REFLECTOR: Exhaust systems

[Scott Derrick]

I can also easily get 220 HP out of my Lycomiong by installing high 
compression pistons.  No magic there. It requires a high octane fuel and 
  it does wear the engine out out a tad faster, probably not measurable 
unless you look at 100's of engines.

I think the  EGT's your seeing are lower because of probe placement 
alone.  I have two holes in one of my exhaust pipes.  Because the first 
placement was not in the main flow and showed 75 degrees cooler than the 
other probes. about 90 degrees around at the same distance and the temps 
were aligned.

Scott


Brian Michalk wrote:
>>observed that peak EGT is about 1400 degrees on engines as diverse as A/C
>>and two-cycle motorcycles, so I will be surprised if the Franklin
>>engine is
>>really 500 degrees cooler.
> 
> 
> I would be surprised if it were this much cooler as well.  50, okay.  100
> degrees barely maybe.
> 
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