No, it restricts the flow to the head. I studied the way the coolant
circulates; the waterpump pumps coolant through the tube under the carbs
into the heater and then from the heater into the intake manifold and then
into the head.
But you have to have the heater set of Hot to fill the system of course even
if you have the valve installed.
Mike
----- Original Message -----
From: "Patrick P. Castronovo" <slick1@mohaveaz.com>
To: "datsunmike" <datsunmike@nyc.rr.com>; "Adam Bradley"
<ambradley@yahoo.com>; "datsun" <datsun-roadsters@autox.team.net>
Sent: Friday, June 08, 2001 10:08 AM
Subject: Re: I'm a dummy and I hate the electric fan
> I think what happens is the amount of water is reduced in the cooling
system
> when you shut the heater down. Pat
> -----Original Message-----
> From: datsunmike <datsunmike@nyc.rr.com>
> To: Adam Bradley <ambradley@yahoo.com>; datsun
> <datsun-roadsters@autox.team.net>
> Date: Friday, June 08, 2001 6:24 AM
> Subject: Re: I'm a dummy and I hate the electric fan
>
>
> >Adam,
> >
> >If you don't have that valve on your car which is mounted on the intake
> >manifold that shuts off the coolant flowing to the heater core I highly
> >recommend that you leave the heater on HOT at all times.
> >
> >I removed that valve and noticed my head temps would soar with my heater
> set
> >to COLD. The coolant doesn't flow around the head. Some have called me
> >insane for saying that but I know what my temp gauge says. If you set it
to
> >defroster it really doesn't throw off much heat.
> >
> >Mike
> >
> >Mike
> >
> >----- Original Message -----
> >From: "Adam Bradley" <ambradley@yahoo.com>
> >To: "datsun" <datsun-roadsters@autox.team.net>
> >Sent: Thursday, June 07, 2001 6:49 PM
> >Subject: I'm a dummy and I hate the electric fan
> >
> >
> >> OK, I blame this all on someone else because of course I'm never at
> >> fault for anything. I was using a screwdriver to open the thermostat
> >> when refilling the radiator. Somehow I bent the thermostat so its rod
> >> didn't face up anymore, but rather sideways. Restricted the flow of
> >> water, which caused it to overheat.
> >>
> >> But all is not well yet. With the thermostat "repaired", it didn't
> >> completely overheat but got very hot. With the thermostat out it's
> >> running about midway between the F and 250, maybe about 215 or 220
> >> degrees. I believe this is pretty accurate as the tempurature has been
> >> tested before and the gauge agreed with the real thermometer.
> >>
> >> So... should I drive my car all the way to SF with it running this hot,
> >> if it doesn't get any hotter? Will I do any damage?
> >>
> >> Adam
> >>
> >> =====
> >> Adam
> >> '70 1600 SPL311-28181
> >> http://www.picturetrail.com/abend
> >> Get personalized email addresses from Yahoo! Mail - only $35
> >> a year! http://personal.mail.yahoo.com/
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