tx_jayhawk
Well Known Member
I have an O-360 on my 7A with a Sam James cowl and plenum. I have found that my #1 cylinder runs 40 - 60 degrees cooler than #3, and #2 / #4 are within 10-15 of #3.
Question is this...if I want to lower #3 and raise #1, what is the best way? I do not have the standard baffles so the setup is a littel different. Should I glass up an extension to the plenum ramp to "force" more air to the #3 instead of #1? Or, rivet a ramp to the small piece of metal between #1 cylinder and the plenum ramp? I think my plenum / baffles are otherwise sealed quite good.
Similar question...what kind of CHT / oil temp rise do people see when they lean out the engine? It seems I get a fairly notable rise when leaned to 100 rich of peak?
Thanks,
Scott
7A
Question is this...if I want to lower #3 and raise #1, what is the best way? I do not have the standard baffles so the setup is a littel different. Should I glass up an extension to the plenum ramp to "force" more air to the #3 instead of #1? Or, rivet a ramp to the small piece of metal between #1 cylinder and the plenum ramp? I think my plenum / baffles are otherwise sealed quite good.
Similar question...what kind of CHT / oil temp rise do people see when they lean out the engine? It seems I get a fairly notable rise when leaned to 100 rich of peak?
Thanks,
Scott
7A