Just wondering how often do you guys change the pins on your engines.

When you change the connecting rod....

And also change the wrist pin retaining clip.

Logo 600SXs, 800XX, TDR IIs

Thought maybe every 2nd year.

There is no set date.

Logo 600SXs, 800XX, TDR IIs

Unless you have another reason to open the engine, I would certainly not do it just to replace them.

Never reuse them.

After a very long time! Change the clips if you are changing the piston though. The conrod will wear first but even then mostly at the crank end. I once bought a conrod for my 105 as I was replacing the piston and thought I might aswell as I had it apart but the new one had no less play than the old one so I never put the new one in!

60% of the time, it works every time!

Piston pin retainers

Never - unless there is some overriding reason to. i.e. one slips out of my needle nose pliers and shoots across the room, gets tweaked (however slightly) while being removing or inserting, becomes corroded etc. Helicopter motors do not see sufficient stress to warrant changing gudgeon retaining clips on an interval.

Bill

"Well, Nothing bad can happen now."