Oil temps from time attack

Dwnshift

Just so you know.... Track guys you are Prob pushin 400f and that's only 10-15 minute runs.
We hit 380 f and that was with a pump and cooler.... and have really worked to get them liveable.
Change that fluid often ..... For sure!

ChrisSlicks

I've quite literally had complaints that my car was burning from other drivers as I passed them, diff fluid smells pretty nasty when it smokes.

I change it every time I change the engine oil. I'm definitely wanting a diff cooler but drilling and tapping the pumpkin for fittings is a PITA.

If someone made a diff cover with the holes already drilled for the cooling lines that would be awesome! Hint hint, nudge nudge, wink wink.

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Hotchkis ARB | Stillen CAI | Art Pipes | Berk CBE | Stillen AP Racing Brakes | AE Performance Oil Cooler | BC Racing ER Coilovers | Doran Control Arms

phunk

Huh... Sounds like a simple enough single billet component to consider once the fuel cans are out and about.

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clintfocus

yeah thats why i really only do like 3 hot laps right now with no cooler and stock VLSD. im honestly surprised the VLSD lasted this long my car wont see the track again till after the new diff and diff cooler setup.

Shamu

Yep that's temp we got when I pulled into hot pit after 15 minutes on THill 400 on the dot. Ignorance isn't bliss! I use OS Giken fluid with OS Giken LSD it holds up remarkably well. And runs a little cooler but not much. During track days I would just run couple laps on couple laps off to manage heat. Even for time trails that worked for me. But guys who don't pay attention to rear diff heat are going to cook things nicely especially if they don't change fluid.

When I plan longer track days at hot tracks it will be my next mod but my sprints really don't stress rear diff too badly. Temps under 350 degrees mostly.

I see one main problems being lack of fluid capacity in stock diff. But cooler is mandatory for anyone running these cars seriously.

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Grant