QUOTE(stownsen914 @ Jan 23 2014, 12:13 PM)
To comment on the option that Brant mentioned to use a locker diff ... I have one in my 914/6 racecar. I have been happy with it, and plan to continue using it instead of a differential. There are a couple reasons to not use a locker though:
1. If you ever intend to drive the car on the street or autocross it - cars with lockers don't like to make sharp turns AT ALL. I'm talking about the kind to pull in your driveway, park, etc. This is not an issue on the track.
2. For lower horsepower applications, the scrubbing of the inside tires that you get with a locker probably eats horsepower. For a momentum / lower horsepower car, you wouldn't want to give up the horsepower.
those are good points
and they do eat horsepower..
however interestingly enough
we have a local talent, and my builder, that did back to back tests with a locked diff in a -4 cylinder car
the car was 2 seconds a lap faster with the locked differential
I loved the driving style of the locked differential. Especially in braking..
but I am currently running a TB differential due to a discussion I had with Paul Guard and my builder both...
still a locked diff is a very economical way to make a car faster if you are willing to live with the trade offs.
they aren't easy to drive until you learn them
and I doubt most people would like them based on first impressions
they are slower at first until you learn to adapt to them