Subject: Chuck Dunlap's Intake Manifold
From: Paul
Date: 10/17/1999, 6:36 AM
To: zz

X-Mozilla-Keys:                                                                                 
Chuck Dunlap wrote:

James Phillips wrote:

Hi Chuck Dunlap, That is a great looking installation! Is that an RV-6 or
something else? I would be interested in knowing how it all performs. I'd
also love to see any other views of your engine installation that you might
have. What are the lengths of your intake runners? Are you using a dynamic
chamber like Tracy's? It looks like the stock water pump config if so then
there must be ample room. Any more info you have would be appreciated.
Thanks, James T. Phillips

The intake runners are 18 1/2 inches measured along the centerline of the tubes,
from flange to flange. The dynamic chamber is 11" long, 9" wide, 4" tall. There
is nothing inside except the airflow horns, I think Tracy's has separate chambers
for the primary and secondary. The static RPM went from 4200 to 4700 with this
manifold. The 4200 RPM was with a plenum box sitting on top the stock manifold
part, no tubes. This is a RV-6, at least 6 months from flying. I will send some
more pix when I get done reconfiguring the radiator and oil cooler. I had the
radiator behind the engine and the oil cooler up front but could not seal the
front of the rad. to keep exhaust heat out of it. Would overheat after 15 min of
idling.

Chuck Dunlap


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