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-   -   Merc water pressure relief valve (https://www.offshoreonly.com/forums/general-q/55218-merc-water-pressure-relief-valve.html)

z.zuperboat 08-09-2004 12:05 PM

Re: Merc water pressure relief valve
 
My pressure was pinned at 35, after installed not over 25 and after removing the thermostat no water pressure.Waters 120 and oil temp takes awhile to come up to operating temp.Looking to install oil thermostats now.

Nordicflame 08-09-2004 01:50 PM

Re: Merc water pressure relief valve
 
Direction is "either"
Make sure you put it just before the crossover so that you don't loose good water flow to your oil and PS coolers. If you put it before the coolers the cooling capacity of the coolers will diminish greatly.

US1 Fountain 08-09-2004 11:16 PM

Re: Merc water pressure relief valve
 

Originally Posted by Faster!
I put mine between the sea water pump and crossover.

Where did you dump the water?

Canada Jeff 08-10-2004 06:04 AM

Re: Merc water pressure relief valve
 

Originally Posted by NordicHeat
Direction is "either"
Make sure you put it just before the crossover so that you don't loose good water flow to your oil and PS coolers. If you put it before the coolers the cooling capacity of the coolers will diminish greatly.

This is what I'm afriad of! so after the coolers, before engine block sounds about right.

Faster! 08-10-2004 06:18 AM

Re: Merc water pressure relief valve
 

Originally Posted by US1 Fountain
Where did you dump the water?

I am dumping to an existing thru hull that I had for a manual bilge pump. Will be cutting in a new thru hull this week.

Yes put it in after the coolers. Merc sends a little instruction sheet along with the part and they recommend after the cooler.

Nordicflame 08-10-2004 08:30 AM

Re: Merc water pressure relief valve
 
Must use a full 1" dump.
I dump mine right on top of the outdrive :)

MrCIG 04-26-2008 07:30 PM

TTT For Bad Medicine

ROTAX454 04-27-2008 08:54 AM


Originally Posted by klaw (Post 632049)
I know this topic has been long and a few guys have made there own water dump systems with the one now available from merc for about $100 has any one used these looks like a nice package

Merc
Water pressure relief valve
863208a3

I am about to buy a couple

What is the current cost for the relief valve? Best place to purchase?

Mr Gadgets 04-27-2008 09:45 AM

Bam has it for $275. Lot of money for plastic..

Is there decent alternative out there?

Elite Marine 04-27-2008 02:05 PM

[QUOTE=Mr Gadgets;2539601]Bam has it for $275. Lot of money for plastic..
QUOTE]

Agreed, but whats your engine worth?


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