Lyc 390 Thunderbolt and cowling fit
RV14A, Lycoming IO-390 Thunderbolt
I spent the weekend trimming the top and bottom cowlings to fit to the fuselage. I trimmed to the scribe lines and they fit nicely at the forward fuselage cabin skins at the firewall.
The problem I have is that the forward face of the cowlings - right behind the spinner backplate both top and bottom, are pressed tightly against the spinner backplate.
There is supposed to be about a 3/16” clearance there.
This might require trimming the back edges of the cowlings another 3/16”, but that may cause other issues - so I am not going to do that without some clear direction form Van’s.
It might be something entirely different. I have gone back over propeller installation and everything seems per instructions.
Looking for any other RV14A builders who have fitted the cowlings to a 390 Thunderbolt?
Simpsonville, SC (SC47 - 10nm NW Triple Tree, SC00)
1946 Bellanca Cruisair 14-13-2 (72 YRS OLD 8/15/18)
RV14A (N14ZT), Ser#140195
IO-390 Lyc Tbolt / CS Hartzell
Well into the panel and its stuff now
Dues paid 12/1/17 (USArmy 2/67-2/70)
Last edited by jeffw@sc47 : 09-18-2017 at 06:36 AM.