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I talked to Aerosport Power on Friday about my engine issue. They gave me three different quotes to get me a healthy engine again:

  1. repair the engine, with the original configuration tappet and cam
  2. repair the engine, modify it for roller tappets and cam,
  3. trade the engine in on a new engine with roller tappets and cam.

Option 3 is much, much more expensive than options 1 & 2. The difference in cost between options 1 & 2 is small enough that it seems like the best plan is to convert the engine to the roller tappets and cam.

Removing the propI spent most of the weekend at the hangar, removing all the things connecting the engine to the airframe, like peeling an onion, layer by layer.


Engine removed.  It's a pretty sad looking airplane now :(Finally, late Sunday afternoon, I was able to pluck the engine free. I need a bit more time to remove some of the accessories on the back of the engine, then I’ll put it in the crate and send it on its way to Kamloops.

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  • It is a tough pill to swallow and something you don't expect with a new engine. Good luck with your repairs and I am looking forward to the post mortum. Personally I think the roller tappets don't offer enough to justify the added cost - the engine is really good even with plain tappets. Minimum cost to airworthy works for most people.

  • Yeah, I'm not too happy about this event, but no point in crying over spilt milk. I just need to get on with dealing with it. I agree that the vast majority of people get good service from the original design plain tappets. For some reason I am not one of those people. One of the Mooneys in my hangar also had a recent cam issue, and I heard of a local Lake Buccaneer guy who had two events in fairly short order (all these are angle-valve engines).

    For me, given that I have had two events in less than four years, the cost of the mod looks like a good investment. I'd expect to get a small portion of it back whenever it comes time to sell the aircraft, as that should make it more desirable.

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