At 04:29 PM 1/6/2004, gary hradek wrote:
>assuming that your thermostat is wide open, what kind
>of flow can you expect from the waterpump to the
>radiator

Found a few sets of numbers with Google that seem to live in the same
universe -- Kohler marine generator rated 9.5 gpm at 25 hp output / press
release from mfr of plastic raw material citing "up to 100 gpm" / Stewart
(mfr of aftermarket pumps for racing engines) cites "typical" 100 gpm -->
*while rejecting 200 hp of heat through cooling system,* i.e. 600+ hp
engine.  I'll guess that the Vgon pump delivers between 20 and 40 gpm to
the radiator at full output.

>as measured by removing the bleeder bolt
>completely.

I think that would almost have to be determined by experiment over a range
of conditions, it's related to too many different things.  If it's on the
input side of the radiator, for example (I think it is), a clogged radiator
would cause less flow through the system but more out the bleed opening.  I
think it would take some serious ingenuity to actually measure flow rate
without opening the system.  Living next door to a process engineer with a
Doppler flow-meter would probably help a lot...

david

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"