J joey Member Joined Dec 31, 2002 RO Number 10941 Messages 42 Jul 5, 2006 #1 Anyone know the heat exchanger cap pressure rating for a Mercruiser 1988 454. I have MC part no. but no pressure rating. I guess around 14 psi. I want to replace the old cap with an aftermarket brand. Thanks
Anyone know the heat exchanger cap pressure rating for a Mercruiser 1988 454. I have MC part no. but no pressure rating. I guess around 14 psi. I want to replace the old cap with an aftermarket brand. Thanks
