Subject: Lightweight intake running
From: ACRE
Date: 7/2/2003, 6:10 PM


Ed Anderson wrote:

Ok folks,

    Fired up the engine with the new intake with the polyurethane resin
casting plenum/throttle body - Fuel injector mount using Paul's manifold
casting.  The good news is that while I don't appeared to have picked up
any
performance at static (didn't really expect to as I put on shorter and
bigger tubes which should have raised the rpm for best torque over the
old
system), but on the other hand the plastic plenum didn't blow up either
{:>).

    Static on runup was 5400 rpm with air temp at 80F and 100% humidity.
Idle would not come down below 2200 rpm indicating an air leak.  OR the
3/16" dia hole in the throttle plate needs plugging.  I stuck my thumb
over
it and the rpm did drop, couldn't tell how much as could not watch the
tach
while doing that, but it sounded like a couple hundred rpm.  I'll use
some
JB weld to plug the hole and then see.

   Here are a couple of photos.  One of my objectives was to reduce
weight
and  I have shaved off 12 lbs off the old intake with the new one weight
11
lbs with manifold casting, tubes, plenum, throttle body, fuel injectors
and
fuel rail.  .  Another objective was to clean up the exhaust side of the
block for later putting a turbocharger there.  As the second photo
shows,
plenty of room for the turbo now, note how snuggly Paul's casting bolts
up..
Note the oil on bottom of flange from cutting and refitting oil pressure
sensor line.

Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com


BTW Ed are you going to OSH this year?

Paul Lamar


I doubt it, Paul. I'd like to go just to be with the rest of the rotary
crowd, but getting up the enthuasium for the OSH scene is a bit beyond me
this year.

Ed Anderson

I don't blame you. Too expensive and the EAA don't really like experimental
airplanes.

Paul Lamar
 
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