Boosted b18c.... Clutch discussion

[Webby_roller]

Hey guys,

In the final prep stages of boosting my integra and have come to a fork in the road... So I would see what everybody runs and how it all holds up and go from there...

Simple turbo set up, t3/t4, all the bits and pieces... 7psi will be run.

I am wondering what clutches people are running... I am stuck between the heavy duty exedy, and the stage 1 exedy... Looked around and havnt found much in the way of a torque comparison but if anybody knows the difference in specs?

And if any has used then and had bad experiences let me know... The last thing I need is to rip out the gear of after a few thousand K's because the clutch is dead....

[stndrd]

I would recommend an Exedy Sports Ceramic clutch. Good for 300kw and more torque thab a boosted Honda will ever produce

[DLO01]

Webby. What sort of grunt are you expecting out of it? Is it going to be street car? Is it a daily drive?

[Webby_roller]

Im looking for 200hp but down the track will want to push boost up to 9psi.... so what ever that will get around... I would say that If I got 220hp I would be more then happy... I have another mode of transport so it won't be a weekend only car, but won't be a pure daily....

[Jccck]

Good for 300kw and more torque thab a boosted Honda will ever produce

I wouldn't be so sure about that.. Lol.

Anyways,
I have an 'ACT 2MS Sprung Clutch' in mine, and it seems fairly reliable.. Supposedly good for 500WHP.
Pedal feel is pretty solid, but it's not rediculous.. And even in traffic, my knee doesn't get sore.
So far it hasn't slipped at ~400WHP, so i think it's worth the $400.

[DLO01]

Whats the engagement like on your ACT Jccck? Does it engage smoothly or shudder a little? Is it a full face or puk? Organic, ceramic?

[Webby_roller]

Some details would be good, as DL001 stated... A good comparison between clutches would be nice.... anybody running exedy??

[EKVTIR-T]

The exedy heavy duty is only a standard disc but with higher clamp rate,for boost you want something stronger with an uprated disc as well

Since its not gonna be daily I'd suggest a brass button as they hold even with repeated abuse and theyre not too expensive

that way you get the increased clamping pressure and a stronger disc pad material

[DLO01]

I agree (would rep you EKvtir-T but need to spread rep more). I would not go with the Exedy either, its not going to hold with a boosted honda. Had a Exedy Ceramic initially in my Teg and it slipped like a biach. Torque load figures blah blah are just that, just figures. Make sure you well over rate your clutch for your application. Just about any clutch will hold any power when fully engaged as one piece in unison. The problem is though when your shifting, disengaging, change gear then engaging again. That initial engagement again is the part where it will bite > engage, or fail and slip all they way to, well just all the way, lol.

[Webby_roller]

Good points there... On DLO01, what did you end up running clutch wise?

Will have a look around at some button clutches. On this topic as well, was going to pair up with a lightweight flywheel. Had one on my NA motor and loved the difference it made. Anybody on here running lightweight flywheels with their setups? Have read plenty of people from both sides of the discussion saying worth it, not worth it blah blah blah....

As its not a pure daily, the extra 'challenge' of a lightweight flywheel and clutch won't bother me so thats all good on this side....

[Jccck]

Whats the engagement like on your ACT Jccck? Does it engage smoothly or shudder a little? Is it a full face or puk? Organic, ceramic?

It has a slight shudder from slow-takeoff standing start, which is easy enough to avoid.
(Note that i have a half-weight Aluminium Flywheel too)
It's a 6-Puck, and this is the description if it helps.

"a dual or "single thick" diaphragm heavy duty pressure plate, 6 puck miba friction pads"

[Limbo]

my exedy sports organic only lasted 15,000kms, and started slipping.
I didn't launch very often even. I was also told it would hold that type of power.

I ended up going the exedy 3 puck ceramic, worked a charm.
Otherwise consider a twin plate.
It gets expensive ripping them out all the time

This was only with 172kw ATW on a dc2 LSD box

The ceramic wasn't bad to drive(will take you a week to get use to it), softer than my current organic on the Evo.
Funny thing is the organic on the Evo can take 300kwata without issue.

[Webby_roller]

Hmm... lots of things to think about... just as a reference incase anybody in the future is in the same boat, here is the email I received from exedy today:

Hi Luke

Thank you for you inquire online via our website ..

Please find below the requested Torque & Kilowatt Ratings for the following kits to suit the 1997 Honda Integra B18C2 Engine – that you have turbocharged

HCK-7111HD ( Heavy Duty Kit – Sports Tuff Series ) Peak Torque Rating @ the engine/flywheel estimated 377nm & 190kw

HCK-7111HDCB ( Heavy Duty Cushion Button – Sports Tuff Series ) Peak Torque rating @ the engine / flywheel estimated 427nm & 216kw

HCK-7111SO ( Sports Organic – Single Sports Series Stage 1 Motorsport Kit ) Peak Torque rating @ the engine /flywheel estimated 403nm & 203kw

If your vehicle Peak torque or kilowatt at the engine / flywheel is greater then the following kits you have requested we would advise you to contact our distributor NPC Performance Clutches

They can modify the clamp rating eg: increase clamp or manufacture a custom kit so suit your requirements .



Kind Regards

Carlo

Thanks for all the advice everyone... now its time to save up a bit and do it right first time...