The engine has to come out to get to the seal.

AJ

I just did a Mag 18 in my 1872. I'd lean towards breather failure, in some sort of way. The jugs are put together with RTV and torqued to 10 ft lbs if I remember right. To adjust the valves they need to be ground, or seats cut. This can get expensive if you don't have the tools.

During the tear down we found that the breather was torn and not working correctly. Heres the seal under the fly wheel, don't know how the engine was running!

I love pics! It's easier to see it then to think about it.:biggrin2:

I think he was referring to Hefner's mag!! :bigthink:



:biggrin2:

Not I! My wife wouldn't allow such a thing.:biggrin2:

I am new to these M18's also. When you say breather which part are you talking about, part # 9? What should I look for? How do you know if the filter is good? It may be obvious, but I haven't gotten that far yet. Since it has been mentioned, I just thought I would ask.
I actually have two of these engines now. One runs great, the other is blowing oil from the breather tube.

http://i46.photobucket.com/albums/f1...ilbreather.gif

Chip, I think they re-designed the #1 breather IIRC when I did my mag. I will see if I can find some pictures.

# 8

Mine was just laying in there not in place, and that little filter was MIA. I'll post some pics from work today as all the rebuild pics are on that computer.

Oh and the P/O said it seemed to be running hot, what do you think? :biggrin2:

Heres that same eng after we re ringed it. Now The sears specs on the cylinder jugs were like with in .002 of being new spec, so I deglazed the cylinder walls and put in the new rings from the original 1872 eng. My rings measured to the new spec, so I feel Ill have this eng a long time. Frank my boss has one of these snap on scopes we use to look inside engs mostly for low oil runs and broken rods. Saves so much time! So we used it to look at the gov gear, cam and tappets. To seat the rings Ill put the pto on and that big deck from Dukes 20 and go find a hay field that needs mowed!

Vince,


Hows that left index finger feeling ?? :biggrin2: