Would TH IS Flywheel be a touch to light for a road car?
And does anyone know where the best place to get 7 1/4" clutches from?

ATB Dan.

"only 3kg"

Then add the ring gear thats not inclueded.

I'd say it's too light. You'd have an awful idle, and poor low end drivability. Worse in a cammed engine with a race clutch. I had a similar set up in my mini, and it would idle between 800 and 1500 rpm, and was a right sod in traffic.
Although it would make you a bit quicker.

If it is a steel one it needs to be made from the right grade not mild steel, to have the right frictional properties with the clutch plate.
The seller may know what they are doing, but might just have a CNC machine and not know much about dynamics.
It needs to be balanced after a starter ring has been shrunk on.
Would not touch with a barge pole myself.

Mal

Fair enough gents, kinda along the sasme line as i was thinking, So the hunt for an 1800 flywheel continues.

ATB Dan.

i had a lightweight flywheel in my 200sx. standard flywheel is 10kg. mine was 4.5kg.

idling it was no different to standard. driving up long hills made little difference. the thing that i did notice was how quickly it revved. blipping the throttle on downshoft was very smooth, and it was very easy to match the revs

I have a 4kg std clutch one from that seller on my pinto. I think it's still too heavy and would use the race clutch version if doing again. The above about balancing is bollocks, you only balance a cast flywheel. I tick over at 1200rpm and the engine is heavily modified.

My brother has an ultra light steel flywheel in his mini, coupled with a fairly hot cam (286 scatter) and whilst the idle is a little lumpy, it's perfectly dirveable in traffic.

Just don't stick a paddle clutch on it, that's what makes traffic driving hard work.

Got a lightweight small diameter steel flywheel on my rover with a 7 1/4 sintered clutch, ticks over fine - not lumpy at all. Makes a big difference to the initial acceleration - would thoroughly reccommend

Dan,

My flywheel came from the same chap as that on ebay (and is probably the same basic pattern ) mine is 2.5kg ish + ring gear. Clutch is the expensive bit, I picked up a second hand twinplate sintered complete off a caterham owner for £150. Superclutch wanted stupid money for a new one.

Although not on the road my car runs fine with it, ran all day happily on the rolling road when mapping and the idle is not lumpy at all and it will tickover quite happily (once engine is warm - nothing to do with fluwheel!). Having it setup on injection (like mine) would probably make it idle better than on carbs - are you mj it?

Ned.

edit: iirc the material was en18 or 24 steel (one was my steel rods, other was the flywheel, can't remember which way round! both purchased from that guy)

[Edited on 22/8/07 by ned]