1. Welcome to 4Runners.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Billet Aluminum Thermostat Housing for 4.0L 1GR-FE Engines

Discussion in '4th Gen 4Runners (2003-2009)' started by 1GR-FE<3R, Oct 20, 2022.

  1. Oct 20, 2022 at 10:59 AM
    #1
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody

    Our Billet Aluminum Housing!

    We are ditching the factory Toyota spring loaded thermostat for a readily available thermostat at any auto parts store with different temperatures available (Toyota stock is 180°, We will also offer a 160° for those who request it that are tuned/performance) Standard we will be including a high flow 180° thermostat. The thermostat we include is superior to a factory Toyota thermostat which relies on a rubber flap style seal. The thermostat included in our kit utilizes a brass seal design. The thermostat application is for GM 8.1L engines. They are readily available at any auto parts store in stock.

    We also ditched the leak prone factory flat style Toyota o-ring. Our billet aluminum housing uses a generic thick gauge heavy duty o-ring that provides a stronger seal then the factory Toyota o-ring. The o-ring for our billet housing is readily available at any auto parts or hardware store as well. We will be listing the replacement part numbers for o-ring and thermostat and make the info readily available to everyone should it be needed.

    I have changed a couple dozen factory Toyota housings due to failing plastic/leaking, allowing coolant to leak past the factory o-ring! In a couple cases I actually found the fingers broken that have the job of holding the thermostat in place! One instance lead to a blown head gasket due to the thermostat being sideways!

    Other benefits. Our housing does not use the factory Toyota alignment pin which requires a “tang”to be molded inside the thermostat housing. Our billet housing does not have this “tang” resulting in a more free flowing housing. Less pressure and strain on the water pump and cooling system. A small increase in flow through the cooling system has multiple advantages. Internal combustion engines have colder and hotter spots naturally inside the motor, an increase in coolant flow reduces the hot spots throughout the motor. Leading to an increase in engine durability; common head gasket failure is due to these hotter spots inside the engine. With a more balanced/cooler engine temperatures come increased performance. Detonation, knocking, and/or pinging are less likely to occur. When this occurs the computer makes an attempt to protect to engine, it will retard timing and increase fueling, leading to a drop in performance/power/mpg. In tuned applications, timing may be able to be advanced more due to this increased cooling system performance.

    And lastly we have a spot located for drilling and tapping our billet aluminum housing at request for an additional coolant temperature sender or switch!

    You guys need to see it in person to appreciate the quality. All made in the USA, all US materials by a family owned machine shop located in San Fernando, California.

    Normal pricing we will be selling these for $150 free shipping plus tax on the store with thermostat of your choice assembled and ready to install.

    I have been given permission from the business partners to initiate a Toyota group & forum $10 off presale. We have our first batch of 100 one week away from being ready.

    Please send me a message, text or give me a call! 100% a normal car enthusiast stoked to have his part available to the world!

    Cody Anderson
    (805)432-1454

    $140 free shipping & no tax on the presale!

    Factory plastic housing


    This is the plastic “tang” inside of the factory plastic housing.

    For those interested! The housing will not be listed on the website for some time…
    https://stores.unleashedcustommachining.com/
    It will also be listed on the eBay store here!
    https://www.ebay.com/str/reapercustoms805

    Duhhhh I forgot the install pics!
    AEAD4A0C-E441-4645-84F6-C27908E518D1.jpg
    C4916D94-7C05-47CA-94F2-DE5F90E3E245.jpg
     
    Last edited: Oct 20, 2022
  2. Oct 20, 2022 at 9:04 PM
    #2
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
    We are ahead of schedule! We will be shipping orders this weekend!
    BAD960B9-F839-4728-8162-3DF0F746EFCD.jpg
    4773DED4-91E2-4FDB-8E28-F1A2A138E210.jpg
     
  3. Oct 20, 2022 at 9:19 PM
    #3
    negusm

    negusm New Member

    Joined:
    Oct 22, 2019
    Member:
    #11745
    Messages:
    1,289
    Gender:
    Male
    Vehicle:
    2002 4Runner SR5 4WD
    Dang. That's a hella nice part there.

    Somebody was on a mission from God to eliminate that chinsy plastic part.
     
    1GR-FE<3R [OP] likes this.
  4. Oct 21, 2022 at 10:24 AM
    #4
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
    It was over a 2 year mission!
     
  5. Oct 22, 2022 at 11:23 AM
    #5
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
    Bumppppp! Presale units are going fast! Shipments are starting to go out today!
     
  6. Nov 3, 2022 at 11:44 AM
    #6
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
  7. Nov 5, 2022 at 2:24 PM
    #7
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
  8. Nov 11, 2022 at 5:22 AM
    #8
    raimieb

    raimieb New Member

    Joined:
    May 16, 2022
    Member:
    #27095
    Messages:
    16
    Gender:
    Male
    First Name:
    raimie
    Are these available on the UCM site or just ebay? Anyone purchase yet. A review....
     
  9. Nov 11, 2022 at 12:08 PM
    #9
    1GR-FE<3R

    1GR-FE<3R [OP] New Member

    Joined:
    Oct 19, 2022
    Member:
    #29163
    Messages:
    19
    Gender:
    Male
    First Name:
    Cody
    Currently they are only listed for sale on the ReaperCustoms805 eBay store here
    https://www.ebay.com/str/reapercustoms805?ssspo=9CipNkhvSZa&sssrc=3418065&ssuid=GDApMb0KRH2&widget_ver=artemis&media=COPY

    We did a presale on them to the forums and groups, and they went quick! But they are in stock ready to ship!

    We have sold a ton to the 2nd gen taco & fj owners!
    https://www.tacomaworld.com/threads/billet-aluminum-thermostat-housing-for-4-0l-1gr-fe.781648/
     

Products Discussed in

To Top