[DeTomaso] Front mounted A/C

[Stephen Nelson]

I don't remember seeing a reference to your vacuum method.  Searched youtube
but didn't spot it.  Can you provide a link?

Stephen Nelson
 

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of
MikeLDrew at aol.com
Sent: Thursday, June 05, 2014 8:01 PM
To: demongusta at me.com; adin at frontier.net
Cc: detomaso at poca.com
Subject: Re: [DeTomaso] Front mounted A/C


In a message dated 6/5/14 15 34 8, demongusta at me.com writes:


> Can someone define "overheating"?
> Other than the obvious - seizing the motor
> 

>>>Well, there is an optimal temperature range for an engine.   Ford says 
it's 192 degrees, but just to be on the safe side I try to run mine around 
180 degrees.

Water boils at 212F at sea level with no pressure.   But the boiling point 
goes down as the elevation goes up due to lower pressure.   A radiator cap 
adds positive pressure (13-16 lbs is optimal) which raises the boiling
point, 
so that water will stay in liquid solution up to about 260F.

Once you pass the boiling point, very bad things happen.   The water turns 
to steam, the engine cools unevenly, heat is unable to escape, pressure 
skyrockets as water turns to steam (a water droplet expands to 2500 times
its 
size when turned to steam), the radiator cap vents and dumps water on the 
ground, the heads can warp, head gaskets blow, water sprays everywhere, your
day 
is done and your engine is cooked.

Note that modern cars are designed to run at hotter temps and it's 
apparently quite common to see 230-240 degrees.   I don't own anything
modern so 
I'll stick with 180-200 thank you!

There is absolutely no reason for a Pantera to overheat.   Most Panteras 
that I've seen that were running hot, were doing so not because of any fault

with the system, but rather due to poor maintenance--the owner had not 
properly bled the air out of the cooling system.   Air is a terrible thing
to have 
in your cooling system and will lead to all sorts of problems.

While it is possible to get perhaps 95% of the air out using conventional 
bleeding techniques, a vacuum-based bleeder such as the one I demonstrated
on 
Youtube a couple of weeks ago gets you close to 100% effective and is much 
mo' bettah.

Mike