<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
>>
Dan,

Regarding airbox configurations; I did the following

installed a modified IO320B1A sump from Lycon in Visalia, Ca. on an
O-360F1A6 Lycoming.  They closed the back end, turned the pipes around and
opened a hole in front, Purchased an airflow performance fuel injection
system and alternate air valve from them and installed the large cowling
belly.  This configuration requires you extend the front intakeforward to
the prop spinner cowling flange to allow for the large alternate air valve
and the opening is right under the prop spinner flange. I then made an
alterate air filter box with a piano hinge flapper gate that is normally
sealed in the down position.  It flops by gravity.  The alternate air valve
has a forward butterfly which you control.

The results are:
Ram air with a 1.2 in hg boost at cruise.  The MT prop pressurized the
intake which is about 3/4 inches behind the prop.  The alternate air is
filtered for ground running and takes warm air from inside the cowling.

By the way, this combination was considered a certified engine because
I did not modify the reciprocating parts in the rebuilt engine and the
engine prop combination was certified. Only 25 hours was required to
fly off the restrictions.


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>