Re: Oil leak(s)

Mick O'Connor

Done that, even stuffed tissue in each end of both rocker shafts and no oil leaking

On 21 Apr 2021, at 20:25, Jay Scheevel <> wrote:

Really sounds like it is leaking from the rocker axles. That drips down the side of each head from the axle (middle of the head) and collects on the bottom of the head as you show in your picture. Clean around the axle and put some of the talcum powder or foot spray there, then investigate after flight.


-----Original Message-----
From: <> On Behalf Of Mick O'Connor via
Sent: Wednesday, April 21, 2021 11:52 AM
Subject: Re: [JabCamit] Oil leak(s)

Thoroughly cleaned suspect areas Removed scoops and ran engine up to temp.
Noted oil collecting on lower rear of each head. Oil seems to be coming from above (circled in phot 2).
The closest oil carrying item near is the oil feed T piece, but this new and after removing clips, looks good.
I’m resigned to removing the heads unless someone has a better idea.
No evidence of leaking pushrod tubes or oil feed pipe to T piece.
I’m flummoxed !

On 18 Apr 2021, at 19:38, Mick O'Connor via <> wrote:

Engine running sweet during ‘break in’ after top end overhaul.
Unfortunately have a small oil leak from push rod tube(s) to head or maybe the head bolt grub screw(s) on no. 2 & 4 ?
Both heads have oil under the rocker cover area, it’s not the rocker cover gasket. Could be one or all 4 tubes ?
Need to investigate to confirm.
New o rings installed at overhaul. Cyls1 & 3 dry.
Anyone had leaky grub screws or tubes ?


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