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Blown headgasket? maybe?

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    #1

    Blown headgasket? maybe?

    So I bought this 86 325ES off a guy last week, and he had stated that the headgasket was blown.

    So I got it home, and started taking the engine apart to get to the head. I popped off the valve cover and it looked relatively clean, for having coolant all mixed up in there. Well, except for this.

    Just thought I would share my bountiful findings.
    Attached Files
    Originally posted by Bene
    my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.
    Tags: None
    #2
    Lol is that rust?
    - Josh
    1990 325is

    Need a shift boot?
    Looking to buy shift boot frames, PM if you have one to sell

    Here's what happens when you let the internet pick your license plate

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      #3
      id say that head bold was left out in the rain for a while and not from exposure to coolant-oil mix.

      The Build:       http://www.r3vlimited.com/board/showthread.php?t=191125

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        #4
        yea that doesnt look like normal blown head deposits. id do a comp test if its possible

        Turbo M42 Build Thread :Here
        Ig:ryno_pzk
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        Originally posted by lambo
        Buttchug. The official poster child of r3v.

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          #5
          not sure how the water passages look under the head , but if there is one close to that bolt then the water found its way up the hole where the bolt went through and slowly wetted the bolt head , as you can see there are some rust deposits on the rocker arm next to it, water must have been sprayed from under the bolt , if you take the bolt out it should be rusted aswell.
          this is my opinion
          Henry

          Comment

            #6
            That head is way too clean except for the corrosion on that head bolt. I'd wager that the head has been off recently and that end of the head exposed to rain for a while.
            The car makes it possible, but the driver makes it happen.
            Jim Levie, Huntsville, AL

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              #7
              I'm gonna try to get it off tomorrow, I'll take more pictures and post them up.

              it'll be exciting, since I've never tore an engine down this far before.

              there's actually some more small spots of rust on the rocker clips that you can't see in the picture.
              Originally posted by Bene
              my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.

              Comment

                #8
                Is there actual coolant in the motor or just water? Coolant will clean a motor nicely but I can see pure water causing your rust problem. Agreed, head is too clean.

                Comment

                  #9
                  So I got the head off today to have a look underneath and this is what I found.

                  I'm not sure if there are any signs of it blowing the headgasket for sure, but it sure looked crusty/gunky to me. Didn't seem normal. Also, that one headbolt was only rusted on the top of the bolt. All of the bolts were coated in oil with what seemed like water beaded on top.

                  I'm not really sure what caused it, as I didn't notice any catastrophic failure in the headgasket. Also, it appears the previous owner may have run some sort of stop leak through the engine? I found some light colored crusty/crystal formations in the center water channel on the intake side.

                  But I stripped the head down to the valves and sent it off to a machine shop for testing and to get cleaned up. the rockers and camshaft looked like they were in pretty good shape though.
                  Attached Files
                  Originally posted by Bene
                  my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.

                  Comment

                    #10
                    Are you sure the head gasket went?

                    Usually oil mixes with the coolant and you get this brown mud shake sludge everywhere when the head gasket goes. That coolant looks clean.

                    Look at the block for evidence of blow by. Perhaps the previous owner tried to fix it and didn't torque the head down properly - looks better then my block. I just recently took the head off to fix a snapped timing belt and there was a ton of carbon built up everywhere, but I think it was due to a bad distributor and poor spark.

                    Comment

                      #11
                      I don't have any firsthand knowledge of what happened to it, since I bought it that way.

                      The PO said that as soon as he saw the milky oil he drained the oil and coolant. I think it sat there for a few months as he was either unable to fix it, or didn't know how.

                      the edge of the gasket in the picture is bowed out on the bottom in the picture. I don't know if that could have done it or not.

                      Either way, the head and parts are supposed to be in next week, so I'll have an update then.
                      Originally posted by Bene
                      my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.

                      Comment

                        #12
                        Flush the radiator for left over evidence. My head gasket also showed no definite signs of being blown

                        lol

                        Bronzit 4-door Swap Drifting somewhere
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                        Updated 10/1

                        Originally posted by StereoInstaller1
                        Maybe 300 CANADIAN HP, thats like 225 US HP.

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                          #13
                          damn. now thats a milky radiator. I drained it when I started, but the coolant didn't look like that. I was almost like a black color.
                          Originally posted by Bene
                          my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.

                          Comment

                            #14
                            Originally posted by Yage30 View Post
                            I don't have any firsthand knowledge of what happened to it, since I bought it that way.

                            The PO said that as soon as he saw the milky oil he drained the oil and coolant. I think it sat there for a few months as he was either unable to fix it, or didn't know how.

                            the edge of the gasket in the picture is bowed out on the bottom in the picture. I don't know if that could have done it or not.

                            Either way, the head and parts are supposed to be in next week, so I'll have an update then.
                            I can't really tell from the picture, ( I was in the same situation, bought the car like that for cheap) but I know when I changed mine I didn't notice a defect at first, but later when I was starting to put it back together, I noticed a slight defect on one of the rings. All it takes is one tiny gap.

                            Comment

                              #15
                              ok, so quick question. there is still coolant in some of the bolt holes in the block. is that normal or should there not be any in there at all?
                              Originally posted by Bene
                              my eta is making a kind of high pitched bird-like sound, like a bunch of retarded cockatiels nesting in the intake manifold.

                              Comment

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