[QUOTE=jmz;3755014]
Quote:
Originally Posted by KTL
Keep in mind evenly divisible gears are to be avoided when possible. With a 1.000 ratio, the same gear teeth are meshing every single time.
good information but a question. Don't all the SC's have a 26/26 4th? I don't recall hearing about an abundance of 4th gear problems with those cars  |
You don't seem to hear about it all that much but it's definitely an issue. In fact it impacts all 3 of the 4th gears we've been discussing here. I've got stacks of 1.04's, 1.00's and 0.96's that are worn beyond use from this problem...
As others have mentioned, the QQ 26:26 is probably a better option if the car is going to continue to run a slightly taller 5th to allow for highway cruising. It's always a balancing act with these things. There's no really such a thing as a single best set up as much as a best compromise for the conditions.
Higher average highway speeds and more power have really changed things in recently years. It wasn't that long ago that a stock 901 "X" 0.88 5th gear was considered an acceptable highway gear. That's essentially the same ratio jmz's shop has suggested with the RO 5th and we can all agree that it's too short for the highway today. But it's still a great top gear for a short track or novice racer who isn't driving the car to the event.