E30 318is race car

[gtatbrissy]

ok so all clutches in road car are design to slip when they are engaged, this means u can have a gradual, smooth engagement verus either on/off with a button clutch. to make a clutch slip there are 2 things manufactors do. they either put springs in the flywheel (dual mass) or put springs in the clutch disc. if u have a dual mass flywheel then u will have a solid clutch disc, and if u have a sprung clutch disc then u will have a solid flywheel. if u have a solid flywheel and a solid clutch disc then there wont be any slip and the clutch would resemble a button clutch. hope this help

[jscribble]

Like lockup torque converters. If there is no give, you get 100% lockup, which would probably make for a crappy ride on the street, but all the power to the ground asap on a track only application. Also, less clutch wear? Less slip = less wear, even if it gets the crap beat out of it.

Viable on the street? or too crazy?

[gtatbrissy]

well usually u get a much more aggresive clutch plate when u get a button clutch so u would need a beafy left leg to opperate it. so if it was just a street car i would say it was a no no. for a track car it would be ideal. also button clutches are know to chew out gearboxes like no tomorrow

[jscribble]

Lol I bet.

[longtallsally]

ok so all clutches in road car are design to slip when they are engaged, this means u can have a gradual, smooth engagement verus either on/off with a button clutch. to make a clutch slip there are 2 things manufactors do. they either put springs in the flywheel (dual mass) or put springs in the clutch disc. if u have a dual mass flywheel then u will have a solid clutch disc, and if u have a sprung clutch disc then u will have a solid flywheel. if u have a solid flywheel and a solid clutch disc then there wont be any slip and the clutch would resemble a button clutch. hope this help

Right on.  I thought all this was the case, but just wanted to verify.

So is there an easy "normal" (sprung) clutch disc that is a bolt in for this setup?  I'd have to say there is due to the fact that many of these cars in Europe don't have AC and subsequently have a different, non- dual mass flywheel (which was what I was originally going to get while over here).

[Cal_318is]

http://justjap.com/store/search.php?mode=search&page=1
thats the link to the coilovers, i got 8/10 because i spoke to simon at rx automotive. the bc racing coilovers are great for track/road use. u can change the damper so its nice and soft or really firm. the tyres are 225/50 r15. there was a fair bit of rolling/hammer use to get them to fit.
if u have any more questions just ask

Thanks. Still trying to decide what to do about suspension. Is there much work required to get the BC Racing coilovers to fit?

I have decided on 16"x8" in +20 offset with 215/45/16's, so hopefully I shouldn't have to worry too much about rubbing.

[gtatbrissy]

Its not to bad. u do need to cut and reweld the front struts. so if u know anyone who welds its a great bonus. apart from that they are pretty easy. just make sure u measure the strut diameter before u order to make sure u get the right size, there are 2 types. i think its either 57mm or 63mm, but i could be wrong

[kman]

I know this is an old thread but very keen to see at what stage this race car is at now. Cheers!