Author Topic: Engine Bearings: Failure Analysis and Correction  (Read 1388 times)

February 26, 2016, 01:25 PM #0

Igor Offline

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Found this article on one of the Subaru forums (where else) and it was a pretty good read so I thought I'd share it on here.

Enjoy

http://www.mahle-aftermarket.com/media/local-media-north-america/product-files/ceb-2-1114-engine-bearing-failures-brochure.pdf
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    Engine Bearings: Failure Analysis and Correction
    « on: February 26, 2016, 01:25 PM »

    February 29, 2016, 09:52 AM #1

    adc604 Offline

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    Interesting.

      February 29, 2016, 10:39 AM #2

      themikewoo Offline

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      February 29, 2016, 11:56 AM #3

      Igor Offline

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      Originally posted by themikewoo
      I was surprised the word "Subaru" and "Boxer" were not in that document.

      Me too. Maybe it's implied?
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        February 29, 2016, 12:00 PM #4

        themikewoo Offline

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        Originally posted by Igor
        Me too. Maybe it's implied?
        Obviously there is a difference between boxer, inline, and V style engines. I wish it would of touched on that aspect.

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          February 29, 2016, 12:13 PM #5

          Igor Offline

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          Originally posted by themikewoo
          Obviously there is a difference between boxer, inline, and V style engines. I wish it would of touched on that aspect.

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          Correct but bearing wear is bearing wear regardless of the type of engine it's coming from. I guess certain layouts could have one type of wear that is more common, such as wear due to oil starvation in the H4s
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            February 29, 2016, 12:19 PM #6

            themikewoo Offline

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            Originally posted by Igor
            Correct but bearing wear is bearing wear regardless of the type of engine it's coming from. I guess certain layouts could have one type of wear that is more common, such as wear due to oil starvation in the H4s
            That is the exact comments I was looking for in the link. What is the "H4"?

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              February 29, 2016, 12:21 PM #7

              Igor Offline

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              Originally posted by themikewoo
              That is the exact comments I was looking for in the link. What is the "H4"?

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              Horizontal 4 Cylinder
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                February 29, 2016, 12:38 PM #8

                themikewoo Offline

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                Originally posted by Igor
                Horizontal 4 Cylinder
                Oh. That's not a code to determine a specific engine block like how Honda's do it?

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                  February 29, 2016, 12:50 PM #9

                  Igor Offline

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                  Originally posted by themikewoo
                  Oh. That's not a code to determine a specific engine block like how Honda's do it?

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                  Correct.

                  Hx - Horizontal X
                  Ix - Inline X
                  Vx - V x

                  Subaru uses EJ, FA, FB for their engines, with the EJ coming in 2L and 2.5L   
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                    February 29, 2016, 01:11 PM #10

                    themikewoo Offline

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                    Originally posted by Igor
                    Correct.

                    Hx - Horizontal X
                    Ix - Inline X
                    Vx - V x

                    Subaru uses EJ, FA, FB for their engines, with the EJ coming in 2L and 2.5L
                    Information like that should be in a thread welcoming potential Subaru owners. On s2ki there is a huge thread detailing differences between the two generations.

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                      February 29, 2016, 01:27 PM #11

                      Igor Offline

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                      Originally posted by themikewoo
                      Information like that should be in a thread welcoming potential Subaru owners. On s2ki there is a huge thread detailing differences between the two generations.

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                      There are stickies on IWSTI and NASIOC for that kind of information. Anyone willing to do the research will know to go to a manufacturer/model specific forum.

                      The article above is not subaru specific, nor any other manufacturer. It is a document put together by a company sharing their observations/findings regarding bearing wear.
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                        March 02, 2016, 05:03 PM #12

                        Stoyka Offline

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                        I found the bit about grinding and polishing cranks interesting! Microscopic fuzz lol who'd of thought!
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                          Engine Bearings: Failure Analysis and Correction
                          « Reply #12 on: March 02, 2016, 05:03 PM »