Rear Firewall Access Door Installation

mhudsonbsme · #1 12-16-11, 11:48 AM

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?

Ernie Martin · #2 12-16-11, 06:35 PM

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

WebMaster · #3 12-20-11, 11:45 AM

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

rhurt · #4 12-21-11, 09:30 AM

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.

mhudsonbsme · #5 01-07-12, 07:31 PM

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