O-200 to C-90

[RaisedByWolves]

Hey guys, I was looking with not much luck, but is there a service letter or any info on converting a O-200 to C90. Is the cam the only difference?

Thanks
Tom


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[behindpropellers]

Hey guys, I was looking with not much luck, but is there a service letter or any info on converting a O-200 to C90. Is the cam the only difference?

Thanks
Tom


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I think the rear case mounting is the same as a C-90-16 for an 0-200.

[bob turner]

There is a conversion service letter that states it (the service letter) is FAA approved. Not sure it covers that exact conversion. I'll try to dig it up.

[soyAnarchisto]

My understanding is the service letter you are referring to (link below) allows conversion from sub-model (letter) to another letter. To convert an entire model to another model, you need a new serial number from TCM. I'd be interested to know if you think this is possible - but my reading of this does not look good. Why not just sell it, and buy what you want in a core for core exchange?

http://www.tcmlink.com/pdf2/m75-6r1.pdf

There is a conversion service letter that states it (the service letter) is FAA approved. Not sure it covers that exact conversion. I'll try to dig it up.

[dgapilot]

My understanding is the service letter you are referring to (link below) allows conversion from sub-model (letter) to another letter. To convert an entire model to another model, you need a new serial number from TCM. I'd be interested to know if you think this is possible - but my reading of this does not look good. Why not just sell it, and buy what you want in a core for core exchange?

http://www.tcmlink.com/pdf2/m75-6r1.pdf

C90 and O-200 are sub models of the same Type Certificate.


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[bob turner]

Ah, now I have to go look. Just when I was getting comfortable on the couch. . .

[bob turner]

Service Bulletin M47-16 with supplement 1 dated Feb 26,1960. But none of these specifically address the O-200. Might look at them anyway, since they have generic hints buried in them.

The SB was eventually cancelled by Continental, but since Continental does not have authority to change FAA- approved data, the SB can still be relied on.

According to Continental customer service (Harold Ames) you can convert a C-85 to a C-90 with a logbook entry, so long as you re-stamp the data plate. I stopped reading after that little morsel.

[Doug Budd]

Hey guys, I was looking with not much luck, but is there a service letter or any info on converting a O-200 to C90. Is the cam the only difference?

Thanks
Tom


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I did it experimental. Changed the cam and used chamfered c85 pistons. It really woke it up


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