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Low Oil Pressure after rebuild 120-130

posted by  weezaanna on  Mon Jul 20 14:18 CST 2020
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Newly rebuilt 68 122s B18. Installed and runs beautifully, very strong sounding motor. Starts right up. BUT, low oil pressure, not enough to top of engine. Has heavy duty oil pump. Everything balanced, rebuilt, replaced with top quality parts. Any ideas about low oil pressure? Thank you.








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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    One or both of the pick-up tube "O" rings is ripped, not set right or folded over. - Dave



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      I can attest to the fact that the "edit" works now--my fat fingers made a typo--now corrected. The previous answers also made an appearance now--they did not show up before. - Dave



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    Oil pick-up pipe O ring damaged, distorted, out of position or maybe even missing? B18 sump plate has to be modified to use the current B20 pump. B18 pump NLA. If the sump isn't modified it can skew the pick-up and cause it to suck air, hence low oil pressure.



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    Did you remember to install the oil squirter for the timing gears?
    --
    Eric
    Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
    Torrance, CA 90502
    hiperformanceautoservice.com or oldvolvosonly.com



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      Husband did ask machinist and he said the "oil squirter" was left off. We have ordered what I believe is the correct part. Husband will also check through all of your suggested possible errors... THANK YOU. Great help here!


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