Swivel Thermostat Housing

[Indycars]

Has anyone used one these swivel, O-Ring type thermostat housings? Do they seal good?

http://www.summitracing.com/parts/aaf-all30171

 

[grumpyvette]

Ive used those swivel t-stat housings several times, the seal o-rings generally seal, well and are easily replaced if damaged, the only issue I had was the t-stat housing is so tall it won,t fit in a few applications IN SOME VERSIONS ( too work with the clearances on some intakes like TPI)

http://garage.grumpysperformance.com/index.php?threads/anodes.74/#post-4123

theres two basic designs one uses an o-ring in a grooved base that seals against the manifold t-stat flange area , the o-ring is actually mounted to the center part of the neck that swivels has an extended outer round flange and the outer flange clamp part that bolts down applies pressure to the swivel neck seal and flange but never contacts the coolant fluids.
example

btw not only are there swivel thermostat housings there are also OFF-SET t-stat housings
http://www.summitracing.com/parts/wnd-90845

theres several manufacturers

the second type requires a standard t-stat gasket

and the o-ring, the o-ring seals between the upper outer flange on the inner swivel neck, and the outer flange that seats over the o-ring seal that is held in place with the outer clamp ring that has the mounting bolts applying pressure
EXAMPLE

these two pictures, below just point out common coolant flow routes

 

[Indycars]

Thanks Grumpy!

Looks like it should work well for my application.