In article ,
Tina Marie wrote:

In article , Greg Hopp wrote:
Partner and I have grounded the plane. The gents hanging out at the
FBO say, put a wrench on her and fly the darn thing. We'd prefer to
stay safe, legal and alive.

Don't just crank it down with a wrench! In general, every bolt connecting
everything to your engine has a proper torque. A lot of those torque settings
are way lower then you'd think, and you can overtorque things easily.

With that said, you have two choices he

A) Put a torque wrench on it, tighten it and then fly it. Torque
settings are in the Lycoming Direct Drive Overhaul Manual (~$17 for a
reprint from Aircraft Spruce, or find the equivalent Continental
publication). Check it every few hours.

B) Take it to your A&P. He will pull out his torque wrench, his copy
of the Lycoming Direct Drive Overhaul Manual, tighen it, and tell you
to check it every few hours.

It's up to you.

Tina Marie
Tripacer N3653P

According to my Lycomung Overhaul Manual, the cylinder torque settings
a

1/2" base nuts: 600 in-lb (50 ft-lb)

3/8" base nuts: 300 in-lb (25 ft-lb)

Tightening sequence: (1/2" first)

On the O-235, tighten as if you have 1/2" bolts, too

1/2" 3/8"

4 1 4 1

3 2 3 2