velohead66

Need New Clutch - any mods I can do....at the same time.


Seems sensible that if the clutch is being replaced, there may be a related modification that could *potentially* be done at the same time.

ie rather than pay for the same labour 6 months down the track.
You know what I mean.

Car is a MY98 JDM Type R V Limited, but is now a 2.2L pushing out 179.9 kW ATW.

Davros 1979

iTrader: (56)

Lightened flywheel is the obvious one.

holie659

I disagree, but it's your life. Do what you want….each of us has the right to go about how we feel.





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Aztec Performance Ltd

iTrader: (234)

Ideal opportunity to go for an uprated lightweight forged flywheel

gaz-cole

yes with out a doubt go for a lightened and balanced flywheel

harvey

iTrader: (48)

I sell lightened flywheels but I wouldn't suggest you need one unless there is something wrong with your flywheel at this present time. The lighter flywheel will allow you to blip the throttle quicker but it will make no detectable difference to your acceleration, top speed or fuel economy.

Aztec Performance Ltd

iTrader: (234)

There is far more to a lightweight flywheel than that...

Reduced mass = better acceleration

The reason car manufacturers choose a particular weight is that it is suitable for the mass market. When tuning your car for optimum performance, what is important for Mrs Jones to go shopping in is of of little relevance.

A lightweight flywheel might not show any gains on a dyno, but the dyno does not show real world gains in acceleration as it measures max power at constant revs.

For an engine to accelerate a car, it must push the mass of the car and the engine components also need accelerating. This takes up power.

Therefore by using a lightweight flywheel, less power is needed to accelerate the internals, thus freeing up power to accelerate the car.

Reduced mass means the car will accelerate faster. In terms of characteristics, it will make the car accelerate like a lighter car (far more than just the kg saving on the flywheel). The difference is more pronounced in lower gears.

The lower you go in flywheel weight, the bigger the gains. There is a tradeoff of trickier medium speed take offs, easier to stall - if you go very light (4kgs), but if you can get used to this the gains in acceleration are worthwhile.

I run a 4.3kg forged flywheel in my daily driver and wouldn't use anything else.

6kg forged flywheels are the most popular choice with our customers as there is less of a tradeoff and suits more people.

velohead66

Yes, I've heard of lightweight flywheels, so that could be a good option.

My car goes on the track, so I am definately looking for minimum weight overall.

So what does a standard weight flywheel weigh in kg ?
What is the disadvantage of the lightweight flywheel ?



Also, my Subaru garage now tell me the problem (I cant select first or second gear 7 times out of 10) may be the gear selector.
So, it's not the clutch, after all.
I bet a gearbox is a bit more pricey than a clutch.
I guess that rules out any gearbox mods ????
The current gearbox is close ratio, which should help acceleration.

velohead66

Turns out to be the pressure plate, so the gearbox is ok, thank f***.

I will be going for the light flywheel, as they are now going to do the (75% worn) clutch.