CubedRoot
Well Known Member
Hey all,
I've been reading a bit on engines, and even though I am a LONG way from needing one, I still find it amazing just how in the last few years the engine options available to RV's has increased with so much "goodness".
I have been tossing the idea around of installing an IO-390 into my RV-7, especially considering that Cirrus will begin using them in their aircraft, which means parts and pricing should turn more favorable in the future.
HOWEVER... I have also been looking at the IO-382, XP-400, IO-375 and all the other variants. There are numerous threads sprinkled on the forums from a few years ago with guys building with these engines, but I was hoping we could get some conversation going on these larger engines (larger than the typical IO-360 that people use) in RV-7's.
For the folks that have built with these large engines, can you please post some performance numbers? Stuff like weights, full power performance, economical cruise performance, climbs, etc.
It would also be great to outline any "gotchas" that you came across with building these larger engines in your -7. Things like firewall forward kit issues, exhaust and cooling challenges, custom work you had to do, etc.
I'll even put a poll up on this thread to get the convesation going.
I've been reading a bit on engines, and even though I am a LONG way from needing one, I still find it amazing just how in the last few years the engine options available to RV's has increased with so much "goodness".
I have been tossing the idea around of installing an IO-390 into my RV-7, especially considering that Cirrus will begin using them in their aircraft, which means parts and pricing should turn more favorable in the future.
HOWEVER... I have also been looking at the IO-382, XP-400, IO-375 and all the other variants. There are numerous threads sprinkled on the forums from a few years ago with guys building with these engines, but I was hoping we could get some conversation going on these larger engines (larger than the typical IO-360 that people use) in RV-7's.
For the folks that have built with these large engines, can you please post some performance numbers? Stuff like weights, full power performance, economical cruise performance, climbs, etc.
It would also be great to outline any "gotchas" that you came across with building these larger engines in your -7. Things like firewall forward kit issues, exhaust and cooling challenges, custom work you had to do, etc.
I'll even put a poll up on this thread to get the convesation going.