In a message dated 3/26/05 7:01:12 AM Pacific Standard Time, BillB@bnj.com
writes:
<< As I recall,
someone said they put a pressure gauge on the block and it was as high as 50
pounds. I don't understand exactly how that happens since the radiator and
cap are on the outlet of the pump. Seems like block pressure should be lower
than radiator pressure. The radiator constitutes a big pressure drop. Inlet
pressure can't be more than 16 pounds because that's where the radiator cap
is. >>
Looking at the diagram in the shop manual, it appears to me that the radiator
pressure should be lower than the block pressure. The pump is pulling
coolant from the bottom of the radiator and pumping it to the block. There is
a
pressure drop in the block and through the thermostat, or the restrictor
washer,
and the flow diversion of the thermostat housing. Of course, you have a
modified cooling system. I use a 16 psi cap, as I have seen almost everyone
else
use.
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