Any Universal M-40 Experts Out There?

[erobitaille]

My M-40 has started to spurt a small amount of oil out the breaker tube. It has never done this in the past, changed the oil this spring it is at the proper level. Engine seems to run fine but now i need clean up a small (about the size of a quarter) puddle on the deck behind the ladder every time we take her out. I think I willinstall a small catch bottle that will still alow the breather to breath.

Anyone have a suggestion why it is spitting oil?

 

[u079721]

Our M40 (or 5432) also suffered from "blow-by", in spite of the efforts of my mechanic. I ended up doing a modification in which I routed the breather tube to the side of the air intake. If you hunt around you can find a lot of mention of this simple modification, especially among Catalina owners for some reason. All the oil gets sucked back into the engine.

There has been some suggestion that this modification can mess things up a bit, since you can be changing the pressure inside the engine, but it seemed to work just fine for me.

 

[Loren Beach]

"Deep Breathing Exercise"

I did a quick site search on the word Crankcase and got some allied threads.
This one looked to be closest to the subject. Mainsail also has a great picture article on his own site showing how he arranged the crankcase breather hose back to the air intake on his Universal.
http://www.ericsonyachts.org/infoexchange/showthread.php?t=7812&referrerid=28

Regards,
Loren

 

[erobitaille]

Thank you gentlemen, great stuff. Now that i think about it does make more sense to return it ot the intake and burn it off rather than collect it ( my original solution)then trying to get rid of waste oil.

 

[rwthomas1]

I did a K&N filter and had this thread on the install a while back. http://www.ericsonyachts.org/infoexchange/showthread.php?t=4770&highlight=K&N+filter
The breather hose was simply connected to a nylon 90* fitting pressed into the rubber back of the filter itself. Any oil that gets spit out of the breather just gets ingested by the engine or ends up on the filter media, no big deal. Works great. RT

 

[erobitaille]

Rob,

Thanks for the info the installtion looks great! Like you my engine did not have a "filter element" which allways bugged me. I ordered the K&N this AM.

 

[stobias]

The M-12's in my E 26 and my old E 28, came from the factory with the breather tube clipped right onto the intake box.