That's actually a really good way to describe it!

Yes, I have been in cars with people who have
1 - never driven an older car
2 - expect an old 915 to shift like a modern manual
3 - have little to no mechanical sympathy

and combinations of all 3!
I've watched people shift like they think they are auditioning for the next Fast and Furious movie... and then complain when something wears out or crunches.

Unless it is proved that there is the right gearbox oil filled in I wouldn't claim a 915 won't shift properly. The influence of the wrong gearbox oil on a 915 is huge! Even if no one wants to hear.

The 915 urges on drag torque provided by the gearbox oil to make the synchros work properly. If the filled gearbox oil won't provide this due to a too low viscosity the 915 won't shift properly. And no - we won't convert this thread into an oil discussion. All I want to say - follow the specs Porsche originally made. And they say use an all mineral dino gearbox oil with SAE90 GL5. And nothing else. And don't care about Porsche said later that you can use a modern 75W90. This *may* work on refreshed gearboxes but imo not on a worn box. Even on refreshed gearboxes I still would use the dino oil. Of course - with these still you won't transform a 915 to a modern gearbox. But it will then shift more likely original and more usable than before.

Thomas

Not sure about the "no damage" especially when going into first but ...
the long shifter accomplishes the same effect.

http://forums.pelicanparts.com/uploa...1705364230.jpg

Love this. Shifting into 1st, and from 1st to second is very deliberate. Took me some getting use to at first but it works.

Question for the crowd - Is it just my gearbox that requires a slight amount of leftward pressure (toward the driver) to smoothly get into gear? My 915 doesn't grind, whine, or make any noise it just seems much more agreeable to shifting into 1st with that slight amount of lateral pressure.

+1 on Zim

take time and great care learning what your 915 wants from you, and make that part of the experience

Ryan_Cunningham - this is my experience too.. but ive also found 1st to be super agreeable with a move to second gear beforehand and never a complaint.

and for whatever reason, not that 1st to 2nd is ever really problematic, its especially smooth when I apply a little forward pressure in 1st after clutch is in before rowing back to 2nd. 2 to 3, 3 to 4, 4 to 5 is much more modern feeling

My 915 always grinds with any pressure towards the driver. I imagine given the age of these cars, each one has its own “personality” Kinda what makes them cool, in my opinion.

mine works perfectly. ........ 5k investment at a reputable shop.

Yes mine does this.

Yep


... and that somebody's thinking "Who's this idiot in the Porsh making a complete stop when the light has turned green !" :)

Hope they don't run into your rear end while doing so.

So true! :D
Ant.

915 transmission speed vs rpm reference ....

3500rpm in 4th is 65 mph

Just did a quick 3 point turn on a 2 lane ... the ole' 915 slid from R to 1st with no hesistation.

Nicely surprising.

Truck oil rules.
The long shifter is da bomb.

I can’t read the rest of the responses so I have no idea where this conversation is but I’ll respond to the OP

Aim for 4000 rpm’s 3500-4500 is pretty sweet
Don’t take your foot off the gas, don’t allow the Rpm’s to drop but hold it where it is. That means you will lighten your foot but rpm’s will stay high
Don’t force the shift, but once it’s in you can roll in the juice pretty quick
1st is the worst cuz of the crawl gear
All the rest are dreamy

+1 for rennshift with long throw
Frack the nondescript OE,