CorvAircraft> Hydraulic lifters....

[Dave Morris "BigD"]

Describe your pushrods.

Dave Morris


At 10:34 PM 6/21/2006, you wrote:
>I just started my Corvair engine for the first time.  I set up the hydraulic
>lifters according to WWs manual....before they were filled with 
>oil.  I primed
>the system by running the oil pump with an electric drill.  It showed oil
>pressure and everything looked good, although I could tell that the lifters
>weren't pumped up with oil...I could still depress them by 
>hand.  When I started
>the engine, it was very loud because I'm running a straight pipe off the
>exhaust.  I thought the lifters were chattering but the exhaust was 
>so loud, I
>couldn't be sure.  I ran the engine for about a minute before 
>shutting it off.  I
>rigged up a muffler so that I could tell a little more about the 
>engine sounds,
>and when I started it again, I could tell that the lifters were chattering
>badly.  I ran the engine for about a minute, waiting for them to pump up with
>oil..and they never did.  So I shut it off.  I had a friend 
>(mechanic) come over
>and had him listen to it.  He agreed...the lifters were making a LOT 
>of noise.
>  He suggested pulling the valve covers off to have a look.  As I was taking
>the covers off, I asked him if there would be oil dripping out when they came
>off.  He said, "probably a little."  When the covers came off, everything
>inside was bone dry.  No oil had made it to the top of the 
>heads.  The engine had
>run about 4-5 minutes by now.  I know that's not right.  The oil filter is
>full....(I'm running a remote filter).    We checked the oil lines by
>disconnecting the return line and turning the prop by hand.  It 
>produced plenty of flow.
>While the engine was running, it always showed about 40 lbs of oil pressure.
>
>Does anyone have an idea why the lifters are not pumping up properly?   The
>oil galleries are clean...the gallery plugs are in place...practically
>everything in the engine, including the lifters, are new.  It wants 
>to run...it idles
>smoothly at 500 rpm.  I didn't run it more than about 1500 rpm...but the
>lifters never got quiet.   I don't want to run it again, until I 
>have figured this
>problem out.
>
>Help!!
>
>Dave Harms
>videoflyer at aol.com
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