Jump to content
SAU Community

Recommended Posts

Hi all,

Im shopping for a new clutch and flywheel for my GTR and looking between the OS Giken twin plate series, ATS carbon and the Nismo Gmax kits.

Im looking for something that will comfortably hold around 350awkw.

The Gmax seems to be priced quite well at around 1800 delivered from Japan, i am however looking for recommendations from GTR owners on what clutches work and which once dont as I do not want something thats going to wear out in 6 months.

Any help is appreciated

Nick

  • Replies 54
  • Created
  • Last Reply

Top Posters In This Topic

I'll vouch for Jim Berry clutches however I think a more appropriate recommendation would come from Stacey & Paul (TWO.06L & DIRTGarage) who have run one of his clutches in their GTR for a LONG time with street driving and drag & circuit work. They make more than 350awkw too.

Don't buy a clutch of all things just because it has a cool Japlish sticker, Nick. Seriously.

Adrian

Guest DIRTgarage
I'll vouch for Jim Berry clutches however I think a more appropriate recommendation would come from Stacey & Paul (TWO.06L & DIRTGarage) who have run one of his clutches in their GTR for a LONG time with street driving and drag & circuit work.  They make more than 350awkw too.

Don't buy a clutch of all things just because it has a cool Japlish sticker, Nick.  Seriously.

Adrian

yeah....what he said!!

seriously, if you have ever put a jap clutch on a test bench and seen how awful they clamp down..i.e. all over the place, you would never buy one.

Save yourself some $$$ and buy a properly "built" clutch to suit your application.

p.s.make sure you have plenty of time when you give Jim a call...he loves a chat!

Guest two.06l

Quote:

Originally Posted by 2rismo

I'll vouch for Jim Berry clutches however I think a more appropriate recommendation would come from Stacey & Paul (TWO.06L & DIRTGarage) who have run one of his clutches in their GTR for a LONG time with street driving and drag & circuit work. They make more than 350awkw too.

Don't buy a clutch of all things just because it has a cool Japlish sticker, Nick. Seriously.

Adrian

Quote:

Originally posted by DIRTgarage

yeah....what he said!!

seriously, if you have ever put a jap clutch on a test bench and seen how awful they clamp down..i.e. all over the place, you would never buy one.

Save yourself some $$$ and buy a properly "built" clutch to suit your application.

p.s.make sure you have plenty of time when you give Jim a call...he loves a chat!

yeah....what they said!!

I've heard a lot about these Jim Berry clutches. They really seem to be the shiznit.

Are they mainly big singles or are they multi plate clutches?

DIRTgarage: Are you using a single or a twin for that application? Surely a twin?

Custom clutches sound expensive though!!

Guest two.06l
I've heard a lot about these Jim Berry clutches. They really seem to be the shiznit.

Are they mainly big singles or are they multi plate clutches?

DIRTgarage: Are you using a single or a twin for that application? Surely a twin?

Custom clutches sound expensive though!!

answers to questions...

yes...Jim Berry clutches are the shiznit

mainly big singles...who needs a rattly multi when you can build a single to hold 1000hp...yes 1000hp!

a single...we haven't cracked the 1000hp mark...YET!

$1100 dollars is cheap in my books

Guest DIRTgarage
answers to questions...

yes...Jim Berry clutches are the shiznit

mainly big singles...who needs a rattly multi when you can build a single to hold 1000hp...yes 1000hp!

a single...we haven't cracked the 1000hp mark...YET!

$1100 dollars is cheap in my books

yeah....what she said!

Guest Mashrock

i have an os twin plate. and i probably make about 300kw.

its nice for street. and has been thrashed apart on the track. still works fine.. i am unsure on k/m tho but i'd think its been in there for a while.

tho i thinking of going to one of the twin carbon clutches as i drove a nice track racing 33 gtr which had 25/30's, and it was so lovely! but am unsure on what carbon clutch it was..

Thanks Adrian, contrary to what you seem to think im not specifically seeking a cool jap clutch.

I have worn out a typical heavy duty unit and seen many people wear out japanese multiplate clutches rather quickly thus me posing the question.

I am aware of Jim Berry clutches and will be looking into them as a serious option

  • 2 weeks later...

A standard GT-R clutch is around $550 but since they're pretty crap don't bother. For a good dollar versus performance clutch my V-Spec is running a Adelaide Clutch Services Xtreme (or Xclutch) XHD ceramic button single plate. The pressure plate is 1260kg vs 800 odd for the standard one. There are 9 cushioned buttons and the centre is sprung too. From driving it's quite good for the street and will keep up with most sprung twin-platers for 300rwkW+. Being a high clamping single it wears the flywheel and pressure plate way quicker than a twin.(Twins don't actually clamp as hard) I paid $1300 fitted to my car in 6 Hrs. Xclutch are actually the only company who actually can pressure test clutches in Australia. When they say 1260kg, it is actually 1260kg. Sprung Xclutch twin (with flywheel) is around $2300 fitted. Australian built and good value.

As wear is an issue with any clutch, just a small word of advice:

Clutches wear the friction surfaces from the period of time before the clutch is fully engaged and spinning at the same rate as the flywheel. i.e. when you are letting the clutch pedal out and waiting for the drive to 'take up' completley. It also occurs when the torque the motor is producing is enough to override the clamp pressure exerted by the pressure plate on the clutch plate.

Contrary to popular belief, the friendliest driving style to preserve a clutch is one that uses less slipping and less babying of the flywheel/clutch plate etc.

Short of dropping the clutch from high revs and lighting them up (something I never ever do :D), getting off the clutch as quick as possible is the best thing to do.

It is also very important that the fingers that make up the pressure plate exert as equal a pressure as possible on the clutch plate(s). There's no point having 5mm of clutch plate friction surface from new and then wearing it unevenly as well as only having one side of the plate(s) clamped to the flywheel. An unbalanced driveline can present itself in many other ways. The more cheaply made clutches (including some very expensive and popular Japanese brands) don't neccessarily balance up like they should and need to be corrected right out of the box.

Lessons: Don't slip the clutch whenever possible, make sure your pressure plate (whatever the brand) clamps evenly, and get the entire clutch assembly (clutch plate, pressure plate and flywheel) balanced together prior to installation.

What a rant - hope it helps someone though.

Adrian

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • GTSBoy on your suggestion on another thread I had a look at those injectors and ended up getting them because of the quality.  Got the expensive ones.  
    • Hey guys been looking everywhere to try and find the correct gtr hood latch support part number but only found the first half and when I search with that number it sends me to an r34. The first part I found was 62515. If anyone could help me with the rest then I’d really appreciate it. Or if there’s some alternative hood latch support that would work even better cause I can’t find any for sale. (Searched on upgarage, partsouq,buyee,rhdjapan) 
    • If you've only done the upper control arms on the rear, AND you have changed their length (by more than about 1mm) to set the camber you want, then you will definitely need/want to install traction arms also. Adjusting the camber arms on their own WILL introduce bump steer and make the car unpleasant to drive. Most owners have no idea that their car could behave infinitely better than what they put up with. I'm not entirely sure what the Stageas need, but I am thinking that unless you have massive front spring rates and pretty soft rear springs, you have waaaay too much rear bar. Oversteer city, in my estimation. Combined with possible excessive bump steer from maladjusted arms, that could be a recipe for nastiness. ATR43SS2 is not a highflow. It is an outright replacement turbo. It's a little bit bigger than the largest highflow profile that Tao does. Probably a solid 300rwkW turbo where the bigger highflows will be about 30-40rwkW less. Nevertheless, we're only talking about ~300 rwkW, which is well within the abilities of the stock ECu to run with a Nistune on board. I would do so without hesitation - and I will be doing so when I get my finger out and actually get the injectors and AFM installed. But, if you would prefer to drop a whole lot more money on the ECU side, then I suspect you're looking at Haltech. The Haltech fanbois here will all spout on about all the available engine protection you can have, that you can't have with the Nistune option. And they're right. But it doesn't really come for free either. You will spend more money on extra sensors and the like, plus the work to install them. If the engine was built and therefore represented a big investment to protect, then I'd say definitely do it. If you view the current (and forever into the future) shortage of replacement engines as something to prompt similar protection, then also, do it. If you see a destroyed RB25 as an opportunity to put in a Mercedes or other V12 (like I kinda do)... then your perception of the risk/reward might differ. These are good injectors. You can also get a "better" set of the same with more flow matching, for more $$. 1000cc is where you will want to be. You will need an R35 AFM and adapter tube if you want to stay with Nistuned stock ECU. Otherwise, if going Haltech, you can ignore. As for intercooler. Just about anything will do. You're only talking about ~300rwkW. Just put a big core in there. Be aware that return flows do add significant pressure drop and will cost power and will make the turbo work harder to achieve the same goals. If you can manage a proper crossflow, do it. I'm keeping my very good return flow because I'm only expecting to be in the ~250rwkW range, and will live with whatever outcome I get.
    • I have a heap that i have collected if you want some authentic ones still. Pm me if your interested!
×
×
  • Create New...