O-200 to C-90

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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RaisedByWolves said:

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.

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.

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

bob turner said:

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.

Click to expand...

soyAnarchisto said:

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

Click to expand...

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


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

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.

RaisedByWolves said:

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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Click to expand...

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


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