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Aviation > Helicopters > Tuned exhaust f...
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Tuned exhaust for the Lycoming 0320

by "Stuart & Kathryn Fields" <sfkf@[EMAIL PROTECTED] > May 11, 2008 at 06:58 PM

I'm just having more fun than should be legal and it probably isn't if I 
look far enough into the County, State and Federal statues, but I am 
never-the-less.  I have pretty much followed the Cafe numbers for header 
length and the 4-into-one collector.  Keeping in mind friend****p to my 
neighbors, I also included a muffler.  I purchased the collector and
muffler 
from Barnes Stainless and will be purchasing the header tubing, 321SS from

the same source in all likelyhood.  A/C Spruce has the tubing listed at 
$8.75/ft.
I've made up some PVC headers complete with flanges glued on and am
heating 
the PVC with a heat gun and bending them until I get the pipes where I
want 
them.  The plan then is to take the bent up PVC to a muffler shop that has
a 
mandrel tube bender and have them bend up the expensive 321 SS tubing.  I 
plan on welding in some of the 3-bolt  ball fittings to both ease the 
stresses and make installation and removal easier.
My plan is to install the stock exhaust, do a hover and check the MP and 
then quickly change exhaust systems and repeat.  I'm hoping to see a MP 
improvement.
I've had this plan in my "Round Toit" list every since I read the Cafe 
study.

Dang I sure do like the experimental category.  No bureacrats in the way.

Stu
 




 4 Posts in Topic:
Tuned exhaust for the Lycoming 0320
"Stuart & Kathry  2008-05-11 18:58:02 
Re: Tuned exhaust for the Lycoming 0320
"Stuart & Kathry  2008-05-19 08:25:03 
Re: Tuned exhaust for the Lycoming 0320
"Stuart & Kathry  2008-05-22 16:37:09 
Re: Tuned exhaust for the Lycoming 0320
The OTHER Kevin in San Di  2008-05-23 10:15:52 

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tan12V112 Sat Nov 22 4:38:29 CST 2008.