|
Guys, (and ladies)
Previously I wrote: "I know that overheating
can be a symptom of too much advance. Is there any useful
correlation?"
I meant over a broad term. Suppose you
get used to your engine over hundreds of hours and years of normal
operations.
Then, you start experimenting. A new cooling
plenum, an electronic ignition or two, higher compression pistons, iridium plugs
and maybe even Krugerize your fuel injectors with ram air shrouds. Each of
these changes affects performance and effective timing. Of course, you're
adjusting timing as well and there is a trend of higher CHT's with increasing
advance. (over the whole operating envelope but more noticeably at higher
power).
So, now you have to wonder if anything you can do
on the ground to set timing is sufficient.
If the temps are generally comparable to what you
had initially with the stock setup (well below 400 for all operations) , are you
conservative enough?
Mark Ravinski
N360KB 1361 hrs
(an engineer without a test stand)
|