Merc water pressure relief valve
08-09-2004, 12:05 PM
#21
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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.
08-09-2004, 01:50 PM
#22
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.
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.
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08-10-2004, 06:04 AM
#24
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Location: Ottawa, Ontario,Canada baby!
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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.
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.
08-10-2004, 06:18 AM
#25
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Re: Merc water pressure relief valve
Originally Posted by US1 Fountain
Where did you dump the water?
Yes put it in after the coolers. Merc sends a little instruction sheet along with the part and they recommend after the cooler.
04-27-2008, 08:54 AM
#28
Registered
What is the current cost for the relief valve? Best place to purchase?
04-27-2008, 02:57 PM
#30
So true. I screwed around the better part of 1 summer trying different configs to get my complete stock setup water pressure down. I was pegging my gauge at 35psi at cruise speeds, so limited myself to no more than 3000 rpm for a few months. Saved tons of gas though! 
I would lift the hatch a bit and see the large hose from the pump to the stat housing swell up tremendiously. Only time before something gives. Finally broke down and bought 2 valves. Instant cure!
I'm right at 20psi now at WOT.
The killer of this is that those valves were only $100 a few yrs ago. A little out of line to fix a design flaw from Merc, IMO.
I would lift the hatch a bit and see the large hose from the pump to the stat housing swell up tremendiously. Only time before something gives. Finally broke down and bought 2 valves. Instant cure! I'm right at 20psi now at WOT.
The killer of this is that those valves were only $100 a few yrs ago. A little out of line to fix a design flaw from Merc, IMO.
