Originally Posted by az_gila
Flew to breakfast with two other local newly minted RV-6A's.
The wheel pants and fairings made an amazing difference, a lot slower CHT rise in climb to reach 400+ degrees and I could now lean in cruise.
At 10 am after breakfast the air was too turbulent to get good readings - the monsoon storms were starting - so I'll try again over the next few days. First estimate is plus 12 kts and much cooler CHTs.
If you fly Phase I and break-in your new engine where it is hot and high (DA higher than central Oregon) I would say to disregard the Plans Instructions and fly with the pants and gear fairings on.
Definitely fly with the wheel pants and gear fairings on. 20-years ago, on my 1st flight in SoCAL, I never flew without the gear fairings on but did make the first flight with wheel pants off. Temperatures were high and improvements were made with less drag. I was doing test flying the hottest month of the year.
I am with Paul Dye that they all need to be installed for all of Phase I flying. A local RV-9A was having cooling issues in Phase I. I like Paul, recommended to get the wheel pants on. Temperatures came down with their installation and proper attention to temperatures could now be addressed.
Sounds like your engine is broke in well enough to do what ever is necessary.
I like to run new engines hard when not testing airframe and airspeeds keeping power settings high but not holding same RPM longer than 15-minutes for the first 100-hours. Yes the engine does not need it but it appears to get the rings sealed well with little oil consumption. The last two sets of cylinders (2 different engines) I broke in have had oil consumption in the 30+ hours per quart when I ran them at 75% power or more as much as possible for the 1st 100-hours. Yes there was some flying at less than 65% power but I alway would run hard by myself.
I typically never added any oil between oil changes for the first 100-hours.