Temperature & Temp Gauges

Jdpber · **Posted:** Thu May 29, 2014 1:22 pm

NiagaraChillin wrote:

SteveinLA wrote:

Even $28 is more than double what a quality t-stat is for a car/truck.

Yeah, a T-Stat for a Ford 5.0 in a 'stang only costs $2-3 bucks, but a Ford 5.0 in my boat, $26. Prob cause it is a "specialty" part made for lower temps. Oh, and of course it says MARINE on it, so immediately the price is quadrupled, lol...

you got that right

LouC · **Posted:** Thu May 29, 2014 3:07 pm

Jdpber wrote:

NiagaraChillin wrote:

SteveinLA wrote:

Even $28 is more than double what a quality t-stat is for a car/truck.

Yeah, a T-Stat for a Ford 5.0 in a 'stang only costs $2-3 bucks, but a Ford 5.0 in my boat, $26. Prob cause it is a "specialty" part made for lower temps. Oh, and of course it says MARINE on it, so immediately the price is quadrupled, lol...

you got that right

Some people use these things raw water cooled in salt water . The car stat will last about 2 months before it rusted up solid...
The engines should ALL be closed cooled then you wouldn't have chronic stat issues...

SteveinLA · **Joined:** Mon Apr 28, 2014 10:04 am **Posts:** 50

I suppose I'm the exception as my boat has never been in salt water.

My 5.0 is a an EFI engine, so if they spec out a 140* that's what I'm putting in. I don't get it either, but the system is balanced for 140*... so 140* it is.

Thanks for the opinions.

Jdpber · **Posted:** Fri May 30, 2014 12:22 pm

im 5.0 efi fresh only...

IO should be closed system if in salt.. i have a buddy that runs his IO in salt and he replaces things constantly.. inboards designed for salt asr designed diff than these IO and thus they can run in salt.. my opinion do as the manufacture designed the motor for..

Vintage Beauty · **Posted:** Fri May 30, 2014 10:32 pm

My merc runs a 140 degree stat too. I picked a new one up on Amazon this spring: http://www.amazon.com/dp/B000N9RCJ0/ref ... 00_TE_item

LouC · **Posted:** Sat May 31, 2014 5:02 pm

I'm of the opinion that all inboards should be closed cooled even in freshwater. Cast iron still rusts then it just rusts more and faster here in the salt pond. GM and Ford designed these engines to have antifreeze with corrosion inhibitors in them, not raw water with whatever level of salt/minerals/etc in them. Its because of how cast iron rusts, it flakes off in sheets that that clogs cooling passages causes thermostats to stick open etc. Outboards are made of aluminum partly because when alu corrodes it creates a protective layer but does not slough off like cast iron.

boater · **Posted:** Sun Jun 01, 2014 12:32 pm

New thermostat in and back to normal at 170ish.
We thought we heard a weird noise when we were out and the temp dropped
but never made the connection with the temp. Looked like our spring had sprung on the old thermostat.

SteveinLA · **Joined:** Mon Apr 28, 2014 10:04 am **Posts:** 50

I had my boat out yesterday. It ran at just under 150*.

www.iFourWinns.com

Temperature & Temp Gauges

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