[vasillalov]

Hi everyone,

I am planning on getting a clutch type LSD some time this spring and I am thinking about how to properly cool the diff. Even though the finned diff covers are easier and simpler, I do not think they are sufficient to properly cool a clutch type differential.

I am interested in this differential cooling kit by VAC:



Comes with pump, cooler, lines, fittings and a thermoswitch which will automatically turn on/off the cooling pump.

Has anyone played with this or other diff cooling kits on the E90?
How loud are those pumps?

[metalmind1]

Those pumps are loud. We used them on our race cars for reared cooling but have switched instead to internal pumps. I think this kit is way overkill for a street driven car; a finned cover should be more than sufficient. If you were going to the track a lot; it might be a viable option. Just my 2c

[vasillalov]

Thanks for the input. Yes, I have been going to track for the past 2 years and I plan on increasing the frequency of my track days as I am slowly turning my 335i into a dedicated track car. I think I'll probably implement a manual cut-off switch for daily driving and I'll enable the pump only when going to track events.