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Clutch Slipping...

myRB25DETT
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myRB25DETT Community Regular

myRB25DETT

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Posted

Ok, first off, i have 0/nil/no idea bout clutch..all i know is drive and go.. If u knw wat i mean.. Today, went for a charity fund dyno day, had the car on the dyno and first run, clutch slipping in 4th gear, 2nd run, had it run only in 3rd gear no slipping.. Now im on the market now looking for new clutch...i have read the "upgrading clutch section" here, read bout JB clutch, i just want some opinions from u expert first... Car is fairly standard.. Except the basic mods; full exhaust + nistune etc etc.. Car is running 194rwkw atm.. Plans in the near future, high flow turbo, bigger injectors, z32 afm, chasing for a 260-270 rwkw.. So , what clutch would i be getting then with these mods coming along Soon?? And read about upgrading the flywheel as well once u upgrade the clutch?? Anything else that i need to know ? As i want the new clutch in before the weather starts warming up..I prefer if i could buy the clutch in melbourne as i am located in melb.. Cheers guys

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boostn0199 Grand Master

boostn0199

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Well you need to tell us how much you want to spend, and whether clutch heavyness is a issue for you. Im using a exedy HHHDB for 300kw and its up to the task but is a bit heavy to drive on but for its price and the power it handles its hard to beat. You can also look at NPC clutches they are known to give good results or as you said the jim berry have a good rep for taking whatever power you need one for and still are fairly soft and driver friendly.

In regards to the flywheel it is not a necessity to upgrade you can just machine you standard one but if if you want to go for a new lighter one then yeah thats another decision for you.

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myRB25DETT Community Regular

myRB25DETT

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Money is not an issue, i just want it to be able to handle the power im getting soon, or for now 200kw.. I dnt want it too heavy.. I want something similar feel of the standard clutch would feel..And do i need to order these clutches over the internet? Any convenient shops around melbourne that i can just buy it , install , and drive out...

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89CAL Grand Master

89CAL

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Ring NPC and talk to them. They are really helpful and they make a great product

Have had my NPC 10" sprung button clutch for over a year now and it's a great clutch. It's softer then the exert cushion button I used to have and bites unbelievably well. It is still a button clutch so it takes a bit of getting used to but it's not to bad around town where I live. Also have a billet flywheel off them which is good as it has cooling slots that direct some air into the centre of your clutch.

If money isn't an issue then maybe ask about there twin plate cushion button. Sounds like a good product and doesnt cost much more then getting the single plate and a flywheel anyway (from memory)

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34GeeTeeTee Grand Master

34GeeTeeTee

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Money is not an issue, i just want it to be able to handle the power im getting soon, or for now 200kw.. I dnt want it too heavy.. I want something similar feel of the standard clutch would feel..And do i need to order these clutches over the internet? Any convenient shops around melbourne that i can just buy it , install , and drive out...

My standard clutch gave up at 200rwkw... Replaced it with a genuine excedy cushioned button and couldn't have been happier for a daily, it feels the same as stock, is rated to just over the 300rwkw mark and is a good all rounder... Any clutch place can get one of these and I fit mine in a couple of hours with a mate (plus allow an hour or so for a flywheel machine)... Was about $1300 back in the day but costs have come down I think...

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89CAL Grand Master

89CAL

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NPC organic is something like $700 delivered, good for 300kw, feels like stock clutch.

Mine was about $730 but is a 10" button instead of the normal 9.5" so is good for 400kw

There good to talk to anyway, will help you find what you need

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Checkbuzz Rising Star

Checkbuzz

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^^ +1 Just got an NPC 10" HD Organic clutch (300rwkw), thrust bearing and billet steel 6.8kg flywheel delivered for just over $1k.

I believe the clutches are modified (& improved) Exedy items with more clamping pressure and stock feel.

Mine was about $730 but is a 10" button instead of the normal 9.5" so is good for 400kw

There good to talk to anyway, will help you find what you need

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myRB25DETT Community Regular

myRB25DETT

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Posted (edited)

Just want say thank u all for all the suggestions.. I now have a JB HD clutch, organic, single plate, rated 3000-3300 lbs clamping force, with flywheel machined..rated to hold below 300rwkw.. Will be installed this week.. Cheers guys..

Edited by myRB25DETT
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  • 3 weeks later...
Abe2 Experienced

Abe2

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Posted

ok check this out i bought myself a H/D Cushion Button excedy clutch about 3 years ago for my drift cat

i go to minimum 9 events a year

so a ruff total of 27

pulled out motor/ tranny last week to do some work

i pulled out the clutch and measured the meat left on it

i emailed excedy and asked what was on them brand new

turns out i have %90 Left on there

so i blew a gear box did 27 drift days

a massive amount of clutch kicks and the good old single plate button has lived

Btw my specs are im running 320 rwkw's out of a rb25 with close to 600nm of torque

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