How Does A Heavy Duty Clutch Feel

[Toasty]

hey everyone

i am worried about an issue with my mechanic and my car. the car has just been installed with a heavy duty single plate organic and the clutch pedal is a lot stiffer.

back when i first got my car it was apparently installed with a heavy duty clutch which i paid for. my friend was driving it noticed that the clutch pedal was not very strong and wondered if the mechanic actually put one in. my friend also had a heavy duty clutch installed from the same place. and our cars are similar running rb20's except his was a ceffy and mine is an r32.

my car has only had 10,000kms on it since i bought it. a few weeks ago it made 184 rkw's. i am a drifter but have only been to about 10 track days.

so my question is, if you did have a standard clutch did it feel easier to push in then a heavy duty? i think he is being dishonest or has forgotten and i dont want to pay twice for one clutch.

thanks

[Simon-S14]

heavy duty organics are usually the stock organic clutch disk with a 20% stiffer pressureplate... so it should be slightly heavier then stock.

They are very easy to drive, being an organic full face it will be like stock but have slightly more resistance to slipping.

That said.. they wont take heaps of power`

[MrStabby]

So - was it the same mechanic both times? Are you worried you got ripped when you first got the car as the pedal was soft making you think the stock clutch was left in? Why did you replace it again after only 10,000kms?

FWIW, my organic HD was marginally stiffer than my mates stock one. Remember that better design can somewhat offset the extra pedal effort that comes with a stiffer pressure plate. Also i imagine there are difference in the pressure plates of different brands of clutch.

[Birnie]

I've had the Cushion/Button kit installed on my R33, now I'm also assuming that it was the kit that i supplied that actually went in the car..... The pedal feal is now softer than the original clutch, not that i know what the original was but i saw it removed and it looked standard. I thought the original was a litle strong and now I'm smiling big time at the relief!

Does that sound right too?

Softer feal for the semi-buton kit? (Exedy from Slide)

[cosworth1971]

some presure plates have curved forks that does a little falcrum trick

[wlspn]

I've had the Cushion/Button kit installed on my R33, now I'm also assuming that it was the kit that i supplied that actually went in the car..... The pedal feal is now softer than the original clutch, not that i know what the original was but i saw it removed and it looked standard. I thought the original was a litle strong and now I'm smiling big time at the relief!

Does that sound right too?

Softer feal for the semi-buton kit? (Exedy from Slide)

Ive gone from my stock clutch, to an Exedy heavy-duty, to an Exedy un-cushioned 5-puck brass button clutch in my R32 & pedal-feel has gotten harder after each swap. The brass button is pretty bloody heavy & you do get a sore leg in traffic. I know I have had the right clutches fitted as I work in a transmission shop & can fit them myself. Only way to be sure!

[JiN_MaN]

Ive just ordered a 5 puck with 850kg pressure plate, Its an Extreme. Ill let you know how it feels on monday when its running......... i hope.

[Simon-S14]

850 kg is only 10-20% heavier then stock... will feel about the same,

Since its a button, it will have a little more bite but wont hold much abuse, you need the GTR pressure plate option for that (1200 kg)

[Abo Bob]

I was going to say, 850 can't be very strong. I think mine has 4400kg of clamping pressure or something rediculous like that. Or maybe that's 4400 pounds. = 2000kg? Not sure.

You are all blessed with my informative post... not.

[Simon-S14]

would be pounds for sure.

a 2 ton clutch must be hell to drive.... not to mention hell on the hydralic system