Looks like heat treating the gears and shift shafts., coupled with studding the diff nets a result of 600+ hp durability. The total cost of heat treating the tranny components and studding a diff is under 2k. Seems like a great solution to the weak points of out S2000s.

 

Racerstev did my gears for 200

 

Where can I learn about these gear sets and the folks that could help me with them? Are these ap1 or ap2 parts? My boosted car is completely fine right now, but I want to have an upgrade plan that involves the stock transmission. I already have a backup diff


Is it possible to buy used oem parts in good shape, send them to a shop that can harden them?

 

With the advances in CAD and CNC - can we entice anyone to fabricate billet s2000 transmission cases to go along with the heat treated gears? I know speed factory did a silmiar treatment for the B series transmissions and Drag Cartel made a billet transfer case for the K powered cars. I purposely have my turbo AP2 turned down for the sake of preserving the driveline.

https://www.speedfactoryracing.net/p...et-bellhousing

https://www.speedfactoryracing.net/p...et-bellhousing

https://onlinetsm.com/products/liber...t-bell-housing

 

The Quaife sequential honestly sucks to drive on the street even with the helical gears, speaking from personal experience. I really wanted one too but after actually driving one for a while, I changed my mind.

 

Yes. You can have them cryogenically treated. Then shot peened to harden surface. These 2 treatments can make the gears three times stronger.

cryo and shot peening gears

 

FWIW, I had the PPD Dogbox and it was awesome, but when I had stock AP2 trans I pre-loaded 1st gear and rolled it off the line at ATCO, I always had my best 60ft times and never really had any Transmission related issues.