Engine Swap Question

simonlowther · Post by **simonlowther** » Mon Feb 21, 2022 11:22 pm

Is a change from a C-85 to C-90 just a straight change, or is there more to it?

Si

Post by **6643** » Tue Feb 22, 2022 1:20 pm

It's pretty straight forward. The exact requirements are spelled out in Note 5 of aircraft specification A-768. You'll likely need to repitch your prop, unless you currently have a cruise prop.

simonlowther · Post by **simonlowther** » Tue Feb 22, 2022 4:37 pm

Thank you
Si

6298 · Post by **6298** » Tue Feb 22, 2022 6:00 pm

If the C-90 is a -14 or -16 the same mount will work. If it’s a C-90-14 you will need a different mount.

4004 · Post by **4004** » Wed Feb 23, 2022 1:50 am

Randy, check your response - C-90-14 will or won't require different mount? There's always one smart XXX in the crowd!

Post by **6643** » Wed Feb 23, 2022 9:56 am

I think that's a typo and he meant "-12 or -16."

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