Rainz/28

iTrader: (1)

Took the car to the track over the weekend and broke it. It wont shift into gears at high rpm and barely pulls off. You can be in sixth and go into fifth and it just revs and slips then engages. Starting off the line you let the pedal all the way out and it revs barely moves then catches. So time to order a new clutch for the old girl. I have been searching for the last few days and have narrowed it down to three of them. i have searched the forums on here and a high portion are older threads and no car is the same. Its a 02 z28 with a ms4 cam head work all the bolt ons. It will be taking some launches at 4k or so a few times a month on the track and other places. The car makes in the low 400rwph but will be getting sprayed 150 or so and honestly if it will hold it i will do it out of the hole. It has umi suspension and supporting rear end pieces. I drive it hard and it doesnt' see too much street time just to shops and events. The three i am looking at is:

1. Mcleod RST street twin (mcl-6912-07)
2. monster lt1-s twin with light flywheel
3. monster stage 3 or 4

the monster 3 or 4 is much less but single disc and i hear good and bad things about the puck set up in the clutch. i am doing it myself and don't want to destroy this one in a few months and need another. If I need to spend 1200 i do and it is what it is. If you have a better option let me know you guys know what more than me.
Thanks.

HioSSilver

iTrader: (8)

None of those. Look for something light. Qtr master has some nice street clutches that reduce moi. Spec x trim is a good choice to imo and it's very light. Rps is always a great choice with their aluminum flywheel but they are very expensive.

Rainz/28

iTrader: (1)

Those are good money got to pay to play I guess.

qweedqwag

ACT makes awesome clutches do some reading about their stuff.

Mike.

Rainz/28

iTrader: (1)

Those arent bad they come with the flywheel too. I will look into them.

HioSSilver

iTrader: (8)

I have heard of them but never used them. They seem ok. I do have experience with the others i told you about.

ddnspider

iTrader: (26)

for street use RST, for track use RXT.

Rainz/28

iTrader: (1)

I like how the spec is just kinda bolt in and go no shimming or anything. Wonder how the ss-trim spec clutch is

Rainz/28

iTrader: (1)

Ddnspider i do like that mcleod and i have always heard great things about them rxt is the way to go for me the car sees more pulls then it does highways

ddnspider

iTrader: (26)

I had the RST and was cutting 1.5's @ 3800lbs and the you could tell the clutch didnt appreciate it. I wish I had gone RXT as everyone said it drove just as good as the RST but could handle the track abuse.

Rainz/28

iTrader: (1)

did you use their flywheel too? that's a great 60 too mine was slipping hard sunday and had horrible 2.5 or so lol

ddnspider

iTrader: (26)

No just an SFI approved steel flywheel.

Rainz/28

iTrader: (1)

I was thinking of a light flywheel to lose some rotating mass. It will rev up quicker but also drop quicker i know. Its drag only so maybe i should stick to steel to get it moving

ddnspider

iTrader: (26)

There are advantages to a lighter setup, but if you have the power you don't really care as much about gains from clutch/flywheel weight and launching a heavier stick setup is easier. Just depends on goals.

HioSSilver

iTrader: (8)

it's pretty much a complete myth about a steel flywheel or heavy clutch set up to get it moving. Remember that weight is only good for the initial hit. Anything after that it's just slowing you down.

taner

iTrader: (6)

Street Twin - steel flywheel

weedburner

Above statement is pretty much a complete myth on the dragstrip. A flywheel/clutch assy optimized for MOI is likely going to have problems with a proper dragstrip launch.

Grant

HioSSilver

iTrader: (8)

I still have my doubts.

But out of curiosity what do you think a optimal weight clutch/ fly combo is.

Rainz/28

iTrader: (1)

OK I'm thinking rxt McLeod with a light flywheel. My goal is 11's on spray. Which I know isn't lighting fast these days but its a achievable one.

pdxmotorhead

Random example,, I got almost 2 seconds on a 1/4 in a VW bug by dropping the 22lb stock steel flywheel and putting in a 11lb steel.. (I built the flywheel) But what I did was make sure the weight that was left was out at the rim, Bugger spun nice,, and it revved way harder though the mid range,, and was good for both front wheels off the ground for about 20',, With a basically stock 1600 CC engine,, its WAS a Baja with a 1 piece front end.. I went thorough a lot of second gear synchro's in that port transmission..

Flywheel was the only change,, ran a custom re-sprung cover with a solid disk..

It pulled harder in the sand too..