RE: IML: colling system pressure?

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? Or 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