Re: Compression Test
Posted by
Hoosier Daddy on
Oct 31, 2012; 2:31pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Compression-Test-tp4031442p4031484.html
Pardon my ignorance but being the "New Guy" to the party...
Is this a bike that you've been riding, one you rebuilt, or one you are bringing back from a long lay-over?
If it is an engine that has been sitting for some time, with those numbers, I'd say carry on and ride it! Then retest after at least a hundred miles. Give everything a chance to loosen up and reseat.
That 80 is already improved to 110 then up to 210 from the oil you put in it for the wet portion of your test.
If it's your rider, as stated, a leak-down test will tell you ahead of time if it is rings, intake, or an exhaust valve issue.
Hope that helps.
81 Honda CB750C - Current Project
67 BSA Spitfire MkIII - Next Up (Full Resto)
81 Honda GL1100 - Bob / Cafe“
80 Suzuki GS750L - Bratstyle
72 Honda CB450K5 - Basket Case
73 Honda CB350F Cafe' (Gone but not forgotten)
Don't wait for opportunity to knock... kick the door down and drag the old harlot in!