Sr20det 400-500hp clutch setup
 

Hey, askn what would be a reliable clutch setup for a sr20 pushn 400-500hp? Just seeing what zilvians are running/recommending...thanks



Shit just realzied this belongs in tech...my bad. Mods please move. Thank you

OsGiken has a couple Twins and Triples that would work perfectly.

ORC/OS Giken/EXEDY/ACT.

There any benefit to like 1 disc clutch vs 2 or 3 disc clutch. Obvs horse power rating but if there rated the same 1vs 2/3 disc?

I?ve just received a Mantic stage 3 cushioned ceramic single plater, good for 900 or so Nm of torque. Note the torque rating is the critical one.


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Multi plate, more expensive and complex, noise, and may get a better pedal feel.

Single plate, cheaper, simpler, less noise but may have a heavier pedal.

Also look into a proper braided clutch line, and remove all that Oem spaghetti!


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Im already braided line, and dont mind a stiff pedal. Im for as simple as possiable, less moving parts, just want something thats gonna hold and not slip

I have an ACT forsale that can hold your power brand new in box 400 plus shipping.

What trans? A stock sr/ka trans is not going to like that power level for very long. You might want to look into a 350z/370z/300zx trans.

Im asking about a clutch not which transmission ill need.

Thanks for the input

Typically clutches are rated by torque capacity.

IMO comparing a same-rated single disc to a twin disc, the twin disc will be easier to drive with more pedal modulation available. Less pedal effort, and also there will be less shock/stress to the drivetrain during fast shifting or clutch kicks etc.

There seems to be a few single plates that will do. Spec stage 3 or stage 3+ is one that will do 500+ ft lbs (which is how clutches should be measured).

Any twin plate will meet your needs.

A few items considering I have had a multitude of clutches over the years (from a ATS twin carbon carbon, to a FX500, to a stage 3 Spec, etc etc)

Disregard what people say about pedal feel for the singple plate. Unless a super heavy PP (FX500 or HD ACT for example), the single plates leg pressure are only slightly above that of a twin

However, the twin engagement is much smoother than over any single present that can handle over 400 ft lbs at the the wheels. Also, depending on twin plate, some are just inherently noise. Part of my problem is the JK41 is a noisy bitch, and account for a majority of the gear stack clatter from from the gearbox area. I would have kept my ATS twin if I had realized just how loud the CDxxx/JKxx gearstack was so loud.

My recommendation; grab a Sped stage 3 and go to town. If not, grab any flavor of twin. However, keep in mind, the metalic/or sintered based twins can also be fairly grabby,

Just to add to this, there are two factors when it comes to drivetrain shock that pertain to your clutch. How hard it grabs and it's weight. The heavier the clutch, the harder it is on the synchros. That means sometimes twins are a little harder on the synchros and won't shift as fast. OSGiken twins tend to be very light though.

A super aggressive material and pressure plate will grab harder and be harsher on the drivetrain, so it makes sense to go to a twin at some point for a little slip (manual modulation) and cushion.

Whatever you do, don't buy an unsprung clutch if you're concerned with drivetrain longevity.

Gotcha, thank you for the input, looks like i got some searchn todo..just dont wanna regret with the direction i go.

Any more info would be appreciated. seems like a well info thread for future search results

Exedy Twin disk here. 371ft/lbs of trq(Kingtalon says it’s not possible) out of my 2liter. Plenty of drag passes. They do not like to slip but it’s rated at 500ft/lbs.

Was lookn at an exedy hyper super single..... but not sure if it will hold enough for my goals

I’ve honestly just been on a similar search. The car I bought came with a competition clutch “white bunny” which is only good for 300tq tops. I plan on making more than that.
The cool part is that since it’s 240mm disk flywheel, you can use a Z32 300zx clutch, which the ACT full-face disk is good for 400tq. The six-puck is good for 525.
So that’s another option other than going twin disc.

I dare a hypersingle take 415 ft lbs at the wheels on a VET BRZ. That's a single data point however...

Hmmmm.... just tryn to get the best bang for the buc. Not sayn im cheap, just wanna goin the right direction, for a good price.

That exedy hyper single is lookn right...unless someone says hell no lol

So why are ya'll so scared of a twin disc? They're great.

Ideally I'd get an OSGiken STR, but my budget says nah on the $1700.

Im not scared, just the price.... $ is everything

Can get that hyper single stage 2 for a hella good deal. But again...if it wont suit my need i wont buy it

Use a safety factory of 1.25-1.5. If you intend to make 350trq, plan for a clutch that can hold 440ftlbs.

Look there's a point where you need to pay up for the quality parts that are going to perform at the level you need for the car you are trying to build.

Like jr_ss said, you need a clutch that is rated higher than your power level. Running say 300tq on a 300tq rated clutch is just asking to burn it up earlier than it's service life.

If you want cheap clutches, stay at a cheap to maintain power level.

Got it $1500 here i come

Unfortunately, that is the reality. I got lucky and nabbed mine for $1k. It was a $1600 clutch at the time.

If you?re anything like me, you?ll continually push the power limits. I ALWAYS want more. So I bought a clutch knowing I was going to ?grow? into it. Another factor to consider, most twin disks are rebuildable. Single disks, not so much, however there are a few you can rebuilt.

Anyway, some food for thought.

Huge benefit to a quality twin is you can get rebuild parts fairly cheap and extend the life of that clutch 2-3x over.

Yea, i have a power goal set and honestly have no need to pass that..just will cost more $ and not intrested in that. Ive spent enough.

But yea looks like good chunk of $ will be spent on this clutch

Fml I didn't pay too much attention when ordering my clutch. And I'm shooting for 400 on my 6 puck white bunny setup. There's no way the 6 puck only holds 330ft lbs. Every site besides enjuku says they hold up to 500hp. No tq rating though.

That's the great struggle in clutches. back in the day with slow spooling turbos and limited engine management, a 500hp car probably only made 330ft/lb of torque. But today they make 400+wtq haha. Whoever decided to rate clutches in horsepower was kinda dumb.

Slipping at 415tq:
#/f/showthread.php?t=630904

Now I'm reading the disk is 250mm... which is twin-turbo Z32 size. I'm going to measure mine when I get home to confirm. I'll post pics.