Re: IML: IMLTOO MUCH PRESSURE
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Re: IML: IMLTOO MUCH PRESSURE



Since the water will be flowing through the system, not static against
a closed system, the pressure of water out of a spigot will not be
high enough to have any effect on the head gasket.

Henry

On 2/20/07, sosmi@xxxxxxxxxxx <sosmi@xxxxxxxxxxx> wrote:

Not so fast, the cooling system water passages in the head gaskets are not
designed for 130 psi. On some of our Hi-performance boats, we had head
gasket failure , on the water passages when we saw 30-40psi (85-100mph) in
the cooling system. the cylinders did not fail.Ya'll have a nice day, Dave.

-------------- Original message --------------
From: "K. Eric Wolfe" <kewolfe@xxxxxxxxx>


Head gaskets should not be any problem as the manual calls for compression
to run between 130 and 165 pounds (from the cylinder outward).



-----Original Message-----
From: mailing-list-owner@xxxxxxxxxxxxxxxx
[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of
Frederick Joslin
Sent: Tuesday, February 20, 2007 4:05 PM
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: colling system pressure?




Just an idea. Can you bypass the radiator with a piece of hose of some
description?


Also if you are worried about the pressure, try hooking up a compressor with
the pressure regulated to less than 20 psi.


----- Original Message -----
From: therichardsonfamily@xxxxxxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: IML: colling system pressure?
Date: Tue, 20 Feb 2007 20:35:23 +0000


Here's a question for Dave, but others may have some insight as well.

My '67, 440 cid (Imperial engine) has newly
replaced freeze plugs, and a lot of casting
sand and junk in the cooling system. Prior to
doing a closed system flushing with "Cascade",
I want to get most of the garbage out using a
garden hose on the lower radiator hose, thereby
avoiding the redone radiator.

We all know 15-18 psi is what a radiator cap
opens at. However, my garden hose may be as
high as 25 to 30+ psi. Can the head gaskets,
etc. and inside of the engine take that kind of
pressure? Does anyone know what pressure
exists inside the block? O r would I be wiser
(with this old , tired engine) to just throw an
old radiator on and do a closed system flush?
Any other drawbacks to my open system flush?

Thanks for any input.

Dan Richardson
300L Family Heirloom


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 Fred Joslin





--
Henry K. Blair, Jr.
4365 Butternut Way
Roswell, GA   30075-5225
(678) 248-4903, (770) 998-4897, Cell (770) 827-7392
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