28-08-2014, 06:07 AM
You've taken that out of context buddy, ally sumps cool the oil much better, that's obvious! I mean covering the sump with a sump gaurd will make it run hotter and it'll be more noticeable if you've got an ally sump rather than a tin one. The loss of airflow around an ally sump will lose it a lot of it's cooling capability, it won't affect a tin sump as much as they're a much poorer conductor with less surface anyway.
I've run tin and ally sumps on my sump guarded rally car so this is from experience and not just a theory. I now run a tin sump with a huge oil cooler, I prefer the Tin sump as if I had a huge hit under the car the sump guard could smash an ally sump but would probably only dent a tin one. Plus the thinner tin sumps give more ground clearance anyway
I've run tin and ally sumps on my sump guarded rally car so this is from experience and not just a theory. I now run a tin sump with a huge oil cooler, I prefer the Tin sump as if I had a huge hit under the car the sump guard could smash an ally sump but would probably only dent a tin one. Plus the thinner tin sumps give more ground clearance anyway