Quote:
Originally Posted by winders
The 915 was never “gated” in stock form. It does have a spring mechanism to help prevent selecting 5th/reverse inadvertently.
I use the Rennshift and love it. I recently increased the rate of the spring pushing the shifter away from the 1st/2nd plane because I had made a couple of 2nd to 1st shifts when I intended to do a 2nd to 3rd shift.
I have never used a Seine shifter setup. It seems a bit kludgy to me.
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Quote:
Originally Posted by 73pcar
Fresh rebuild of my 915 along with installing a Rennshift and Stromski coupler were transformative. Highly recommend the Rennshift.
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winders, 73pcar: when you shift from first to 2nd gear, does the shifter spring back into the 3-4-N plane or does the shifter stay in the 2nd gear? Rennshift was my next shifter, but when I removed the gates on the Seine... I was thinking maybe this is how the Rennshift or Wevo acts.
Quote:
Originally Posted by Uwon
Wevo GateShift
Plus Karsten17 915 shifter spring
Plus OEM short shift
Superb!!!
Cheers,
Johan
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Uwon: can you tell me more about this mod? So it retains the stock 915 shifter and the spring and gates are local to the tranny... this sounds like a nice setup (essentially a g50?). Where does the Karsten17 spring mount? Does this modernized the 915 as far as the guessing of where to put the shifter? Thanks for the feedback
Quote:
Originally Posted by Schulisco
I have the Seine Systems Gate Shift Kit installed on my 915 and I absolutely love it!
But - this is not only thing changing the game!
I also had to overhaule the bushings on the whole shift linkage including the shift coupler in the rear! My car already had the Porsche short shift kit.
But - and I cannot emphasisze this enough - the right gear oil is on a 915 the by far most important "component" affecting the shifting and handling comfort! If the viscosity is lower than this, e.g. 75W90 and a probably also a modern (partially-)synthtetic oil, then the required drag torque of the 915 is not available and therefore the synchros of it cannot do it's job. And this also heavily affects the shifting comfort as well as well finding the gears...far more than expected!
My recommendation is, if you do not know for sure what kind of gear oil is in yours, refill the 915 with a mostly mineral old school gear oil of SAE90 GL5 and test it again. See this video, he uses a Swepco 201, it's available in SAE90 and SAE80W90, both the SAE90 meets the specs of the Porsche recommended Shell Spirax MB90 (don't know if this available in the US, here in Germany only in unhandy and too large 20l barrels):
https://www.youtube.com/watch?v=cOV0_bt1xRY
Edit: It has to be an API GL5 oil for the 915! Don't know if AGMA 4EP of the Swepco 80W90 meets this....
Happy X-Mas!
Thomas |
I agree with you on the Seine, I did love at first, very precise... ten years later, still precise but clunky and not very organic (if that makes sense)... sometimes it feels good, but when the wing on the shifter is resting on the gates, that small distance going to the next gear is just not that smooth. Maybe the gates need some teflon coating or something... but that metal on metal and with the spring pressure on it, just now irks me... and yes all the bushings are all new. There is absolutely no slop, the slightest touch, the coupler responds to it. Agree on calibration of the coupler. Im surprised that even a 16th movement makes a big diff.
As far as oil, I did change my oil before I started ranting about the shifter... but I remember way back that all the rave was about Wolf’s Head GL-5 80w-90. But, Im a swepco fan boy, that’s what I use in the engine and tranny.