PA22 O320 STC question

Rgeboy

FRIEND
Newnan, GA
I have a PA22 with an O290-D2. The engine has a bad cam and low compression on two cylinders. So, I'm thinking about upgrading to an O320.

My question is which O320? I have read that an O320- A1A has the STC for a Tri-Pacer. So is that the only O320 I can use?

Any help and advice is appreciated!
 
Lots of good information on this popular modification. There are other similar discussions here as well. O-290s are getting harder to keep running.
 
Lots of good information on this popular modification. There are other similar discussions here as well. O-290s are getting harder to keep running.
Yes,they are hard to keep going. I cannot find anyone that has a cam and cylinders. So, I am "forced" to go with the O320. Thank you for the posting.
 
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