Chris Wilson wrote:

I have a friend that is putting a 20B turbo in a Lance Air ES and he has
talked me into a 13B fuel injected non turbo for a RV-9A.  I have
noticed the plugs up on some of the engines and some are mounted like
they sit in the car.  What is the advantage of a plugs up install?  The
cleanest install that I have seen was on a RV-6A (plugs up).  Thanks.

Fly Safe,
Chris Wilson

There are no advantages since the tall distributor was done away with
15 years ago. In fact there are many disadvantages. The engine was designed
to be run upright.

Paul Lamar
 
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