Posted by George (in Lubbock) on Tuesday, October 04, 2005 at 7:45AM :
In Reply to: freeze plugs posted by RICHARD BOWMAN on Monday, October 03, 2005 at 11:35PM :
Richard,
As these engines were not meant to have pressurized cooling systems, the plug sealing surface is very small compared to a newer engine. They're not hard to get in right, and they usually hold just fine as long as the system isn't pressurized. They'll hold fine up to about 4-6 psi.
George