No Leak Thermostat Housing

I know it has been talked about before . . . just thought I would give a shout out to "Terry's Auto "Lab" for his no leak t-stat housing !!!

For myself, no matter a big block or small block, I have always had some sort of seepage or leakage from the factory t-stat housing . . . his unit takes all the guess work and silicone sealant, etc out of the installation ! Sure it is a bit pricey, but not having a streak from the t-stat housing on a nice clean painted engine, is way worth it !!

One note, insure you have a "smaller diameter" 80's up thermostat !! For me, it certainly is worth the expense !!!

http://www.terrysautolab.com/

Mark

for a no leak housing my vote is the NAPA cast iron unit. not chrome obviously but just a FYI

You still need to futz around with a gasket . . . O ring seals with the unit from Terry's . . .no gasket required !! I have a cast iron unit on my 74 Duster360, and it has ever so slight seepage happen over all these years . . . no matter how clean I get surfaces and level and slight bit of silicone. I like O rings . . .

Use cast iron and let silicone set up for at least 6 hours and do not do work on humid or day cooler then 60*

That's a nice waterneck but kinda pricey, I tried 3 different ones with leaks, finally bought the $34 billet aluminum one from Mancini, no gasket, just some gray RTV, no leaks!

http://www.manciniracing.com/mabialwane.html


If you buy from Napa make sure it has a lip on it to keep the hose on, mine didn't so I took it back.

Napa worked great for me too..

X3

You guys with the Napa waternecks, did it have the lip at the top to help hold the hose on? My new one did not a couple months ago, no way I'd run it like that.

I've got a NAPA aluminum neck, works great. The flange is much thicker than stock, has the hose barb.

I put one of these on my Barracuda and it worked great. The iron ones are ok, but this one is the best!

Don't mate iron and aluminum together. My steel o-ring housing warped and corroded on my aluminum pump after 5 yrs.

I have a Terry's Auto Lab T/stat housing on my Duster, have had it on there for almost 3 years now...not a single problem with it!

I tried ordering the NAPA cast housing version. They ordered it twice, both came in two different versions than the pictured one on the website, (which is the one I wanted)! Neither one would work so ordered this aluminum one off e-bag from Crankshaft Depot. No leaks, got it on one day!

Look under 440 thermostat housing

Jim

I had this problem also. I always used the Napa housings, but when I ordered one a week ago it appears they have changed venders. The one I got has a boss on it for nipple and didn't have a thick flange. To bad as they were cheap and nicely made.

Nice piece

It's 1/4 the price I paid for my car.

Here is my no leak,not a drop in 23 yrs !

Got real tired of housing leaks and trying different sealants. I've had three different race cars with the Billet Specialties housings. They use O-rings and have a nice thick base. No sealant, no leaks and no cleanup when removed. Yes they're a little pricey but no more aggravation is worth something to me.

Great to see that people are figuring out what works for them !!! For myself, on a car I try to drive 5-8k miles per year, Terry's was the choice for me !

Shame someone can't make one that looks stock