LOOKING TO REGULATE MY WATER PRESSURE WITH SOME TYPE OF POPIT VALVE ANY IDEAS.NOW HAVE A STOCK SEAPUMP WITH A CROSSOVER AND THERMOSTAT AND PINS THE GAUGE AT 35 PSI AT THE INTAKE. EXHAUST SYSTEM IS FROM CMI-ETOPS ANY IDEAS

PM Wette Vette, he has an easy fix that works extremely well. You can keep your thermostat also.

Take that water pressure seriously, I just blew both my intake & head gasket with too much pressure. Merc has a valve
Merc
Water pressure relief valve
863208a3

About $110-00 from BAM , it's not available on regular Merc fisch, under performance section. Call Bam or use Wette Vette's system. Lower that pressure now not later. Do a search here & this are several threads regarding water pressure
Later John

Do you need a speacial gauge to test water pressure? And where do you attach it at, Im getting some condensation build up in my valve covers and I have a cross over cooling system, I wanted to check the pressure. Thanks

Heres the link with picxs and instructions on the merc valve.merc pressure relief valve

I would also check the water pressure in the block.

THE WATER PRESSURE IN THE INTAKE IS FROM THE SENDER HOLE SO IT SHOULD BE THE SAME AS IN THE BLOCK.AS TO RACINBIRDS PROBLEM CONDENSATION UNDER THE VALVE COVERS IS MORE THAN LIKELY FROM NOT ENOUGH OIL TEMP TO BURN OUT THE CONDENSATION.I HAVE TO RUN A THERMOSTAT FOR THAT REASON.