HGV,

Thanks for the pointer to your thread. I had read it prior to posting and was hoping that you would weigh in on this thread as well.

I'm still curious as to whether or not this engine (603) has an equalibrium under full load. My independant mechanic claims that the cooling system is only as big as it needs to be and these engines under full load will continue to increase until the engine over heats.

Keep in mind that full load is what you have under full acceleration. Like when your testing the max boost preasure. Most of the time this is only for a few secs at a time. But in a case where you have a long climb with a fully loaded vehicle you can get max boost going for an extended period.

The other question is whether or not the viscios (SP) clutch on the fan makes a difference at highway speeds? If my clutch isn't ingaging at 105 deg C as expected would that restrict the air flow enough to make a difference at highway speeds?

Thanks,

__________________
-Mike
'87 300TD 304kmi (RIP)
'95 Toyota Camry Wagon 125kmi