Originally Posted by Gnvflyer
I'm setting up my Vetterman exhaust on my RV9A. How much clearance should I try to get between the tail pipes and the bottom edge of the firewall?
Right now I've got a little over 1/2" and I suspect that might be too close.
I have clearance of less than 1/2” with no issues. However, it may depend on how your exhaust is “hung”. I have suspension clamps very close to the exit opening - the mounting points act as a pivot during the start-up/shutdown shake and minimize the clearance needed. (RV-14A, Lyc 390, Vetterman exhaust)
RV-14A Builder - kit #136 (complete) and #770 (in process)
N314KC - First flight Mar 8, 2017, 24th in the air, >950 hrs
XP-400 Aero Sport Power, replaced with Lyc Thunderbolt 390
Sport Pilot (weight-shift control) - Airborne XT912
Dues paid 9/2022