HEY!!! I was looking at a forum about skylines ,and i read about people that have sequential tranny's on there cars... does anybody know about sequential
trannys for fd's....no clutch,and no geting of the gas
for shifting ...clutch only used for down shifting....

 

Bmw has new one... selonoids do the actual shifting of a std trans, trick is in the puter programing.....Carter

 

one of the ****** magazines (turbo and hi tech perf, sport compact car, one of the primedia ones) had the amemiya rx-7 on the cover... in the article on it, mentioned it had a hewland 6sp sequential gearbox... i have it laying around somewhere...

 

Quaife makes a 6-speed SMG that can fit the 7. It costs about 6 grand. I asked. It uses the clutch for downshifting which is very cool because I just hate the absence of a clutch pedal.

http://www.quaifeamerica.com/

 

HKS has one for 12k

 

Guru Racing

http://gurumotorsports.com/

 

yeah i heard of the HKS tranny I think its made by
getrag or holinger; but the price is $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
you get it...

 

Can you use the clutch for takeoffs too? I would hate paying 6k, and having the sluggish takeoffs like an autotrans...

 

The HKS is not a true sequential. It's what's referred to as a dog box, as is the GURU. Essentially it uses dog engagement gears with no synchros. Both are H pattern. Hewland has two versions, one is good for 450ft. lbs of torque, the other is 650ft.lbs I believe. Either would "work" but not without a custom bell housing, clutch setup, etc..It'd be BIG $$$. If anyone was at MADS, the rotary powered Miata that was there used the Hewland box. He quoted me $15K out the door, ready to bolt into the FD. If you do a bit of research and some of the work yourself, you could probably knock $3-5K off that price. The transmission is also MUCH shorter (Hewland) which would come in handy for anyone wanting to install a 20B further back and wouldn't want to have the shifter moved back as well. Oh, the HKS box requires a FULL teardown every 3500 miles and there are no facilities to do this in the US.

 

You can talk to soulassasin he has an HKS unit in his high HP T2


edit: now that I think about it he had it for sale not too long ago and it had just be rebuilt.

 

Other things to consider with a sequential:

- Most of the OEM implementations use logic in the ECU to sync revs on upshift/downshift. You would need to rev match manually if you don't also add an ECU that is capable of controlling the engine/transmission interaction.

- The clutch would also need to be controlled for launches, stops, and shifts

- The Ferrari implementation (maybe they have done away with this now?) uses a small lever where the gear shift would normally be to select reverse, so there may be something there to consider

- This may add a fair amount of weight to the car, as there is a fair amount of extra parts to this setup, e.g.- solenoids to control the shifting

- The Toyota Mr. 2 now has this as an option, but it sounds like a cheap version