• The Biplane Forum is a large global active community of biplane builders, owners and pilots. From Pitts to Skybolts, to older barnstormers, all types are welcome. In addition to our active community, our content boasts exhaustive technical information which is often sought after for projects and maintenance. This information has accumulated over the 12+ years the forum has been in existence.

    The Biplane Forum is a private community. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched source of information not found anywhere else on the web. We are also a great resource for non biplane users, since many GA aircraft are built the same way (fabric and tube construction). Annual membership also comes with two BiplaneForum.com decals.



What's in my oil?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

EAABipe40FF

Registered Users
Supporting Member
Joined
May 29, 2009
Messages
7,304
Reaction score
1,879
Location
Springfield, WV
I installed this 2055 SMOH IO320B1A in the AD2 and found this in the filter after 27 hours. I guess mostly carbon? A couple flaks of chrome, I did install some new rings? What has me puzzled is the gray stuff on right? It's somewhat magnetic. I thought it was lead or AL until the magnet picked it up? Maybe it's something with iron in it?

I'm new at this. At least no slivers off my cam...so far.

This engine had been well maintained and stored well after an oil change. I had all 4 cylinders off and looked good inside. I changed all oil rings and a couple others. Been running it hard. Compressions are 78, 78, 74, 74/80 It had used less than 2 qts. in the 27 hours.

GEDC4100.jpg
 
Last edited:

Latest posts

Back
Top