REFLECTOR: Exhaust systems

Scott Derrick reflector@tvbf.org
Tue, 15 Jul 2003 10:09:21 -0600


This sounds very odd.  I think av gas in a near optimal 
mixture(Stociometric?) burns at 1500+ F. It doesn't matter whether its 
in your Honda Civic, your lawn mower or aircraft engine.

Maybe its the placement of the EGT probe.  The absolute temp is really 
of not much concern because where you stick the probe in and how the 
exhaust flows in the pipe will effect the probe temperature quite bit. 
Its the trend that is of prime importance.

Scott

John Dibble wrote:
> I just spoke with an A/P that works on Franklin engines.  He says I should not expect
> my EGT to exceed 1000 F.  Franklin engines run cooler.
> 
> John
> 
> steve korney wrote:
> 
> 
>>John...
>>
>>In that case your running way to rich...You should see temps of about 1250
>>to 1300 (f) on take-off...
>>Maybe that's the reason it stumbles so much on run-up...Lean it out...Keep
>>the temps above 1150 on the ground or you won't vaporize the lead in the
>>fuel and it will foul your plugs...
>>
>>Best... Steve
>>
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