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 ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm Fred Joslin
-- Henry K. Blair, Jr. 4365 Butternut Way Roswell, GA 30075-5225 (678) 248-4903, (770) 998-4897, Cell (770) 827-7392 henryblairjr@xxxxxxxxxxxxx henryblairjr@xxxxxxxxx ----------------- http://www.imperialclub.com -----------------This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the
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