Landracing Forum
Tech Information => Technical Discussion => Topic started by: tauruck on October 17, 2015, 10:49:42 PM
-
Always on the lookout for the good stuff and seeing as I'm building the only liner in Africa
I figured I'd contact ZF South Africa for sponsorship on their 8 speed auto tranny.
I spoke to a great guy that said they'd love to help. The unit can handle 1000HP and has an overdrive of 0.667.
The only problem is that the box won't work in an aftermarket scenario. It's aligned with the VIN, key, central locking and
about 30 other components from inception.
He's looking into an alternative or maybe a race box from HQ in Germany for me.
I'm not holding my breath though but at least I won't die not knowing.
I said even a 5 speed with a good overdrive would do, I can't be fussy.
I've been lucky so far and who knows?.
-
....and has an overdrive of 0.667..
Sounds interesting :cheers:. I'd hope there were a number of overdrive ratios before you got to the .667 (at least 1) so steps after each shift were dropping the rpm's less and less after the shift.
Sumner
-
That would be terrific! Good luck!
Mike, where are you planning to run at?
-
Yep, 7th is O.D., too. 6th is 1.00. https://en.wikipedia.org/wiki/ZF_8HP_transmission
Doug :cheers: :cheers: :cheers:
-
Mike;
That ZF sounds like a great transmission. There's gotta be a way to hack the controls.
Regards, Neil Tucson, AZ
-
It seems to me that it shouldn't be that difficult to eliminate the torque convertor and change the shifting to manual control. Just don't tell the transmission there are no computers involved. :-D :-D :-D
Pete
-
Wow wonder if they can chop that down to about a foot long sure woud be nice as shortened version. :-)
-
The 6 speed automatics in later F150s are a ZF design built by Ford . 5th and 6th are OD . I'd be surprised if they handled 1000 HP .
-
If I had someone local that could bypass the computer stuff I'm sure we could do something.
We'll wait and see.
Mike, we'll be running at Hakskeen Pan here in SA.
I'm going to get hold of the guy today and bend his mind a bit.
For the most part South Africans are conservative and companies, RISK AVERSE!!!!!!.
I think it all has to do with keeping your job. Cover your Acura.
I'll keep you updated. BTW, I drove this Merc 355 AMG with a serious Brabus conversion on it Saturday.
My friend has a thing for these cars. I liked the paddle shift and the seamless shifts.
-
http://www.zf.com/corporate/en_de/products/innovations/8hp_automatic_transmissions/8hp_automatic_transmission.html
PDF attached.
-
http://www.zf.com/corporate/en_de/magazine/magazin_artikel_viewpage_22066344.html
All they did was jigger the software to make it a paddle shift only race trans. Oughta work for you!
-
After all the ECU control $hit they are just a bunch of solenoids. I've built manual shifters for electronic transmissions using micro switches that have worked great. You just need to apply the appropriate solenoids at the appropriate time. If the shift is too hard put a governor pressure de-activator switch on the shifter or just wire in a resistor for the shift quality you need. Get a full ratchet shifter that goes both ways & modify it for as many positions you need, now you can up shift & down shift.
I've done them for Allison, 4L80e & Jatco trans.
Sid.