mini_me wrote:
My 10yc engine only has a breather hose going from
the rocker cover to the air cleaner.The pipe on the
side cover has been squashed closed.
Before i put my spare engine in,should I open the
side cover outlet and attach a hose to it and run it to a
catch can and reroute the rocker cover hose to the catch can as well.
Will this stop oil spirting up thru the dip stick hole
and the air cleaner hose and pressure coming out of oil filler cap.
thanks Felix
What you have is the original Morris 1100/Mini K breather system.
The squashed sidecover pipe actually has a tiny hole in it to let air IN.
The other pipe off the breather went to a sandwich plate on the carb inlet.
All I can say is it did work but was marginal at best.
I would get a side cover/breather off a late 998 Clubby (same as Cooper S had) and run both it and the rocker cover hose to a catch tank.
Yes it should stop your problem unless the rings are terminal.
If you fit K&N etc Bling filters on them instead, as the trendy Mini owners are wont to do- remember they do clog up with too much oilz if motor is getting tired...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.
