Ring and Pinion

[Ron Earp]

Lightening like this picture is done for mostly drag racing. The webs that stick out will foam the diff oil and burn one down pretty quick in road race conditions.

I was just talking about that yesterday at the office. I think if it is lightened it should be radially all around with no paddles since the flats won't be doing the oil any favors. On the other hand, the videos with the transparent rear differential cover show a pretty dire situation with oil flying around in the housing.



This one looks pretty good:



And this one might be a bit extreme:


I also saw some that were castellated around each bolt hole. The oil would run into the castellations and I figured it'd get frothed up quickly. Hmm, Google images is failing me on that one.