STC for 1977 7GCBC

A

Anonymous

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Wanted to know if anyone knows of an stc to replace the original O320A2D 150hp with a 160hp in my 1977 Citabria 7GCBC.

Bill S.
 
Hi, I know someone in the US who upgraded his 7ECA with a 160hp. If you want to email me at mike@poetpilot.flyer.co.uk I will try to put you in touch.
 
Dear Bill:

You don't need an STC; get the installation drawing from A.C.A. for their current O-320-B2B engine and you can replace it referencing T.C. data. We had an entire article on this in "More Horsepower for your Citabria" in the October 2001 B-C Contact! (11-4)

Regards,
 
From reading various sources my understanding is that if you have your 150 HP overhauled by Lycoming you get back a 160 HP engine because they go from flat to domed pistons (and maybe other items) that raise the compression ratio to perform better with 100LL.

Vernon
 
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