I have a question: When do you consider a diff cooler mandatory?
Matt[/QUOTE]
At the minimum you should run a line off the diff to an overflow tank higher than the diff for track use. This will allow the fluid to get hot and have a place to expand into then drain back. I started to run diff coolers after I saw hot the diffs temps got during track use. If you want to know for sure add a thermal couple to the diff fluid. If the fluid gets hot than 140 C ( 284 F) degrees with synthetic fluid you will need a cooler. If you are running standard gear lube the temperature is lower.
A diff cooler is a little over kill for most Pro-Touring cars. If you have over 500 HP and are going fast for long track sessions it is cheap insurance. If you are just auto-crossing I wouldn’t spend the money.
Mark
|