New Lightweight Flywheel

[Bass Junky]

Hey ppls.

Having a new flywheel and clutch (Exedy Super Heavy Duty or something) fitted today.

Bought an Ogura flywheel weighing in at about 4.5kgs.

The old one weighed in at 8.7 kgs.

See pics below.

Yet to drive it, so I'm not sure how it feels yet.

Will let you all know when I do.

BASS OUT

[Guest Robo's]

Looks very nice, i would be interested to see the outcome in this.

How much?

[jnr32r]

im thinking of getting same flywheel and clutch, so very interested on results...

what did you pay for them ?

[nitemare5]

you can order the flywheel from takakaira for about $450 (from memory)

[BHDave]

I just upgraded to an osgiken twin plate last weekend. Stock 32gtst clutch and flywheel weighed 15kgs and the new one weighed 9kgs. I've found acceleration off boost to be greatly improved, haven't felt much difference on boost. Biggest issue is the car will occasionally stall itself when pulling up at a set of lights when the air con is off.

[pinoi_boi_r33]

yeah i'd like to know how much the ogura lightweight is after delivery from japan and taxes etc... let us know how it went.

[RBVS]

An orgura 4.5 from greenline was $579 shipped but didnt inclued import tax or gst.

I got an exedy 4.3kg for $480 from a local dealer. Is crome purple in color and has a removerable friction plate so you dont have to skim it flat if your puck wears groves in it, just replace friction plate.

[Bass Junky]

Okay,

After one evening of driving and one morning to work I have found the following (only about 30 klms).

When the car starts it makes a cool zing noise from the flywheel!!

Low revs, loaded engine, high gear about 1400 - 1700 rpm vibration/noise (more like noise) from flywheel and clutch, but this may go away with the running in of the clutch.

When cold starting, the engine settles to idle much faster and all changes in engine speed happen much faster.

Need to re-learn how to change gears as the engine drops off much faster, and can sometimes lead to messy changes, car jerks forward due to not enough revs. Method of fixing is simply change faster.

Havent done any performance based testing yet as I want to run the clutch in first.

Will keep this thread updated.

BASS OUT

[pinoi_boi_r33]

An orgura 4.5 from greenline was $579 shipped but didnt inclued import tax or gst.

I got an exedy 4.3kg for $480 from a local dealer. Is crome purple in color and has a removerable friction plate so you dont have to skim it flat if your puck wears groves in it, just replace friction plate.

i didn't know excedy made lightweight flywheels for us. 480 is damn good. Do you think excedy dealers here in melb can get it. Coz whenever i say skyline everyone has to ring around frantically to find something to tell me they don't know 15 mins later... Stupid ppl.

[Bass Junky]

I din't know either.

Speed Technology in Mitcham are Exedy dealers.

They put mine in yesterday.

Check PM.

BASS OUT

[rev210]

An orgura 4.5 from greenline was $579 shipped but didnt inclued import tax or gst.

I got an exedy 4.3kg for $480 from a local dealer. Is crome purple in color and has a removerable friction plate so you dont have to skim it flat if your puck wears groves in it, just replace friction plate.

That might be an aluminium one, they usually have a chromemolly insert for the friction area. The Ogura is solid chrome molly, it's harder than cast iron and alot stronger too. They both are nice and light.

Who sells the 4.3kg exedy ones for $480?

[Guest INASNT]

I've had the same flywheel for 2 years and its sweet. Only thing thats different is that in say 5th at about 70 km/h it makes a slight virbation.

[RBVS]

sorry my f#@k up the brand is Xclutch, I got a new pressure plate and new pucks put on my 5 puck at the same time so i think he droped the price a little but they wouldnt be more than $500 new from, Autoclutch , osborne park (perth) I highly reconmend them and he deals with lots of skylines so its simple to get parts from him. I took photos befor i put it in, ill scan them and post up mid next week. The flywheel is purple and it has aluminuim fiction section (that can be replaced) I was told it was an extremly strong set up. Ive got a 2500 pressure plate and a 5 puck button clutch so we will see.

[Cubes]

I also noticed increased vibration due to my lightened flywheel. Mine is chrome molly.

With the new engine I've been debating to stick with a stock flywheel or to use the molly one. Depends how the ceramic clutches work with the stock flywheels?

Would any 1 know if it totally rips the flywheel apart or not?

[V8eta]

Im using a 5kg trust flywheel with an exedy hd clutch, its a little shuddery on hill starts and takes a bit more rpm to get off the mark, but the engine does rev more freely which you notice on up changes and downchanges.

[T0nyGTSt]

Im using a 5kg trust flywheel with an exedy hd clutch, its a little shuddery on hill starts and takes a bit more rpm to get off the mark,

Mine doesn't like reverse, nor does it like hillstarts.

I find I need to almost hit it at 2,500rpm or so; I often sidestep it and make the car squirm sideways. People behind me must find it hilarious.

Toda is what I use. 4kg or so?

T.

[Bass Junky]

Okay,

Further reports on the flywheel.

I driven around quite a lot today and have the following to say.

NOTHING BAD AT ALL!

The car starts perfectly, idles perfectly, revs clean.

Driving took a little bit of adjusting as the car revs up faster and down faster, so between gears you must be a bit quicker to be smooth, but even if you are not the car doesn't jerk as much as you come off the clutch because the flywheel doesn't "store" as much energy. On hard changes, the car doesn't leap forward as per before, rather it just sounds more like a race car and accelerates.

Because I didn't fit a button clutch, the flywheel and clutch combo is very liveable. Easy to slip and to drive calmly.

Summing up, I would highly recommend the fitment of a light weight flywheel to your ride.

I will be taking it to Calder (along with the new intercooler) to see how I got and to evaluate the gains this coming Friday (weather permitting).

I'll let you all know how I go.

BASS OUT

[benm]

The bit i've heard so much but never understood is the "revs up quicker". I would have thought that the only way to make a car rev quicker (under load) would be to have a more powerful engine?? I can understand the revving on the downshifts but not the accelleration part.

[R33vit]

The bit i've heard so much but never understood is the "revs up quicker". I would have thought that the only way to make a car rev quicker (under load) would be to have a more powerful engine?? I can understand the revving on the downshifts but not the accelleration part.

Lighter flywheel weight take less effort to turn it Ben.. revs up easier

[pinoi_boi_r33]

yes i agree with r33vit since the flywheel is lighter its moment of inertia about the centre is less. So it takes less energy to spin it. If it takes less energy to spin it will be able to spin faster...