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Need Help With Deciding Clutch

BMYHOE
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BMYHOE Proficient

BMYHOE

Posted
Posted

Hey guys,

just a little run down of my set up...

i have a rb30 twin cam in the build running a Gt35/40 1.06, looking at close to 400rwkw at the wheels once completed.

now the machine shop has asked me to give him the flywheel & pressure plate off the clutch im going to use to balance everything together...

& i dont have a clutch yet.

Now the box ill be running is a R33 Gtst skyline 5 speed -i may run a helical dog box from PPG once i blow this standard box.

will i need a Triple plate clutch or can i get away with a twin ??

what you guys thinkk?

Thanks.

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The Dan Grand Master

The Dan

Posted
Posted

Both our track cars make 550hp at the wheels. One a 33GTR and the other a 33GTST. Both use an NPC Bigmouth Track Single plate clutch. Various track and drag days have been done on them without issues. I have pulled both clutches out after events and they still look brand new.

We have tested them to 610hp at the wheels but anything over that and you're on your own.

You MUST run a billet flywheel!

BMYHOE Proficient

BMYHOE

Posted
  • Author
Posted

Thanks for the replies..

after doing some more homework i have noticed a few people using Jim Berry clutches such as the "full monty" setup.

i actually rang Jim up and explained to him what i need, he has suggest the full monty set up with 4000lb clamp pressure plate... sounds good..

the car will see a far few open track days...

whats peoples thoughts on Jim Berry, i have heard mostly good things about him...

tm_r33 Experienced

tm_r33

Posted
Posted
Both our track cars make 550hp at the wheels. One a 33GTR and the other a 33GTST. Both use an NPC Bigmouth Track Single plate clutch. Various track and drag days have been done on them without issues. I have pulled both clutches out after events and they still look brand new.

We have tested them to 610hp at the wheels but anything over that and you're on your own.

You MUST run a billet flywheel!

Hang on Im about to pay for and pick up my twincam rb30. Full forged engine. Modified head. Hope to make 400 kw also but my engine builder told me from the start my standard flywheel would be fine??? Is this not the case? Crank has already been balanced with my standard flywheel and my balancer. ?

BMYHOE Proficient

BMYHOE

Posted
  • Author
Posted
Hang on Im about to pay for and pick up my twincam rb30. Full forged engine. Modified head. Hope to make 400 kw also but my engine builder told me from the start my standard flywheel would be fine??? Is this not the case? Crank has already been balanced with my standard flywheel and my balancer. ?

Im going to use a standard RB30 flywheel.. thats what most have recommended..

some_cs_student Veteran

some_cs_student

Posted
Posted
Both our track cars make 550hp at the wheels. One a 33GTR and the other a 33GTST. Both use an NPC Bigmouth Track Single plate clutch. Various track and drag days have been done on them without issues. I have pulled both clutches out after events and they still look brand new.

<cut>

Is it drivable on the street? Or are these track-only cars?

The Dan Grand Master

The Dan

Posted
Posted
Just brought a Jim Berry Full Monty Clutch kit... cost me $1347.50 delivered to sydney.

Jim is a top bloke, great to deal with!

That's almost double what you'd pay for the same clutch from NPC

Hang on Im about to pay for and pick up my twincam rb30. Full forged engine. Modified head. Hope to make 400 kw also but my engine builder told me from the start my standard flywheel would be fine??? Is this not the case? Crank has already been balanced with my standard flywheel and my balancer. ?

If you value your feet and your car then yes.

May not explode like a grenade but the more over 300rwkw you are the higher the chance of it happening

I hope AT LEAST you have the turbo 25 flywheel and not using the RB30 flywheel?

Is it drivable on the street? Or are these track-only cars?

Both are street cars

Beer Baron Grand Master

Beer Baron

Posted
Posted

yeah I would think twice about using a heavy duty clutch on a big power car with a stock RB30 flywheel. do a search for jim berry clutches on this forum and check out the number of people who have had flywheel/clutch explosions using them. including one poor bloke whose car was so badly damaged it was written off with firewall and chassis rail damage (even guard and bonnet damage and engine block damage) which his jim berry clutch exploded at the start line on the drag strip with about 350kw. it's up to you buy on cars with that much power I would think a new performance flywheel would be a no brainer.

R.3.2.G.T.R Grand Master

R.3.2.G.T.R

Posted
Posted
yeah I would think twice about using a heavy duty clutch on a big power car with a stock RB30 flywheel. do a search for jim berry clutches on this forum and check out the number of people who have had flywheel/clutch explosions using them. including one poor bloke whose car was so badly damaged it was written off with firewall and chassis rail damage (even guard and bonnet damage and engine block damage) which his jim berry clutch exploded at the start line on the drag strip with about 350kw. it's up to you buy on cars with that much power I would think a new performance flywheel would be a no brainer.

exactly the reason why i skipped a rebuilt jb clutch and when nismo twin, didnt want to take a chance

tricstar Mentor

tricstar

Posted
Posted

had one of jims heavy duty singles 4200pounds clamp explode coming off the clutch a bit fast wilst rolling in second..with only 400rwhp, I'd go a multiplate and avoid the high clamp singles.

after look at the OS giken triple I'm currently running with 650+rwhp they are quality, just streetable, I'm sure the their twins with sprung centre would be very streetable

  • 1 month later...
BK Grand Master

BK

Posted
Posted (edited)

No the best clutches ever bar none are carbon triples. Massive hp handling and drives 90% like stock. They are very progressive. I really dont understand why people even bother with singles on modified cars ? Once you try an xtreme / ATS / Carbonetics (all the same) triple you will never use anything else. More progressive tha a xtreme cushioned 9 button ceramic single and handles 1400hp with 6.5kg flywheel. They really do shit on all other clutches out there.

Edited by BK

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