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  • #16
    Good eye Ken, the tabs are either flat or broken off.
    72 Pimento w/overdrive

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    • #17
      I hate to say it, but if the journal is scored in any way, you will need to pull the engine and have the crank turned. If you can "catch" your finger nail on the surface of any journal, you're beat.

      If tried swapping in new bearings a couple of times over the years (albeit in chevy V6 motors) and it's never worked for me. The problem came back very quickly.

      You can give it a shot as you're already in there and committed and what the hell, you never know, you might just get away with it. If you don't though, you're into a rebuild. (Not the end of the world though....)

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      • #18
        You say the engine had never been apart, but I'd like to see a picture of the back side of that bearing or one of a bearings that had not spun...just to see if the trademark indicates the original factory installed Vandervell bearings.
        There are a couple of things that will cause a bearing to spin...one is inadequate lubrication, another is the wrongs size bearing....but the one that I tend to suspect would be improper installation, something that isn't too likely to have happened at the factory, 50,000 miles ago.
        Let's see a picture of the trademark and part # on the back.
        Last edited by poolboy; 06-30-2018, 02:08 PM.
        Driving a 1973 TR6
        Doing ZS carb repairs
        email kencorsaw"at"aol.com

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        • #19
          Poolboy, I pulled a good bearing and it has the Vandervell marking with the #5105 and on the other end the #149081. Having trouble uploading pix

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          • #20
            That sounds like a factory installed (as long as no one messed with it) original, Cole.
            Driving a 1973 TR6
            Doing ZS carb repairs
            email kencorsaw"at"aol.com

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            • #21
              Poolboy, what is your recommendations ? I spoke to a recommended experienced mechainic who said to pull the motor, remove the crank, send it out to Storm Crankshaft in Mt. Vernon, NY, they will weld the scored journal, cut it down to original spec, balance, then reinstall with standard bearings and I should be good. He noted in his 40+ years, TR6 were prone to a spun bearing ! I plan on stopping at a couple of other shops for their opinions and prices to do the work. I’m a little nervous about removal of motor, but I am mechanically inclined !! Wish there was a Tr6 club around here to get advice !

              Thanks,
              Coleman

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              • #22
                I really can't comment on that Storm Crankshaft shop....but I did have a shop in Jackson Mississippi weld up and cut down a journal on a Jaguar engine that was worn beyond bearing sizes...lost all the oil...my fault.
                During the first week with the reconditioned crankshaft I babied the engine; then I decided to take a chance and drive it normally, NOT 'like I stole it', just what I considered normal.
                It didn't take long before I heard that rod knocking again.... That put me in search of another crankshaft.
                XK Jaguars weren't as valuable back then as they are today, so I was able to find one in a rusted out XK140 for virtually nothing..all I was asked to do is completely disassemble the engine and return all the parts except the crank to the owner...I was back in business within a few days.
                So I'm skeptical about that weld up and turn down process.

                Enough about me...you need to get that crank out and have it "mic'd"....bearings you can get up to .040 oversize to fit the turned journals.
                You'll also need to get the connecting rods resized by the machine shop.
                There's more, but that's enough from me tonight....you can do it !
                I should mention there are crankshafts taken out of TR6 engines all around...just put out the word that you're in need and right here on this Forum, you'll probably find one.
                Driving a 1973 TR6
                Doing ZS carb repairs
                email kencorsaw"at"aol.com

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                • #23
                  I agree with the others....I'd pull the engine, mic the crank, you may be able to just have the crank turned and go back with over-sized bearings. But, I would absolutely find the root cause of why this happened to your engine of 50K miles.. was it oil pressure or something else?...Good luck!
                  1973 TR6 CF 1387U
                  Pimento Red, HVDA, Toyota W58 5 speed
                  R200 Diff, GP2/ Hubs/Axles/ Mr Mikes
                  Supplier of Toyota W58 5 speed Transmissions

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                  • #24
                    Be careful now, don't do a lot of searching on this site about engine rebuilds. The next thing you know we will have you spending thousands of dollars under the premise "while your in there".

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