----- Original Message -----
Sent: Sunday, January 25, 2004 9:49
PM
Subject: [FlyRotary] measurement
needed
Greetings,
I'm working on my new
thermostat housing, which will have a radiator cap, an AN12 outlet, and
maybe even an aux port or two for temp, pressure, or AST use. Anyway, if
I use the EWP in any form, I can't use the thermostat, but if I ever decide to
use only the mechanical water pump, I could. Since I'm doing all this at
home, and don't have a thermostat with me, I wonder if someone could measure
one for me tonight, or in the morning.
What I need to know,
is how much of a relief needs to be cut in the bottom of the thermostat
housing. I'll attach a crude paint drawing to help describe what I
need to know.
This really isn't a big
deal, but since I have it here, and can mill something out, I'll make it
possible to use a thermostat if possible.
Thanks,
Rusty (days of milling,
to be destroyed by seconds of welding)
Hi, Rusty.....I will
attempt to answer the questions. On my 1989 turbo engine, there is no relief
cut into the bottom of the thermostat housing. The relief is cut into the top
of the waterpump housing, so that the thermostat sets into the relief. (see
pictures). On my housing, the outside diameter of the relief measures
2.200 inches, and the depth is .165 inches. The thermostat has a
rubber seal that slips onto the entire circumference of the thermostat, which
does the sealing, so the bottom of the thermostat housing is totally flat.
(see pictures). Measuring from the bottom of this seal (where the thermostat
would rest at the bottom of the relief that has been cut into the housing), to
the top of the thermostat measures .825 inches. That is the dimension you have
labeled "max height of raised portion", but also includes the portion of the
thermostat that goes into the relief. If you only need the dimension of the
raised portion, not including the part that sets into the relief, just
subtract the .165 from the .825 dimension. The thermostat housing in the
picture that I had made out of aluminum has the tapered hole beginning with
the 2.200 dimension. Hope this helps? Paul
Conner
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