mightyhye

Does anyone know if a dual stage thermostat is available for the 3.0 V6?

-shawn

mightyhye

bump! does anybody know?

thanks

WATRD

Okay, educate me, I have to know...

I have never heard of a "dual stage" thermostat. What the heck is it? A regular thermostat doesn't exactly snap open and snap closed, there's some in between. And I would infer that a "dual stage" thermostat had two open positions, a fully open and a partially open. But since a standard thermostat has some degree of variabilty, what would be the benefit?

mightyhye

Rob,

From the brief research that I've done, the dual stage t-stat has two valves in it, one bigger at the regular temp. and one smaller on at a cooler temp. If the bigger one stays shut and fails to open, the smaller one stays open.

I hope I am understanding this correctly, but I hear that it makes for a more accurate and fail safe thermostat. I know a few people on this forum have used one on their 4 cylinders with great success, but I haven't yet heard of anyone using it on the 3.0.

I need to change my thermo and wanted to get the better of the two if their is one.

4Crawler

iTrader: (3)

Here's the info on the part:
- http://www.4crawler.com/4x4/CheapTri...tml#Thermostat

And the single-valve (left) and the dual-valve (right) and the gasket (bottom):


Not sure if it'll fit the V6 or not. Measure and post the OD of the t-stat and compare that with the 4-cyl part OD (52mm).

The main advantage is the smaller valve can resond to temp. changes faster than the larger valve (basic thermodynamics). So it fine tunes the coolant temp while the large valve handles the big changes.

WATRD

Interesting and very cool. Thanks for the education guys You learn something every day.

mightyhye

thanks 4crawler. I actually bookmarked your cheap tricks page and I referenced it when Rob asked me the question. When I take my old one out, I'll measure the OD and check it against the dimension you gave me for the dual stage that you used.

thanks again for the help!

highway74

I'm interested to find out as well, I'm in need of a new one.

mightyhye

has anyone tried a dual stage in a 3.0? I know they work great in the 22R, but I was wondering if there are any horror stories or success stories while using one in a 3.0.

-shawn