<VV> Water temps

[Jim Becker]

The heater in my Cruze can pull more heat out of the coolant than the engine 
dumps into it.  I have noticed that with the fan on the top one or two 
speeds, the engine temperature will drop.  If you start with a cold engine 
and kick the heater on, the engine never does really warm up.  I've only 
tried this in cold weather.  Without the heater running full tilt, the 
engine temperature behaves as expected, so the thermostat is working.

Jim Becker

-----Original Message----- 
From: Sethracer--- via VirtualVairs
Sent: Sunday, November 15, 2015 12:51 PM
To: jaysplace at laserpubs.com ; virtualvairs at corvair.org
Subject:  Water temps

If he was talking about water temps, perhaps Mark meant: "The higher the
pressure in the system, the higher the pressure CAN be."

Meaning - The higher pressure will discourage boiling (also dependent on
coolant chemical composition). You are correct, Jay. With stock water pumper
vehicles, I have watched the water temps trend up under load - climbing the
grapevine - then cool back down to thermostat temp while coasting
downhill. Some  of the characteristics change, depending on coolant fan 
design,
engine driven  vs. electrics. Sitting in traffic, watching a temp gauge on a
water pumper  with electric fans, can be a heart stopper! - Seth


In a message dated 11/14/2015 11:27:49 P.M. Pacific Standard Time,
virtualvairs at corvair.org writes:

On  11/9/2015 6:59 AM, MarK Durham via VirtualVairs wrote:

> The higher  the pressure in the system, the higher the
> temperature will  be.

> Mark Durham
> Hauser Idaho
> On Nov 8, 2015 6:07  PM, "Joel McGregor via VirtualVairs" <
> virtualvairs at corvair.org>  wrote:
>

I disagree.
A higher pressure system CAN run at a  higher temp without boiling.
Actual operating temperature depends on  cooling system design and
vehicle operating conditions.
Running down  the highway on a cool day, a water pumper is likely to be
running at the  thermostat opening temperature.
In traffic on a hot day, it will be running  all its fans and the coolant
temp will probably be at or above the fan  thermostat temp.
-- 
Jay Maechtlen
SoCal
'61 2-dr modified  w/fiberglass skin,
transverse 3.8 Buick V6 TH440T4 trans