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Anyone Using A Twin Plate Button Clutch On A Rb20det?

RB20_ZED
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RB20_ZED Collaborator

RB20_ZED

Posted
Posted (edited)

As the title says - just wondering if anyone has had experience using a twin plate brass button on a RB20det and if the box has lasted?

Talked to a mechanic and others who say the box wont last long using a real tough clutch like that and wanna know what ppl have to say who actually have one.

Edited by RB20_ZED
FATGTS-R Experienced

FATGTS-R

Posted
Posted

I bought my car with an aggressive twin plate that had 160rwkw (rb20) and no idea how long it had been there.

Power increased to just on 200rwkw and box held up fine.

Done my fuel system and picked up car with 235rwkw and took it out for a test. After a few spirited runs through 2nd and 3rd as I pulled up to go round a roundabout a loud whine appeared in third gear. Loud like straight cut gear loud. It stayed like this for another couple thousand kays including a drag day. Back for more power and returned with 285rwkw and still didnt smash.

Went on a two hour drive cruising in 4th/5th the whole journey non stop with a light foot and as I arrived at destination the box started making a terrible grinding rattling sound. Aural analysis is a thrust bearing, wear and tear part.

I went on a bit but I have had crap tyres and treated the box kindly. No clutch kicking and no flat shifting, not once. And it survived with the twin plate and uprated power but for how much longer I dont know.

But rb20 boxes get smashed everyday with half the power and with a single plate. Its got more to how you treat it that will decide if it lasts or not.

My opinion, for the price of a twin plate clutch save a little longer and put the 25 box in at the same time.

FATGTS-R Experienced

FATGTS-R

Posted
Posted

Meaning I treated it with respect as my wallet wouldnt respect the repair bill.

The worst it got was dumping the clutch trying to launch it at the drags. When shifting I always lifted the throttle before pressing the clutch and changing gears. The method of "flat shifting" is keeping the throttle nailed to the floor and pressing clutch and shifting all the while keeping the throttle down. Puts a big shock through the driveline.

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