Keven H mentioned the sizes already. The intent of this modification was to change the ratio for better gearing of higher turn motors like 17.5. We tried them on modified and while they did not seem to make a difference, they happened to be on the car when we were Worlds testing so they stayed. The other drivers have gone away from them but since the last time I raced TC was the Worlds, I still had them on my car.
Good eye! I suppose I should ask evryone this question - Would you be willing to buy a bulkhead and enlarge the motor hole on the chassis yourselves? Otherwise a new chassis would be required which which would increase the cost of the modification significantly.
Originally Posted by Nick Priest
Have you noticed the ball joints as well on the diff caps...
Would be interesting to know what sort of difference these make
Originally Posted by trdsupra88
Can someone explain where the rubber o-rings are on the top deck and what the balls are doing on the shock tower mounts???
Christer Andersson has been using extra long ball links with great success by modifiying the diff bearing caps. The ball link replaces the lower shock tower mounting screws. You just need to add a locknut on the opposing side to hold the shock tower.
This setup seems to lock the car in and can make it feel ore comfortable. I ran mine both ways back to back to back and felt that the overall speed was the same but that that standard link felt more responsive so that is what I ended up with.
This is an easy modification to make with a Dremel. You just need to take a bearing cap and grind it so that it is flat so that it accepts the ball stud flange.
I used o-rings on the front of ther rear bulkhead and the rear of the front bulkhead.