The "White Bunny Special" was first created and explained by s14turbose, the "white bunny" being his 98 S14 turbo SE. KA24's come stock with a 225mm clutch surface area, but using parts from other nissans allows you to run a 240mm clutch, which by logic gives you more tractable area for the clutch to grab onto thus reducing the chance of slippage.

We used the flywheel of a 1993 D21 Pickup(4 cylinder model), which is the standard flywheel to use because it carries the same crank bolt pattern as our cranks but is a 240mm flywheel. I believe any year will work, 87 being a common year people use but to play it safe use the 93 because I just installed one and it fit fine. There is also talk of lightened 240mm flywheels, but I have yet to see any that arent custom made.

Now the pressure plate and clutch disc are varied. We used the stock setup of the afor-mentioned 93 D21, but common clutches used are off the 280Z Turbo, the 300ZX Turbo, and the RB series clutches. You can use both aftermarket and stock as long as it is 240mm. But one rumor surrounding this special is the truck and 280Z clutch can hold balls of torque, some saying near 400ft/lbs and they still retain stock pedal feel and longer life than aftermarket clutches. I'm still searching for the answer, but I read it went on Mike Lee's T66 KAT, and it had no problems holding 500rwhp.

One very important point is that the 240mm clutch uses 9bolts to hold the pressure plate onto the flwheel, while your stock uses 6. Be sure to pick some up before you attempt this. Also, you'll have to break the small pin on the crank off to bolt up the flywheel, as it has no slot for it.

and of course here are the comparision pictures:

this is both setups(225mm and 240mm) set beside each other

example of size difference

Update:installation pictures

White bunny test video

after about 2 cans of brake cleaner still had 2more to go

as a result of not running my dust cover this happen. i thought it would help with cooling, but was I wrong..................yup

more size difference pics



tools used to remove old worn pilot bearing for act bearing




putting new setup on

the little bulge that you see at the bottom of the dust cover is what the flywheel will grind down. when the noise has stopped, you will be able to insert your bolts at the bottom of the bell housing. after that, more noise will sound for about 1 minute. after that your all go.

My pictures ( total price $215 dollars)

Modified by Biggamehit at 6:59 PM 2/9/2007

Modified by Biggamehit at 7:36 PM 2/17/2007

i was also going to add a staged clutch to the mix which in theory would boost the durability up even more, but gotta be a good boy and pay of debts LOL.

Aaron

D-Max, Super Made, Damd, ETC. Ask here.

Black Subaru club check in

FS: DOHC KA24DE Timing Chain Kit, OEM(yes real Nissan) Brand-New! eMail me.

Quote, originally posted by Bwana »

Bigger = better, proven yet again...

That's what she said!

Now carrying Nardi and Personal steering wheels and Works Bell hubs! Also new, SPLPARTS adjustable arms and much much more!

gotta love the larger friction area tho.

If so.. thats a hell of a deal for a set up that can handle 500lb/ft torque. ITs bigger, better, and CHEAPER!!!

flywheel=71 dollars
clutch kit=134 dollars
act pilot bearing and TO bearing= 10 bucks and some change

ill put this to the test after i break it in. im hitting the dyno, can't wait

well i was able to put all of the miles on the clutch in philly on the way home i really put it to the test.

as you know my wastegate has a 8lbs spring. it was cold on the way back and i think the line slipped off or was punctured. so when i went to test the clutch the car spiked up to 15 psi for a second and the clutch held every damn bit of it. 215 bucks well spent lol

SAVED!!!

Phew!!

Haha, I'm jealous of you Biggamehit.

dude

yesterday was cool and bad at the same time.

my original turbo developed a case of shafto play lol so i had an z31 T3 laying around, i put that on the night before the trip, the seals blew on my while in philly. lets just say my bov was spitting oil all over my gotdamn engine bay, it was that bad.

ill have another turbo by this weekend.

the white bunny setup is HEAVY, i didnt it vs stock stuff.

i may just run this again though..
can just d21 autozone special hold upto 500ft/lbs of tq?...

This is funny because the white bunny is now the "Murcielago Pearl Yellow Bunny"

Hah!

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Modified by ppctx at 4:58 PM 7/11/2007

Edit: This is "240SXAddict". big, you only used one of my pictures! Haha. And I really dont agree with letting the flywheel grind away at the plate. Shards of metal + clutch = something I don't want to deal with. Our install went into a buddies coupe that didn't have the shield. This setup is perfect for guys with relatively low numbers who want a near stock feel but a clutch that will last them a very long time. But this setup kicks the stock setup's ***. And if you're shooting for bigger numbers, just add an aftermarket clutch kit with a higher stage to the "larger" flywheel

And no, it will only work on the SR20 if you can find a flywheel with the 240mm surface and the correct flywheel "bolt pattern"

Modified by Topless_92 at 8:39 AM 7/12/2007

sorry for the late reply. This is Ryan Yap's (white bunny) conception. I was just the first to have it in my car. I made 55X RWHP and 47X RWTQ and i've had very good luck with the clutch. With that said I hardly launched the car but I did plenty of beating on the car once it was moving. Ask anyone who really knows me... I can't stay out of the throttle. I'm currently rebuilding for more power so I got a chance to pull it apart and it looked pretty good. ..... Remember the "real" white bunny had a aluminum flywheel (custom) and a ACT Z32 non-turbo street/strip disk and pressure plate. It was also lighter than stock with that combo. Anyhow I remember Ryan saying the D21 flywheel didn't fit the KA24DE so he had a custom flywheel made... so it might just be on the KA24E that it works?

If this works it looks like a great budget clutch but if I now believe the better solution is a chromoly (lighter and stronger) RB20 flywheel with any aftermarket 350Z clutch.

FWIW,
Mike Lee

btw you can use a Z32 TO bearing. It's much stronger.

Modified by t66240 at 4:28 PM 7/12/2007

Mike Lee
mlee03@vtaig.com
http://www.infinitipartsusa.com
http://www.everythingnissan.com

280ZX 78-83 2+2 non-turbo
280ZX 1979 2+2 turbo
300ZX 84-1/31/89 non-turbo
Pathfinder 86-89 2.4
Pickups 2.0 83-89, 2.4 83-12/31/96

Years Make Model Engine Type Liter Size
1987 - 1988 Nissan 200SX V6 3.0000
1975 - 1978 Nissan 280Z 2+2 L6 2.8000
1978 Nissan 280ZX 2+2 L6 2.8000
1980 Nissan 280ZX 2+2 L6 2.8000
1982 - 1983 Nissan 280ZX 2+2 L6 2.8000
1981 Nissan 280ZX 2+2 GL L6 2.8000
1984 - 1989 Nissan 300ZX V6 3.0000
1984 - 1989 Nissan 300ZX 2+2 V6 3.0000
1983 - 1985 Nissan 720 Pickup L4 2.0000
1983 - 1985 Nissan 720 Pickup L4 2.4000
1986 Nissan 720 Pickup L4 2.4000
1986 Nissan D21 Pickup V6 3.0000
1986 - 1994 Nissan D21 Pickup L4 2.4000
1987 - 1989 Nissan Pathfinder L4 2.4000
1994 Nissan Pickup L4 2.4000
1996 Nissan Pickup SE L4 2.4000
1995 Nissan Pickup Short Bed E L4 2.4000
1994 - 1996 Nissan Pickup Short Bed XE L4 2.4000
1994 - 1996 Nissan Pickup XE L4 2.4000

Q: I'm quite positive that most people reading know quite a bit more about this topic than I do, but I've read a crap load of "white bunny" threads and no one has said that the flywheel required modification. There was a mention of a small post needing to be broke off (with minimal force by hand) the housing the flywheel goes into?

if that dont work search "KA24E/DE White Bunny Clutch Setup" on 240sxforums

This is "240SXAddict"... and I already answered your question on 240SXforums...

the "pin" broke with a tap of a wrench, it's not important.

and the write up was just meant to be a base concept for KA24 owners to upgrade from. If you're buying a new clutch/flywheel, might as well make it bigger!