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Engine basics => Engine set up tips => Topic started by: bob branch on February 16, 2008, 08:01:28 PM
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Randy
Can you tell me the length I should begin with using your quiet pipe on the PA .51? Also, do you measure straight line from the glow plug to the reflector baffle in the pipe or do you try to account for the length of the header offset as well?
bob branch
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Randy
Can you tell me the length I should begin with using your quiet pipe on the PA .51? Also, do you measure straight line from the glow plug to the reflector baffle in the pipe or do you try to account for the length of the header offset as well?
bob branch
Hi Bob
Tell me the props your going to use and the ROMs and I will give an answer, I will also send you the chart and engine sheet.
Typically with the quiet pipe and a 12.2 x 4.2 you would use about 17 to 17 1/2 .
This will vary longer with larger props or more pitch. And shorter with smaller props and less pitch.
I setup the chart to measure in a straight line, from the glow plug (center of chamber) , to the first baffle ( first reflective surface).
The first baffle in every Aero pipe is now at the 1/10 inch bump at the back of the pipe.
All of the new pipes have a transistion area that is 1/10 inch larger diameter at the first baffle.
If this isn't clear let me know I will post a picture
Did you get my email?
Regards
Randy
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Randy
No, I didn't get the email. ROM?
bob