Engine Mounts for 180hp C172M

[Rob[_2_]]

Has anyone had experience of the differences between Lord and Barry
engine mounts - particularly in a C172M with a 180hp conversion?
I am in the process of having my engine reconditioned and I will
replace the engine mounts.
For all the time I have owned the aircraft (C172M with Avcon 180hp
conversion), the engine vibrations have cracked the cowl fasteners
(the actual metal supports which are riveted to the firewall).
The cowl mounts are the Skybolt SK series.

Now I wonder if the engine mount type will make a difference to how
much vibration is transferred to the fuselage. Currently the aircraft
has Barry mounts.

Any ideas?

Thanks
Robin

[Jim Burns[_2_]]

We put Barry mounts on the right engine of our Aztec when we replaced them
about 300 hours ago. They are still holding strong. The Lord mounts on our
left engine will get replaced this winter when the engine gets overhauled.
The only reason we chose Barry over Lord was price. If I remember correctly
I ordered them from www.aircraftsuppliers.com

Have your prop dynamically balanced after your engine install.

Jim

[kontiki]

Jim Burns wrote:
> We put Barry mounts on the right engine of our Aztec when we replaced them
> about 300 hours ago. They are still holding strong. The Lord mounts on our
> left engine will get replaced this winter when the engine gets overhauled.
> The only reason we chose Barry over Lord was price. If I remember correctly
> I ordered them from www.aircraftsuppliers.com


There is a reason Barry mounts are cheaper. You'll end up replacing them
sooner and/or your props will go out of balance sooner.

[Jim Burns[_2_]]

The Lords I removed from the right engine were installed at overhaul
(previous owner) and were baked and sagging pretty bad after 500 hours.
After 300 hours the Barry mounts look and act like new, although I installed
extra heat shielding around them when I installed them.

What's been your experience?

Jim

"kontiki" > wrote in message
...
> Jim Burns wrote:
> > We put Barry mounts on the right engine of our Aztec when we replaced
them
> > about 300 hours ago. They are still holding strong. The Lord mounts on
our
> > left engine will get replaced this winter when the engine gets
overhauled.
> > The only reason we chose Barry over Lord was price. If I remember
correctly
> > I ordered them from www.aircraftsuppliers.com
>
>
> There is a reason Barry mounts are cheaper. You'll end up replacing them
> sooner and/or your props will go out of balance sooner.