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    When I built my first ES, the manual did not call for a sniffle valve on
the non-turbo'ed engine.  The manual calls for a restricted-flow elbow,
threaded into a (flush) FU-2 type brass plate.  Conversations with tech
support (back about '98) confirmed that no sniffle valve was called for.
The flush plate is a bad idea, as any drainage from it just sorta slides and
slimes its way all the way back to the tail.  A short, 45-degree-angled tube
works much better.
    Any ideas about the sniffle valve for the IO-550-N?  Needed or not?

Jim Cameron, ES Builder


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Please send your photos and drawings to marvkaye@olsusa.com.
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