Rotational Mass mods...

[Bass Junky]

Okay,

Here’s my plan.

I want to make my car quick in a semi-unconventional way.

I don’t want to up the boost or do much work on the engine, I would prefer to make the engine more efficient to get the speed. Therefore keeping the look completely stock, the engine management completely stock and most probably stock boost.

I plan to go about this by lightening the rotational mass of all the bits I can. Flywheel, clutch, cam gears, pulleys, etc.

Has anybody taken this approach or had any results from these sorts of mods.

I plan to lighten the following…..

Flywheel and clutch combo

Camgears

Pulley sets on the front of the engine.

Remove clutch fan and replace with thermo.

Have I forgotten anything?

Am I wasting my time and money?

What sort of change would these mods make to a quarter mile??

Thanks in advance for any help…

BASS OUT

[strutto]

Carbon fibre driveshaft ala GT...

[Roy]

Good to see someone taking a sightly different approach to modding ther car... i suspect however it may be more expensive to adopt your approach.

Do a search for posts by Rev210, he has had good results with a similar philosophy.

[Sydneykid]

Wheels and tyres, they are 4 really big flywheels.

[Bass Junky]

Wheels and tyres, they are 4 really big flywheels.

Yep, I've already got lightweight P1 Buddy rims. Only 17" so they have less inertia than big arse wheels.

BASS OUT

[Sydneykid]

I keep hearing this term "lightweight wheels", how light is light weight? The wheel manufacurers quote width, diameter and offset but trying to find the weight of their wheels is damn near impossible.

[Guest INASNT]

I got a 4.8kg chromemolly flywheel and adj cam gear.

Revs alot nicer now!

[51jay]

]

You weigh them!!

Stock mag 16x6.5" with 205 50 16 =19.25Kg

Modena 2 17x8.5" with 245 40 17 =20KG

" " 17x9.5" with 255 40 17 =21.5Kg

Weds sports racing C005

18x8 with 235 35 18 =18Kg

18x9 with 265 35 18 =19.5Kg

[Sydneykid]

] You weigh them!!

So I have to buy them to find out what they weigh?

That is not much help when I am selecting which one to buy.

At least Speedy Wheels quote the weights of their lightweight wheels;

SIZE OFFSET STUD PATTERN WEIGHT

15x6.5 ET40 4x100 6.5kg

16x7.0 ET40 4x100 8.0kg

17x7.0 ET40 4x100 8.8kg

Very frustrating, I wish the other wheel manufacurers would wake up.

[Ronin 09]

If its any help i just got Buddy Club P1 Racing IIs in:

18x8 - 8.8kg

18x9 - 9.8kg

Not exceptionally light, but light enough I think!

Pics at:

http://www.skylinesaustralia.com/forums/sh...51&page=2&pp=25

[rev210]

Yes it's a good approach to going quicker for sure.

Keeping an eye on things thermal is good too. There are some improvements that can be made there as well.