Current 5.3 Thermostat Recommendation
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Joined: Mar 2008
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From: Pacific Northwest USA
The thermostats arrived today.
They crack open at ~179F, and are fully open by ~195F in my stovetop testing with a thermocouple. I will say, they weren't kidding about the "High Flow" marketing, the opening is massive compared to other thermostats I've used.
From the bottom of the flange mating surface to the opposite side of the bypass mating surface looks to be just over 41MM when fully extended, maybe ~42.5-43MM. Yes they have an air bleed jiggle pin as well.
They crack open at ~179F, and are fully open by ~195F in my stovetop testing with a thermocouple. I will say, they weren't kidding about the "High Flow" marketing, the opening is massive compared to other thermostats I've used.
From the bottom of the flange mating surface to the opposite side of the bypass mating surface looks to be just over 41MM when fully extended, maybe ~42.5-43MM. Yes they have an air bleed jiggle pin as well.
You mentioned 2033-180 and 233-180JV but I'm sure we're talking about the same part. I wonder what the "JV" means?
Anyhow, and FWIW, my pan-of-hot-water test results match yours except mine was fully open at about 188F. It dawns on me, though, that my kitchen thermometer might not be 100% accurate.
Also FWIW....
For reasons long forgotten I happen to have a Jaguar packaged Waxstat (EBC3577 Jaguar) laying around and tested it at the same time. This is the 190F/88C thermo. The open/closing is more gradual than the MotoRad. And it doesn't open as far. It has a jiggle pin of sorts. It's really jiggle ball in a little cup.
IMO it looks like the MotoRad is a good choice for anyone shopping around.
Cheers
DD
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