What's new
Van's Air Force

Don't miss anything! Register now for full access to the definitive RV support community.

RV8, IO390, Showplanes cowl

JDA_BTR

Well Known Member
So this is my combination. It was my understanding that with an IO360 the showplaces cowl needed a 2" extension on the prop flange. Is this the same with the IO390? If such is still needed, where is the extension gotten from?

Also, there isn't a firewall forward kit for the 390 on the RV8. Any suggestions?
 
Thanks for that I def needed the link. I'm hoping someone chimes in to answer the other questions....
 
It might depend more on the prop than the engine or cowling. I know most Hartzells require an extension, but my Whirl Wind 200RV prop did not need one for my IO360.
 
A metal Hartzell on a shaft extension with a 390 is going to be heavy in pitch when solo....like two hands for a loop entry. Tough on motor mount rubber too.

Mine is quite heavy without the shaft extension.
 
Modified Vans cowl, standard length.
.
 

Attachments

  • P1140002.JPG
    P1140002.JPG
    220.3 KB · Views: 102
Back
Top