss in torque, 8hp gain at the fly on before and after dyno sessions on same rolling road)

Really should proof read when using my phone! Should read *the other negative is a reduction

Thanks for the feedback guys.

 

Steve yeah I didn't realise how much this would have been covered already really (duh). Been reading up for a while tonight. That sounds pretty terrifying haha,

 

Thanks for your comments nick. Interesting to know some actual dunno figures too! Sounds like I will out money elsewhere to be honest.... should really go in to the wedding fund which has to be paid in Aug!

Thanks for the feedback guys.

 

Steve yeah I didn't realise how much this would have been covered already really (duh). Been reading up for a while tonight. That sounds pretty terrifying haha,

 

Thanks for your comments nick. Interesting to know some actual dunno figures too! Sounds like I will out money elsewhere to be honest.... should really go in to the wedding fund which has to be paid in Aug!

 

This demonstrates as well as anything the effect of a light weight fly wheel when free revving