JHR55

Posted previously that the EKS system not working well. Send the dealer for a dianogsis. Man. As expected they do not support the eks system anymore. Need tom convert bak to manual clutch.

The thing is I always thought the eks uses porsche system except for the electronic clutch. The parts list they quoted seemed to replace everything, including the clutch pumps, pressure plate, operating fork, oil reservoir, pressure accumulator to all the pipelines & hoses.

Is it true? Man the total costs is more than enough to buy a normal family sedan.

One of the members did a conversion before. Would be helpful if he or anyone can shed some light on this.

JHR55

Anyone can help? are the clutch system for the 993tt same as non turbo?

Texas993

I'm not familiar with any eks system other than Ruf's. Is that what you have?

One difference in a NA car and a turbo is that the turbo's clutch has hydraulic boost. Not sure of the other differences.

9elfmotorsports

Hi there, the EKS system was a development between sachs and Ruf. It was not Porsche based. Pedal box, control unit, shift lever, sensors were custom as were the trans case and actuator assembly as well as the wiring harness. I trained at Ruf in Germany and installed systems in the uk before I moved to the US. The turbo clutch system is very different to non turbo. It relies on pressure from the power steering pump (different from the NA car) system also has pressure accumulator and different m.cylinder set up. Along with all the fluid lines to go with. The clutch kit itself was also a different type to match spring pressure of the actuator. To convert back would be v expensive. May be worth contacting Ruf for used parts they removed, probably cheaper to go to la Porsche tho!

ca993twin

9elf,

Please don't be a stranger to this forum... you probably have some great insights and knowledge that can help all of us. And yet... only 1 post? Welcome.

9elfmotorsports

Thank you. Glad to help. Juggling new Porsche business and family time. I'll try to get on here a little more.

993MAN

Welcome. What is your Porsche business? It's always good to get new people here.

9elfmotorsports

9 Elf Motorsports check out Facebook too.

9elfmotorsports

93 Turbo 3.6, One of my favs !!!! I was at Porsche Cars GB when they were dynoing the first 3.6 with factory engine upgrade kit. Blue flame from exhaust set fire to retaining straps. I was hooked from that day forward!!!!!

JHR55

Thank all for input. yes have the RUF eks. here in singapore no one can fix it. Even if got the replacement parts. Have check with stuggart singapore. EXPENSIVE job to convert back. They have me a whole list of parts which seem to be the whole system. Thats why wondering if all that necessary.

9elf. MY problem is that can only engaged R, 1, 3, 5. the rest 2, 4, 6 is free gear. Change the joystick (under the carriage) and the reverse happen, can engage 2,4,6 but not the rest.

At lost so only option is to convert back to manual.

9elfmotorsports

EKS problems in my experience were rarely caused by faulty parts, more often by lack of maintenance. I think if Ruf had come up with a maintenance scedule for the system It would be more reliable. Changing the joystick in the transmission will not help. The joystick is a sensor that informs the control module when each gear is engaged, when the signal is received (along with other required inputs) the clutch is released.
As the linkage/joystick/syncros wear, the control unit must be informed of where the new engagement points are. This requires a laptop with correct software and a complex hexadecimal mapping sequence. Adjustments are required with the throttle linkage too as the cable stretches and linkage wears. The system is like anything else,it just needs a TLC.

JHR55

Thanks 9elf. Well problem here no one have the software anymore. Just hope to get the conversion done properly.

9elfmotorsports

Feel free to Email me estimates, I will be happy to check them over and offer any guidance if you need it. Did you talk to Ruf? I know they will send people out. Probably not cheap though, there again nor is having it converted back. Decide which option you prefer keep or convert then persue that, It may be cheaper to fly someone out than have the system converted back.

nicu

When i bought my ctr2 i converted immediately to a manual short ratio since i did not like the EKS and was concerned about break down...
pretty straight forward and not very costly at Ruf
imo car drives much better with the mannual

JHR55

Nicu, can you please enlighten me what need to be replace? all piping, pumps accumulator and clutch plate too?