Originally Posted by
cwoods34
For anyone using front and rear gear diffs with lower turn motors (under 17.5), what oils have you experimented with? Is 500k the standard regardless, or has anyone tried 300k or 200k? Same thing for the rear...... 80wt/1000 seems to be the starting point. Anyone have a different combination? Going to play around with a 10.5 boosted Friday........
Also, when the grip is really low (cold temperatures inside for example) would it help any going to thinner oils front and rear? Or is that something I would just compensate through setup tweaks (assuming the setup is already pretty good)?
CARPET 17.5 BLINKY: I started with my spec-r gear diffs filled with 300 front / 10k rear. (this was all the track had at the time.) This settled the car down for my driving style quite a bit over the spool/balldiff combo! I have since moved to 500k front/ 1k rear and it improved even more. I was having trouble with the rear end and over rotating. This combo has helped my ability improve immediately. I have the new associated diffs on the way so I can try those also.
Cold Temps: The guys at our track compensate with setup and leave the diffs alone. Even a few guys running boost run the same combo and only tweak setup for the most part.
Hope this helps.
