Subject	Late model JDM Motor Compression
Posted by	My Harley on February 13, 2011 at 6:57 PM
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Message	Jut finished the install of a "new" low mileage 96+ JDM motor. Let it run for about 15 minutes, checked timing, idle, etc and THEN compression ~140 PSI!!! FSM says 171 is standard. Called the vendor and he said to drive it a couple of days and then check again. I put about 50 miles on it today, engine good and hot, numbers were worse. Anybody ever heard of compression getting better over time... not likely, eh? Really don't want to pull this thing back out AGAIN but expected much better from a "low mileage motor". All numbers are within 10 PSI and oil in cylinder helps which indicates ring wear. Thoughts?
Follow Ups	Late model JDM Motor Compression - My Harley 18:57:26 02/13/11 Could be as simple as sticking rings? However since all of - jzack 22:37:37 02/13/11 Re: i would be a little encouraged by the even readings - tognot 23:01:44 02/15/11 Did you test with all the plugs out , wot ,full battery , a - xteam300tt 22:40:32 02/13/11 and engine should be slightly warm too. Cold engine - jzack 23:11:39 02/13/11 Re: Late model JDM Motor Compression - My Harley 14:02:00 02/14/11 I've never heard of any real indicators that those engines - zellamay 14:43:22 02/14/11 That's because you didn't go to his vendor. - CoHPhasor 16:53:00 02/16/11 Is this a joke? Of course they say that. When I said - zellamay 21:44:21 02/16/11
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