I own a 1965 Volvo 122S Amazon with a manual trans. Engine was completely overhauled. At around 40,000 miles,
the timing gear failed. It was a fiber gear. Prior to failure, oil pressure was up to 96 with the newer Heavy Duty oil pump. After the failure, drained the oil, replaced the filter, I removed what was left of the fiber timing gear, cleaned what I could, installed a new set of metal gears and chain. Cranked it up and read 16 pounds of oil pressure.
Decided to try engine cleaner. Replaced oil and filter and cranked it over again to run. Oil pressure increased to 28.
Ran another cycle of engine cleaner, drained oil, removed and cleaned pan, removed oil pump, dismantled, inspected, cleaned and tested pump. Pump tested just like new. Blew compressed air through oil galley from below and at port at top. Oil pressure now increased to 47. Oil pressure for this engine should range from 56-85. Checked compression, compression great.
Aside from completely dismantling engine and having it pressure washed, is there anything you can suggest to recover the lost oil pressure?
Thanks!!!
There's no saying how accurate pressure gauge is are realize of course if the fiber timing gear disintegrated those fibers could have damaged the oil pump or clogged up some holes in the oil galley somewhere
Not quite the reply I was hoping for. I am aware of the fibers lodged within the galley ports. Oil pump is fine. I was hoping for some tips to removing the remaining fibers from the engine.
Thanks!
Maybe try blowing out the oil passages with compressed air again, apparently you've been seeing improvement each time you've gone in to clean up. This assumes of course there was no damage to bearings which could cause a low oil pressure condition.