RE: radiator cardboard

["Glen Powell" <gpowell@acacianet.com>]

   > 
   Righto!  I dont think my 4kq EVER had that bottom one. The top one 
   however is important, it will overheat without it.

All 4KQs had em (when new).

Some time ago, there was a, um, thread in this list on whether or not
the UrQ (& 5000 Turbo?) really needed the aux radiator. Back then, I came
down on the "it runs so hot it needs all the cooling capacity it can get"
school of thought, as I watch the "stock" system heat-soak the cyl head 
to well past 250F on shutdown (my gauge pegs at "just past 250"). After
a year or two of further observation, I have come to the measured con-
clusion that installing a lower-temp thermostat ("180" F or "83" C range)
and radiator fan switch ("190" F or "87" C range) with proper ("working")
radiator shrouding provide ample temp control for "normal" conditions,
in New England at least (where it doesn't get all that hot, just yucky).
I have not taken it on a track for sustained 100mph+ banzai driving, so
the jury is still out on that one . . . but I think I am convinced the
aux radiator can be punted safely ("if ya need more, ya need a lot more"
and might as well buy the mega$ higher capacity main radiator). [Now, to
get an intercooler to $tuff into the aux radiator $lot!]

EXACATLY what I had in mind! (stuffin a second IC where the aux rad wuz)

I've run sans aux rad for 5+ years in a black ur-q including 80-90 MPH runs for 1-2 hours on the MA Pike
on 95 F days with the A/C on - NO PROBLEM! Did get the oil up to 130 C though.....      :)

-glen