[TR] Radiator Cap Pressure Rating

[Bob Danielson]

I like the puking analogy.....and that would explain why the electric fan
might turn on after you've shut the engine off.  


Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
http://tr6.danielsonfamily.org 


-----Original Message-----
From: triumphs-bounces+75tr6=tr6.danielsonfamily.org at autox.team.net
[mailto:triumphs-bounces+75tr6=tr6.danielsonfamily.org at autox.team.net] On
Behalf Of Randall
Sent: Monday, August 13, 2007 8:55 PM
To: 'Bob Danielson'; triumphs at autox.team.net
Subject: Re: [TR] Radiator Cap Pressure Rating

> I understand the
> thermostat impact but what does the radiator cap do cooling wise?

The primary effect is to raise the boiling point (by about 3 degrees for
each psi); which gives you more margin before it boils over.  

Won't do much for running temperature either way, unless it's about to boil
over.  But that 13 psi cap might help keep it from 'puking' when you stop
suddenly after a run (like pulling into a freeway rest stop).

Randall
(Tedious but unavoidable disclaimer follows) 






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