sequential shifters for 911's

rolls 912 · rolls 912's Garage

I was at my mechanic on Friday. He was showing me a sequential shifter for his Porsche race cars. Very cool stuff. If anyone is interested I'll take some pics

sc_rufctr · 07-11-2011, 02:01 AM

Please do.

What gearbox are they using?

JEM911 · 07-11-2011, 03:50 AM

Can you tell me what type of box they are using?

Some details on the box would be interesting.

jpachard · 07-11-2011, 05:11 AM

The new cup cars come with sequential boxes. ~30K per box.

JEM911 · 07-11-2011, 05:26 AM

I know about the new cup boxes, I was hoping there might be another solution. $30K retrofit is a bit pricy! I keep getting tempted though, reason however stops me

rolls 912 · rolls 912's Garage

I'll get some more info for you. Im from the land of early 901's.

Here are some basic pics

porsche930dude · porsche930dude's Garage

at 30k you could swap in a hopped up superbike engine and have a sequantial gearbox more power and sound like an f1 car haha

Flieger · Flieger's Garage

Quote:

Originally Posted by porsche930dude

at 30k you could swap in a hopped up superbike engine and have a sequantial gearbox more power and sound like an f1 car haha

Hey, good idea. I would rather have a turbo Subie flat 4 than a Hyabusa engine, though.

rolls 912 · rolls 912's Garage

Apparently the servo has to be extremely precise due to the small inputs required for Porsche gearboxes. Good fun though. Love the gizmos!

Bill Verburg · Bill Verburg's Garage

They late cups also have auto blippers that rev the engines on a downshift, very neat

naparsei · 07-12-2011, 06:43 AM

At a car show in May I saw a 997 GT3RS with a sequential shifter, but not a sequential gearbox. Apparently there is someway to do this without changing the box itself. To be honest, I didn't get it.

scott.k · scott.k's Garage

oh man this is awesome, ive always wondered about swaps like this, or with a dogbox, but i always thought that it wouldnt really work with the rear engine.

THanks for posting those pictures.

I might have missed it, but did anyone say what type of gearbox this is? Looks like one off a bike, but what type? Would any one off a bike work?
THnaks
Scott

PatrickB · PatrickB's Garage

Look up Jim Copp here on the Board... I do believe he has tried this set up on one of his older model monster race cars... Pricey is an understatement though...

Arlo911 · 07-12-2011, 08:15 AM

This system retails for 3200 euros, so not that expensive for sequential shifting. As far as I know this mounts to the regular gearbox, no need to change the internals.
I doubt it works as well as a real sequential shifter, and have no idea about the shift times, but it's a nice option if that's your cup of tea.

Here's their site: SQS Racing | SQS-G Porsche

Evan Fullerton · 09:15 AM

Jim was/is running a Holinger gearbox with his 4.2L monster if I recall correctly, not the computer/electronic controlled gear shifter that translates a sequential shifter at the stick to the regular H-pattern back at the transmission that I think is being talked about here. I haven't heard of one that incorporates the clutch as well. Cartronic makes this kit for the GT3 street cars and I see no reason why one could not rig up a similar system for an early car but the benefit without an automated clutch and ability to have no lift up-shifts seems questionable.

jrolstin · jrolstin's Garage

IMO That's stupid... Sequential shifting on an H-Pattern box, give me a break! Get a cup car, and you have a real sequential shifter!

scott.k · scott.k's Garage

id like to know what shift know that is too along with what gear box?
thanks

scott.k · scott.k's Garage

heres what it is: its an attachment to the factory gearbox to make it sequential:
SQS Racing | SQS-G Porsche

SQS Racing | SQS-G Audi Quattro 01E

micheloaks · 07-13-2011, 01:23 AM

interesting...though on a more mundane level which US Porsche shop is trying to squeeze six speeds into a 901 box. Came across it earlier this year.???

JEM911 · 07-13-2011, 02:52 AM

Patrick Motorsports do a short bell housing gearbox which will / can be retrofitted. I got one of there 6 speed G50/52 boxes, with a short bell housing for my 1978 turbo body car...

you can see the box at Patrick Motorsports - Transmission > Porsche G50 Short Bell Housing

I understand that they do a 5 speed for the 901. see Patrick Motorsports - Transmission > Porsche 901 5-Speed

I really wanted to do a sequential box, but they aren't really that practical for street use. That said if they were reasonably priced I probably would have just for the sake of having one... but at 30K plus fitment and modification it would end up being a 40K job.