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3RZ cyl head prone to cracking?

Discussion in 'Technical Chat' started by sgtlethargic, Jun 29, 2008.

  1. Jun 29, 2008 at 6:40 PM
    #1
    sgtlethargic

    sgtlethargic [OP] Active Member

    Joined:
    Jun 3, 2008
    Member:
    #7088
    Messages:
    27
    California
    Vehicle:
    '97 Forerunner, 3RZ, 5-speed
    Is the 3RZ cyl head prone to cracking? Mine's cracked, and the engine was never overheated.

    And, is there an aftermarket 3RZ cyl head? The shop I'm working with says $650 for a bare aftermarket head that's supposed to be better.

    Thanks,
    Kurt
     
  2. Jun 29, 2008 at 7:22 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    I havent heard of them craking. Maybe once in a while. But I dont think its an epidemic. Check out LCE for parts, or a complete head. :)
     
  3. Jun 30, 2008 at 1:13 AM
    #3
    Spyder327

    Spyder327 Well-Known Member

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    Phoenix, AZ
    Vehicle:
    2005 X-Runner
    Aquamist 2D meth/water injection kit, URD Exhaust, DT Long Tube Headers, Hood Struts, and lots of other miscellaneous stuff...
    Paradise Racing can probably also get you some good parts.

    the 3RZ's are not typically prone to problems like this.
     
  4. Jul 2, 2008 at 11:09 PM
    #4
    sgtlethargic

    sgtlethargic [OP] Active Member

    Joined:
    Jun 3, 2008
    Member:
    #7088
    Messages:
    27
    California
    Vehicle:
    '97 Forerunner, 3RZ, 5-speed
    Japan Engines (japanengine.com) sells a new, complete, aftermarket 3RZ cyl head for $450.

    Thanks,
    Kurt
     
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