[V8] V8] cooling system thermostat

[Ed Kellock]

Put in the old thermostat and the temp gauge barely got over the mark
halfway up between 50 and 100.  I'm going to reinstall the new thermostat to
verify its operation and probably be getting another new thermostat.  Sadly,
I bought this new one many months ago and through a friend with a World Pac
acct so I doubt I can return it... wouldn't ask him to do it and doubt my
local parts place would deal with that either.

FYI, a proper V8 thermostat has a tiny check valve in the edge that should
be positioned at the top when mounted in the car.  There is a similar
thermostat for the V6 engines, but that check valve protrudes more and must
be bent down a little for installation.  I believe I have the correct
thermostat in regard to this check valve/air vent thingy.

Ed


On 7/31/06, Michele_Deltergo at keybank.com <Michele_Deltergo at keybank.com>
wrote:
>
>
>
> Ed,
> I have not had a V8 thermostat in my hands though sure looks similar to
> the
> I5's.  Stats had a "stop" more or less as did most others I have seen so
> you can more or less gauge full open position.  The door only opens so far
> before hitting the lower struts.  As per my post, does your electrical fan
> kick in at 100-105C?  Even though I'm not sure of the status of my rad,
> your temps are much higher than mine under the same conditions.
> Mike
>
>
> How far should the thermostat open when it reaches its operating temp?
>
> I have an 87C thermostat in 90C water and it doesn't look like it's open
> that far, but I'm not sure how far it should open.
>
> Thermostat is a new one from that I just removed from a 90 V8 that I just
> completed the timing belt water pump etc. job on.
>
> I flushed it very thoroughly with using 8 gallons of distilled water then
> refilled with the appropriate amount of Pentosin antifreeze and distilled
> water.
>
> Yesterday it was in the low 90's and the temp gauge was at 100 or just
> above
> at steady state 45 mph and would climb to 105 at a signal or climbing even
> a
> moderate hill.  This car never ran that high before and neither does my
> other V8.
>
>
>
>
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