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Best way to ensure engine is debris free before rebuild??........ Advice please

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    Best way to ensure engine is debris free before rebuild??........ Advice please

    Hi all,
    Just to recap, recently had engine block re-bored/skimmed but the jack shaft housing needed boring out and bushing.
    As per Neil's recommendation, block went to Coventry Classics and the job was done - a good job it was to - so once again thanks Neil. I was advised however the block WILL need further cleaning to ensure it'e dirt/debris free before re-assembly. Any advice as to the best way a "thorough clean" can be achieved would, as ever, be appreciated.
    Many Thanks
    Gord
    Last edited by BartonStag; 22 July 2021, 19:35.

    #2
    High Pressure spraying with de-greaser or white spirit is what I did. Used an old gravity spray gun with 1.8mm nozzle & 80psi air.

    Messy job, but did the trick.

    Comment


      #3
      Originally posted by NeilR View Post
      High Pressure spraying with de-greaser or white spirit is what I did. Used an old gravity spray gun with 1.8mm nozzle & 80psi air.

      Messy job, but did the trick.
      That sounds about right! There isn’t a clean way to clean engine parts, although I’ve used commercial steam cleaning after the solvent clean to get blocks spotless……
      Richard
      Mabel is a white ‘72 Mk2, TV8, ZF 4HP-22 auto.

      Comment


        #4
        Blimey Neil that sounds like a barrel of laughs !! Assuming over spray will go everywhere, did you knock up some type of containment canopy or similar?
        BTW my thanks to YOU for the Coventry Classic Engine tip, I put the incorrect members user name in my original post.
        Cheers
        Gord

        Comment


          #5
          Engine machine shops should have a washer that can accommodate a block for this job.
          Usually a hot wash.
          Advanced machines twist the parts through 3 axis.
          if you can’t find a place to do this , it’s essential to take as many hours as it takes to clean , spray etc etc yourself. Dearly bought experience taught me that.
          There are 2 secrets to staying on top :- 1. Don't give everything away.
          2.

          Comment


            #6
            I have a approx 4ft X 2ft steel home made drip tray. Never used as a drip tray but great for cleaning large items, used outside on gravel.

            Must be 30 years old by now, lives behind the shed when not being used.

            Comment


              #7
              I believe that machine shops state that the parts need cleaning is to put the onus on the assembler, they must have had claims in the past where swarf caused damage and do not want to take responsibility when it could have been introduced later.

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                #8
                When ive been doing mine, i use petrol and pipe cleaners,the pipe cleaners get in to all the small holes
                73 mk 1/2 now gone to the dark side BLUE

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                  #9
                  Why bother? Triumph didn't.
                  Your wife is right, size matters. 3.9RV8

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                    #10
                    Originally posted by jakesmig View Post
                    Why bother? Triumph didn't.
                    73 mk 1/2 now gone to the dark side BLUE

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                      #11
                      When my stags cylinder block was rebored , the machine shop dipped it in a vat of fierce (acidic?) cleaner.
                      then washed it.
                      It looked like a new casting, freshly machined. It was ready to paint & build. (No paint, no rust no debris)
                      took the heads to a so called professional reconditioning outfit for cleaning after they’d been welded & refaced at some expense ( whole fire face & bucket bores )
                      they blasted them & said they had washed them. They did appear to be as new but they left media behind which wrecked the rebuild.
                      both heads were ripped off in a fit of peak (2 hours) & thrown into the garden …. They landed about 12 feet away. 1500 in parts down the drain… in the mid nineties.
                      clean clean & clean again.
                      Last edited by jbuckl; 23 July 2021, 23:11.
                      There are 2 secrets to staying on top :- 1. Don't give everything away.
                      2.

                      Comment


                        #12
                        Thanks as ever for all responses folks much appreciated
                        Cheers
                        Gord

                        Comment

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