Rear Firewall Access Door Installation
 

Has anyone taken a firewall access door off of a later model 337 and installed it on an earlier model? I have all of the parts off of a 76 and would like to retrofit it to my 65. Anyone do this?

The problem is that the firewall in the later models may have been reinforced to account for the door. Cutting a hole in an earlier model may weaken the firewall. Aside from the risk, you may find that no one will sign the 337 form without a structural analysis.

Ernie

Stc
 

Owen Bell owns the STC to do that.
Buy the STC from him, have your maintenance facility install it.

Owen installed one in my 337c last fall (2010). It cost around $1,000 for the STC and about that much for the installation. Since then I have used the opening to install the drain for an air/oil separator and to install new spark plug wiring harnesses. There might be a way to use your later model door in the firewall. Owen would know if there is: (615) 865-1802.

Thanks for the info
 

Thanks for the information. I am going to go with the one from Owen. The cost is really reasonable. Thanks all!