Snip

Mike I am doing the same type of porting to my 6 port

13B. Would

you have

any additional photos of your 6 port modifications

showing more

interior

detail of the port?

     Thanks
     Kelly Troyer
     Dyke Delta/13B

Unfortunately no.  I bought the engine running this way and

have not had

it apart myself.  You can probably get more info at Pineapple

Racing,

they

are the ones who built the

engine.   http://www.pineappleracing.com/

Mike

Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

Snip

  Mike I am interested in the 6 port entrance mods where the

metal between

the ports is removed, not the interior port mods (if any).

  Thanks

      Kelly Troyer
      Dyke Delta/13B

That is interesting. What is your reasoning Kelly?

Paul Lamar

  Paul
   From what I can tell from Mike's photo it looks like the divider wall
between the port openings has been removed entirely to some depth.

My port

openings have been ported to a "D" shape and the web between the ports
ground to a knife edge at the face of the housing.

 Kelly Troyer

I guess that will work but I think if you remove the divider completely
you will improve the flow because the skin friction from the
bottom of the top port and the top of the bottom port will
go away. You will also pick up a bit of port area. Of course
you will have to disassemble your engine and you may not want to
do that. The advantage of no divider at all over what you have
may be small. What is your psru ratio?

Paul Lamar

I will try and remember to get some better pictures this weekend when I'm
out at the hanger.  I might be able to put a pen light in it and get a
macro shot.   I know I can get my fingers pretty deep in the port and feel
the rotor.
Mike

Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

 
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