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Installing an OEM Thermostat Housing. #1561445 01/10/14 02:25 PM 01/10/14 02:25 PM
Joined: Feb 2007 Posts: 339 Irwin, PA 62BT409 OP enthusiast
62BT409 OP enthusiast Joined: Feb 2007 Posts: 339 Irwin, PA	Now this might sound a light on the lite side but I have had a few different answers over the years. And I am getting tires of always having to reinstall an OEM and an aftermarket thermostat housing that leaks quickly or over time (not a long time)I have been advised to just go metal to metal with silicone, OEM gasket with silicone, aftermarket runner gasket - metal to metal and I can go on. Probably should make this a "pool", but I won't. Any ideas and your thoughts.

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561446 01/10/14 02:34 PM 01/10/14 02:34 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	(1) drawfile (A)the stat housing & (B) the intake or pump housing flat with a wide fine file & use a rag to keep filings out of (B). (2) gasket sprayed with Permatex 99MA "high tack" the red stuff in the spray can. Goes on light/even & is extremely tacky & seals very well. (3) see #1 & if it's a chrome housing get the chrome off of there & people have good luck with the NAPA iron stat housings live every 24 hour block of time like it's your last day on earth

Re: Installing an OEM Thermostat Housing. [Re: RapidRobert] #1561447 01/10/14 02:59 PM 01/10/14 02:59 PM
Joined: Feb 2007 Posts: 339 Irwin, PA 62BT409 OP enthusiast
62BT409 OP enthusiast Joined: Feb 2007 Posts: 339 Irwin, PA	That is coming up as an ALL-PURPOSE SPRAY. "Product ID : 99MA - Category : Shop Supplies - Permatex PERMATEX� Spray Adhesive�Dries clear with superior bonding strength. �For permanent or repositionable applications. �Unique formula resists water, humidity. �Applications include porous and non-porous materials. �Level 3 Suggested Applications: �Excels at attaching upholstery cloth, carpeting, floor mats, insulation, kick and silencer pads to metal, wood or KB board" After researching further, I believe you mean: Permatex Copper Spray-A-Gasket Hi-Temp Adhesive Sealant (10 oz)..... Fast-drying, metallic copper sealant helps dissipate heat, prevents gasket burnout and improves heat transfer. The sealant also fills minor surface irregularities, hot spots and surface imperfections and seals instantly. The sealant can handle temperatures ranging from -50�F to 500�F and resists all types of automotive fluids, especially gasoline. "HOME"

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561448 01/10/14 03:10 PM 01/10/14 03:10 PM
Joined: Apr 2007 Posts: 2,915 Calgary, Alberta Canada a12rag master
a12rag master Joined: Apr 2007 Posts: 2,915 Calgary, Alberta Canada	I have never had a thermostat housing that did not leak !! No matter what I tried ! Some would seap a tiny bit, but there was never a totaly dry unit. That is until I tried this unit from Terry's Auto Lab : http://www.terrysautolab.com/ Sure it is not cheap, but I DO NOT have a single leak on the car it is installed in !!! I really feel it is worth the $$ . . . Good luck with yours . . . Cheers Mark

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561449 01/10/14 03:15 PM 01/10/14 03:15 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: That is coming up as an ALL-PURPOSE SPRAY. "Product ID : 99MA - Category : Shop Supplies - Permatex. Permatex Copper Spray-A-Gasket Hi-Temp Adhesive Sealant (10 oz)..... Yes the 99MA. definitely not the copper spray a gasket live every 24 hour block of time like it's your last day on earth

Re: Installing an OEM Thermostat Housing. [Re: a12rag] #1561450 01/10/14 03:18 PM 01/10/14 03:18 PM
Joined: Feb 2007 Posts: 339 Irwin, PA 62BT409 OP enthusiast
62BT409 OP enthusiast Joined: Feb 2007 Posts: 339 Irwin, PA	Quote: I have never had a thermostat housing that did not leak !! No matter what I tried ! Some would seap a tiny bit, but there was never a totaly dry unit. That is until I tried this unit from Terry's Auto Lab : http://www.terrysautolab.com/ Sure it is not cheap, but I DO NOT have a single leak on the car it is installed in !!! I really feel it is worth the $$ . . . Good luck with yours . . . Cheers Mark Mark Thanks for the idea but that is what I am removing. Maybe not the "exact" part you mentioned. I want the OEM look for now.

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561451 01/10/14 03:30 PM 01/10/14 03:30 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	The factory put millions of thermostat housings on millions of water pumps/intake with nothing more than a paper gasket. Either your housing is junk or the mating surface on the water pump/intake is messed up. If you NEED anything other than a paper gasket to seal then fix the problem. If you feel you need anything else for "peace of mind" then fine, but it's not the problem. It's like taking aspirin because you have a nail in your head. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Installing an OEM Thermostat Housing. [Re: Supercuda] #1561452 01/10/14 03:40 PM 01/10/14 03:40 PM
Joined: Jan 2003 Posts: 21,065 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,065 Niles , Ohio	I used just paper for years.Then it seems the gaskets got cheaper.I installed thousands at work in 30 years.Water pumps also.I use the brown Permatex in the tube.Just a light coat.They seal.My 440 has the dreaded chrome housing.It never leaks and has been on for 12 years.Just use the non hardening stuff.When you do them for a living you dont want one coming back for a leak.Rocky Chrysler Firepower

Re: Installing an OEM Thermostat Housing. [Re: therocks] #1561453 01/10/14 04:28 PM 01/10/14 04:28 PM
Joined: Jun 2006 Posts: 5,161 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,161 CT	The housing probably isn't flat, either the thermostate housing or the water pump housing. Bring them to your machinist and ask them to correct it. Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: Installing an OEM Thermostat Housing. [Re: GTX MATT] #1561454 01/10/14 04:38 PM 01/10/14 04:38 PM
Joined: Sep 2005 Posts: 1,978 USA S Suregrip391 top fuel
Suregrip391 top fuel S Joined: Sep 2005 Posts: 1,978 USA	I've never had a leak using that stuff from Napa called "the right stuff", made by permatex. it comes in a cheese wizz can.....apply pressure to the nozzle and it flows out..... 7992595-image.jpg (54 downloads)

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561455 01/10/14 05:05 PM 01/10/14 05:05 PM
Joined: Apr 2007 Posts: 2,915 Calgary, Alberta Canada a12rag master
a12rag master Joined: Apr 2007 Posts: 2,915 Calgary, Alberta Canada	It is not the same as the one listed from Terry's . . . Terry has double o-ring seal, and utilizes the 1980's up smaller thermostat. That being said, funny how the 1980's up, used a metal housing that did not leak any where like the aluminum one. Over the years, I have just used sand paper to ensure the aluminum housing was flat, a paper gasket and silicone sealant. Would usually seal ok, but then have slight seapage over time . . . not enough to lose coolant, but enough to make things look yucky. With unit from Terry's you have a lower housing with o-ring seal, and then upper (where smaller tstat fits) with o-ring seal. Quote: Quote: I have never had a thermostat housing that did not leak !! No matter what I tried ! Some would seap a tiny bit, but there was never a totaly dry unit. That is until I tried this unit from Terry's Auto Lab : http://www.terrysautolab.com/ Sure it is not cheap, but I DO NOT have a single leak on the car it is installed in !!! I really feel it is worth the $$ . . . Good luck with yours . . . Cheers Mark Mark Thanks for the idea but that is what I am removing. Maybe not the "exact" part you mentioned. I want the OEM look for now.

Re: Installing an OEM Thermostat Housing. [Re: Supercuda] #1561456 01/10/14 05:48 PM 01/10/14 05:48 PM
Joined: Apr 2012 Posts: 18,880 - R RSNOMO Moparts Torchbearer
RSNOMO Moparts Torchbearer R Joined: Apr 2012 Posts: 18,880 -	Quote: The factory put millions of thermostat housings on millions of water pumps/intake with nothing more than a paper gasket. Either your housing is junk or the mating surface on the water pump/intake is messed up. Bullseye... Got 20+ years on an OEM thermostat housing, over an OEM pump housing, with a paper gasket... Dry as a bone...

Re: Installing an OEM Thermostat Housing. [Re: RSNOMO] #1561457 01/10/14 07:01 PM 01/10/14 07:01 PM
Joined: Jan 2003 Posts: 2,931 P Paul_Fancsali master
Paul_Fancsali master P Joined: Jan 2003 Posts: 2,931	One reason I found that thermostat gaskets leak is either unstalled while too cold lower then 50 degree's or too damp Best bet is install as described flat housing and clean and make sure you let the silicone set up or use a heat gun/ hairdryer on it for minute or two. I do not have any trouble at all with them any more after learning the hard way how not to install.

Re: Installing an OEM Thermostat Housing. [Re: 62BT409] #1561458 01/11/14 05:42 AM 01/11/14 05:42 AM
Joined: Aug 2003 Posts: 43,127 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,127 Bend,OR USA	if your using a aluminum OEM thermostat housing the ends may be bent down not allowing the center to compress the gaskets like they should I've had more than one that leaked before surfacing it on a big , 15 inch. wide, sanding wheel Same thing on some of the early cast irons ones also Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Installing an OEM Thermostat Housing. [Re: Cab_Burge] #1561459 01/11/14 03:51 PM 01/11/14 03:51 PM
Joined: Jan 2003 Posts: 5,893 Athens, Greece Pyper70 master
Pyper70 master Joined: Jan 2003 Posts: 5,893 Athens, Greece	Can we use the Permatex #2 on the Water Neck and gasket? I put on some Ultra Copper a week ago and it still hasn't dried...Must have been a bad tube...I need to take it off and clean it up...Wondering what i should put on this time around Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Installing an OEM Thermostat Housing. [Re: Pyper70] #1561460 01/11/14 04:08 PM 01/11/14 04:08 PM
Joined: Aug 2003 Posts: 43,127 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,127 Bend,OR USA	I have bought and used both "Water pump and Thermostat housing" sealer, silicone and "adhesive silicone" for that, if the tube doesn't say Adhesive" on it I don't buy or use it Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Installing an OEM Thermostat Housing. [Re: Cab_Burge] #1561461 01/11/14 08:19 PM 01/11/14 08:19 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	What has worked for me... 1) never use a chrome water neck. The iron repops from the parts store are fine 2) make sure the housing and water neck are flat. I usually wind up putting the water neck on the belt sander. 3) Wash everything with clear water. Clean thoroughly with Scotchbrite. Clean with solvent. 3) Dry well. An old hair dryer is handy. 4) Install with a light coat of Permatex #1 5) Torque gently. Too much warps the housing and causes leaks. The above has always worked. I have not always had good luck with silicone on this joint.

Re: Installing an OEM Thermostat Housing. [Re: Pyper70] #1561462 01/12/14 10:30 AM 01/12/14 10:30 AM
Joined: Jan 2003 Posts: 21,065 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,065 Niles , Ohio	Pyper if the permatex is the non hardening type thats what I use.I never remember the number.I just walk in and get a tube thats white and says non hardening.Just a light cost on both sides of the gasket.Ive seen too many siliconed ones that leak.Most are because people think you need a 1/2 inch to seal.Rocky Chrysler Firepower

Re: Installing an OEM Thermostat Housing. [Re: RSNOMO] #1561463 01/12/14 11:59 AM 01/12/14 11:59 AM
Joined: Jan 2003 Posts: 9,436 Blair County,PA 62maxwgn master
62maxwgn master Joined: Jan 2003 Posts: 9,436 Blair County,PA	Quote: Quote: The factory put millions of thermostat housings on millions of water pumps/intake with nothing more than a paper gasket. Either your housing is junk or the mating surface on the water pump/intake is messed up. Bullseye... Got 20+ years on an OEM thermostat housing, over an OEM pump housing, with a paper gasket... Dry as a bone... And if you find one that does leak,clean the top of the water pump housing,run the thermostat housing on a belt sander,use a good paper gasket and don't over tighten and it won't leak.I've been doing it that way since I've owned my first car and never used a drop of sealer of any kind.

Re: Installing an OEM Thermostat Housing. [Re: therocks] #1561464 01/12/14 12:00 PM 01/12/14 12:00 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	#2 is non hardening live every 24 hour block of time like it's your last day on earth

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