We had a discussion on this at Rotormotor.

For those that don't want to use the rubber bushing in the 
firewall (trick see the jpg) we are trying to come up with a simple 
motor mount scheme. 

What is the dimension from the upper motor mount hard point
on the Long EZ firewall to the top of the fus?

What is the dimension from the lower motor mount hard point
on the Long EZ firewall to the very bottom of the fus?

See the gif. 

I think at this point it will be easier to change the hard points
on the firewall.

Paul Lamar
 
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