6 puck clutch w/ OEM KA pressure plate

[ilovecoupes]

Has anyone have experience with running a KA oem PP with a 6 puck clutch?

6 puck clutch with a OEM pressure plate for a KA.
power ~200hp
Has anyone done it? worst idea ever?


Heard some dudes with SRs run it, and works pretty good.

[float_6969]

IIRC, you have to drill the pressure plate for the dowel pins to line up.

[ilovecoupes]

I know you are physically able to use a KA pressure plate. But does anyone see a problem using an OEM one? slipping? super soft? wont hold under large boost? etc..

[float_6969]

Yes, yes, yes. In it's completely stock form, the CA18 makes about 20hp more than the KA. Chances are you've at least got an FMIC, which will put you closer to 30HP more. I SERIOUSLY doubt a KA pressure plate will grab strong enough not to slip.

Why don't you get an aftermarket CA clutch? I have a SPEC Stage 3+, and it's fairly streetable, and has held 300hp without slipping.

[ilovecoupes]

Why don't you get an aftermarket CA clutch?

Simply put, its because I have a brand new KA PP.Also, wanted stock pedal feel.

Like I said before; guys with SRs have used this formula before with success, guess it doesn't translate to the KA.

Thanks for the response float

[float_6969]

I guess I should say I would be surprised if it works, and I don't know if it would be worth the effort of all the drilling. The KA won't just drop in place with out modifying the pressure plate. Nobody that I'm aware of has done it here, so I can't say I know it won't work. When I made my last post, I forgot about you wanting to use an aftermarket disk. They use higher friction material, so as long as you're not making gobs of power, it may be alright, but you would be the guinea pig.

If you want stock feel, go with SPEC. That's exactly why I went with them, and why I will stick with them until I hit a point that my clutch doesn't hold anymore. They're actually LIGHTER than stock, which I think is nice.

[TheMAN]

forget about the pedal feel.... any pucked clutch is going to have harsher engagement... that's kind of counter productive if you're after comfort

[blownhemi]

forget about the pedal feel.... any pucked clutch is going to have harsher engagement... that's kind of counter productive if you're after comfort

You're sure you're not talking about UNSPRUNG clutches? Because I have the SPEC Stage3 6 puck, sprung hub, 500Nm specification plate, and it has completely normal, stock engagement, and I can slip it easily.

On the other hand, a friend's KA has an unsprung plate. Talk about harsh engagement, that thing is a serious PITA for normal traffic. Wouldn't want to get caught in stop-start traffic with that thing.

[float_6969]

I agree with blownhemi. My SPEC Stage 3+ is a sprung 6 puck (or maybe it's 3?). Regardless, engagement is better than my COMPLETELY STOCK Mazdaspeed Protege.

[ilovecoupes]

screw it.
buying a ACT pressure plate

[TheMAN]

haha... and you were saying you want an easy pedal? you'll never get that from ACT

[float_6969]

He's right. ACT's are infamously heavy.

[Sideways s12]

I have modified a ka pp for the single cam ca it was a spec stage one clutch you have to drill out some of the exsisting holes to make them larger so you can line them up. It worked just fine for me and I beat the s*** out of it drag racing and doing burn out and trying to drift held up fine with stock pedal feel.... Its the red car in my sig...

[float_6969]

Does the CA18E not use the same clutch as the DE?

[TheMAN]

He's right. ACT's are infamously heavy.

so much that they're infamous for stripping out input shaft gears on WRX's

exedy FTW

[float_6969]

He's right. ACT's are infamously heavy.

so much that they're infamous for stripping out input shaft gears on WRX's

exedy FTW

I'd hate to be the first few people who figured that out.

[ilovecoupes]

read their PP are pretty moderate. guess we'll find out

[TheMAN]

I'd hate to be the first few people who figured that out.

the thing is, even after people found out, there's tons of kids on NASIOC who went out and bought ACTs anyway because they either think they are some drag racing hotshot or went by what they knew from the Honda world (ACT is a very popular brand in the Honda world)

I've seen this far too often in the car business... customer gets warned to take it easy because the ACT is a snappy clutch and isn't recommended... customer says put it in anyway... a week later, car comes back on a tow truck... wonder what happened?

[TheMAN]

read their PP are pretty moderate. guess we'll find out

you probably read from the same people who said their Apexi N1 exhaust had a deep mellow sound and isn't really loud

all subjective

as far as the affordable popular brands, SPEC and Exedy are the easiest on the foot, I speak from experience

[float_6969]

LOL, I had an Apex N1 single on my S13. I think it's the reason for most of my hearing loss, LOL!

[Sideways s12]

Does the CA18E not use the same clutch as the DE?

You know I'm not sure... I do need to make a correction to my post it was an XTD Clutch for the Dual Cam Ka not the Spec clutch but I'm assuming it wouldn't matter the bolt pattern should be the same...