Do some WWW research on "AirBound Hydraulic Lifters" ~ Interesting stuff ~ Here is 1 find ~ go to "My conclusions" near the bottom for the Brief http://www.syncro.org/boston_bob-hydrauli-lifter-lore.html
On 24 May , 2014, at 12:25 PM, Don Hanson wrote: > Thanks, Mark....I learned something there. It never occurred to me that > the adjusters themselves could be worn...but now that you've pointed that > out, I can certainly see the possibility...no, even likelyhood...of those > adjusters getting worn or bashed flatter than before in just one > spot...especially on a motor that had a big angle at that junction of > moving parts. > > I've never heard of a WBX motor having 60psi oil pressure at warm idle... > > > On Sat, May 24, 2014 at 10:34 AM, mark drillock <mdrillock@cox.net> wrote: > >> If it was in my driveway the test would now be to loosen the valve >> adjusters a full turn on that low reading cylinder. Then compression >> test that cyl again. >> >> At this point I would pull the 1 plug, test the compression again to get >> a new base reading and since the other plugs are still in, then remove >> valve cover, loosen 1 adjuster for that cyl exactly 360 degrees. Test >> compression, loosen the other adjuster 360 degrees, test again. The >> reason for 360 degrees is that the adjusters get flat spots worn into >> them over time and a fraction of a turn loosening can actually bring a >> high spot into position and then the clearance is actually tighter >> rather than looser. Having 2 new adjustors on hand might be good too so >> you can replace the adjusters if mushroomed or pitted. >> >> Mark >> >> >> >> Loren Busch wrote: >> >>> In a '90 Westy, stock 2.1L WBX with 185k miles, auto tranny >>> >>> Recent compression test is 150, 145, 135, 70. Number one is 70. >>> So, two questions. >>> How long can I drive with this condition before I have major problems? >>> And second, what is my best solution to this. >>> BTW, oil pressure is good, 60 psi at idle warm. >>> >>> |
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