[edsotic]

Thanks for the replies E55 KEV and PKH.

I live in Sacramento and have not had any trouble with overheating, but I have also not had my car in any extreme conditions, such as track time. I wondered if extreme use was causing overheating.

The grill may be big, but part of it is covered with foam for crash protection, and even with the big grill if the radiator isn't efficient then no amount of air will help. The original Mustangs had big grills with much less power and they had overheating problems. The radiators were too small.

I also know that it takes a couple years for a car with this volume to sort out problems. Speaking of which, do any of you know of a scratching sound that comes from the engine bay when the engine warms up? I have taken mine to the dealer a couple times with this loud noise and they cannot come up with a potential cause. Their first try was to replace the alternator, but that didn't work. They have given up. It is engine speed sensitive and I can hear it best at idle (probably because other noises filter it out at speed). If I blip the throttle at idle it will usually go away temporarily? Any ideas? The only thoughts I have are really scary (scraping cam?), but there doesn't seem to be a performance issue thus far.

Thanks.

Zak