916 Transmision

[GeorgeRud]

Has anyone had any experience with a modified 915 transmission in their 914? I've been interested in the vellios kit, but have not heard from anyone who has actually been using it.

[RCLXT]

Ive been doing some homework on the 915 transmition for my V-8 conversion. You should talk to renegade with regards to theyre converstion kits. Even thought the transmition is intended for use with a V-8, its still attached to a 914. They have all the appropriate hardware to fit the 915 transmition to a 914, all the information you could want, and their price is pretty good to. If youre still not satisfied talk to Rennsport. http://www.renegadehybrids.com/ http://www.rennsportsystems.com/~porsche/ (respectivly)
The 915 will have rpm's vs speed similar to that of the 901 with the 7:31 ring and pinion. You can however get both 8:31 and 6:31 depending, although i would not recommend the 6:31 unless you intend to run 250 ft*lbs torque.

[Dave at Pelican Parts]

I only have experience with a single 914 that used a 915 transmission. That was two autocross runs in Tobias Olney's impressive 993-powered Six.

The car does not have the Vellios kit on it. I'm not sure the Vellios 916 kit actually makes the tranny into a side-shifter, but that would probably be a good thing if it does.

Tobias' car is definitely a tailshifter, and drove like one. The linkage felt just a little worse than a tailshifter in good shape. I only blew one shift in two autocross runs, so it couldn't be *that* awful, right?

The linkage appeared to be home-fabricated, using things like spherical rod ends, brackets used as pivot points, etc.

As I said, it's only one car, and I only drove it twice. Hope it was of some help.

Oh, and as a contrast, I have another friend who is putting "something over 300 HP" (he's now pretty cagey about exact numbers) through a 901 sideshifter in his 914-6. He has an external tranny cooler w/electric pump. He does go through pinion gears every couple of years, and he probably freshens up the tranny every year. But this is something over 250 ft-lbs of torque on a car that runs Big Track events just about every weekend--and he is *not* kind to the machinery...

--DD