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Thermostat Housing: Why they leak and permanent fix

Thread in 'Engine' started by Paul Fithian, Dec 21, 2018.

  1. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    The reason for Simmons being ridiculously expensive is the sand mold process, requires new molds constantly, which leads to inconsistencies, plus he thought he had market cornered...He has no choice now but to lower his price and spread lies about his competitors quality.
     
  2. Mark K 2

    Mark K 2 Well-Known Member 1st Gen Owner V6 Engine

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    I have an Austekk. Mine doesn't leak after being installed for a year.
     
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  3. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    Wow so you are a back yard grease monkey, good for you, I am/was master certified automotive technician with a degree in automotive sciences, my father being a ford engineer, with tons of friends that are engineers....So yea, mind you own, I have seen way more failure due to sand cast than injection molded....Needless to say I know more than you do. So don't try and act like you are smarter than anyone....Very childish of you to attack someone in cyber world, makes you look like you have issues.
     
  4. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    I pulled the leaking Austekk housing and installed the one piece Simmons housing. I believe this will cure the leaking thermostat housing once and for all.
    Austekk Leak Evidence 2.jpg
    Simmons SA-4 Installed.jpg
     
  5. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    Well obviously someone was in there based on the ultra grey silicone used on the top housing..... My question is ( trying to be impartial) is I don't see the Austekk name cast on it as I was told they all have.......I see Gaul marks around the nipple, Wrong tools used? Undue pressure on the fitting from the hose? Or was it simply a defect in over 1,000 pieces made? Is this the ONLY one leaking?

    So I have open ended questions too before I make my decision based on FACTS....
     
  6. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    I disassembled the unit upon receipt and added a ribbon of Permatex 22071 to improve sealing capability around the perimeter.

    You can read the ATK markings just to the left of the nipple in the picture from the previous post.

    Nothing but rubber hose contacted the nipple, not sure how you see galling on it.
    Austekk Leak Evidence.jpg
     
    Last edited: Dec 31, 2018
  7. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    The Knicks to the left of the nipple..... ALSO any chance the hose was leaking, Old hose on anew smooth nipple with no sealant and just the crappy FORD spring clamp ???
    I would have siliconed the top to the bottom too....

    I see the ATK lettering but I posted a pic showing the complete name I was told was on every housing.

    ALSO the Simmons ones I get still had sand in them and had to be washed, and the hose fittings from the sand casting were not smooth, those needed a thin layer of silicone on the hose nipples, the rad and the heater.

    I hope you send that back and Austekk can find the culprit.... I would like to pressure test that fitting and see if it was the hose or fitting..
     
  8. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    New hose was installed on that nipple, it did not leak. The leak is at the nipple base.

    The video I posted earlier in the thread explains why it leaked. Steel nipple into a straight threaded connection with a silicone bead.

    I have ~ 100 miles on truck after installing the Simmons housing, no leak or coolant smell.
     
  9. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    I am running Simmons too. Just the sand and silicone was needed.

    Again , is the nipple steel or aluminum??
    Austekk says aluminum. Your saying steel.
    Is this the genuine Austekk housing or the knock off or am I still not being told the facts????



    Sent from my iPhone using Tapatalk
     
  10. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    Not sure what facts are missing. The video from Simmons states the Austekk housing uses a steel nipple. From my eBay purchase history, what I received is an Austekk thermostat housing:

    Item specifics
    Condition: New Temperature: 190F
    Brand:
    Austekk
    Interchange Part Number: RH144, RH165, 2L5Z-8592-BB, 4L5Z-8592-AA
    Fitment Type: Performance/Custom Material: Aluminum
    Warranty: Lifetime Manufacturer Part Number:
    ATK-8592-ACCS
    Mounting Hardware Included: Yes UPC:
     
  11. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    well, If you have an Austekk housing, what's the Nipple made out of?? Use a magnet, does it stick??

    And to my point, YOU nor K Thomas have directly answered the questions. I don't care what Simmons says, he is not on here posting unless he is you ???? that's HIS video...

    Thus this thread is useless, claims ( Positive AND Negative) right now are crap.
     
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  12. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    It is obvious why the nipple leaked, Paul damaged it by disassembling it, likely hit it while undoing the bolts holding the parts together....Shame on him for blaming a part due to negligence.
     
  13. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    The nipple was never disassembled. Again, only the hose contacted the nipple.

    If the nipple seal could not take normal handling of installation, it would never survive the pressurized, hot, and vibrating zone of where it is mounted.
     
  14. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    You damaged it, your comment is completely idiotic. I see the marks where you hit the pipe in your own picture.
     
  15. Noviastar

    Noviastar Member 1st Gen Owner 4 Wheel Drive V6 Engine

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    If a concerned newbie can chime in. Is the Simmons a good choice for a long term solution to the Main problem of the plastic ones failing so often? And or is these other ones also a viable option as long as caution is maintained in installing and handling? I assume from some of this there are really cheep knockoffs of a non cast one, but that there are good quality multi piece units?

    I'm just asking as I'm going to drop some cash here on one and Id like to not revisit this issue for many years.

    Thanks!
     
  16. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    Welcome,

    Don’t be concerned but glad you asked the question.

    Ok I have installed both the Simmons and Austekk, both have held up.

    The other ones on eBay are knock offs of the Austekk.

    After researching both, Zabteck performance is going to be selling the Austekk ones. This way the ST community has a place they can go easily to get.

    Hope this helps you.
     
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  17. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    B3B78C8C-0713-4EA6-B0EE-F2395B35D3F7.jpeg
    Obvious you are a liar, you took it apart and slammed the pipe with you tool and broke the seal...You are a fraud and crying and blaming a part you destroyed. You should be banned from this forum.
     
  18. K Thomas

    K Thomas Member 2nd Gen Owner 2 Wheel Drive V6 Engine

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    Basically, Simmons over priced low quality, I have seen on other forums how you have to modify to get it to fit, and complaints about having to clean sand out of it, not to mention you have to spend more to get what you get included with Austekk. Austekk even includes the throttle body gasket for those that need to remove it for install...So take it as you may, Paul up in here is a liar and has no clue what he is talking about, a big fat fraud. He damaged his Austekk and then tries to blame the part.
     
  19. Paul Fithian

    Paul Fithian Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    Here are some additional facts:
    1) Since installing the Simmons thermostat housing, I have no coolant leak.
    2) K Thomas only recently joined this forum and has only posted on this thread to defend the Austekk housing and accuse me of lying.
    3) Simmons housings are US made, Austekk are made in China.
    4) I have no connection to Simmons other than purchasing one of their thermostat housings.
     

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