I just read my response and realized an error.
I meant 180 degree motors with shared crank journals are not internally
balanced.

I don't understand your 180 degree split inline terminology.  
Are you referring to the Ferrari motor?  That would just be a 180 degree
V12.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Andrew Grebneff
Sent: Sunday, October 18, 2009 5:22 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Friday engine conversions

On Mon, Oct 19, 2009 at 9:46 AM, pdooley <psdooley@verizon.net> wrote:
> There is apparently a rigid boxer definition in which the connecting rods
> cannot share crank journals.
> Most "V" engines share crank journals and are therefore not internally
> balanced.
> True boxers have separate journals and therefore paired pistons travel in
> opposite directions and balance forces.
>
> I just learned this myself. �I thought any 180 degree motor was a boxer.

Sounds like nonsense.

I guess then it's really a 180-degree split-inline.

-- 
Regards
Andrew Grebneff
Dunedin, New Zealand
Fossil preparator
Mollusc, Toyota & VW van fanatic