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Engine basics => Engine set up tips => Topic started by: scott v. on October 03, 2016, 09:03:03 AM

Title: Enya 25ss venturi
Post by: scott v. on October 03, 2016, 09:03:03 AM

Hi, does anyone know what the venturi size would be for this motor ? Choices are 6.5, 7 and 7.5mm

Thanks, Scott V.

Title: Re: Enya 25ss venturi
Post by: Gerald Arana on October 03, 2016, 10:03:51 AM

I'd go with the 6.5 mm.

Jerry

Title: Re: Enya 25ss venturi
Post by: Brent Williams on October 03, 2016, 02:04:18 PM

The Enya needle valve assembly has a much bigger cross section than general O.S. FP/LA variety.  The 7.0mm might not be too out of step from a choke area consideration.  Brett Buck has written some good essays on venturi choke area on the LA25 which *should* apply generally to the Enya SS25.   You might like the larger venturi to get appropriate power from the engine.  YMMV.

6.5mm =.255"
7.00mm = .275"

Title: Re: Enya 25ss venturi
Post by: scott v. on October 04, 2016, 06:21:43 AM

Ok, thanks

Scot V.

Title: Re: Enya 25ss venturi
Post by: Chris Wilson on October 05, 2016, 07:35:04 PM

The benefit of going with a smaller venturi is that you can always make a small cylinder of sandpaper and abrade it larger and doubly so when the venturi is made of plastic.

Title: Re: Enya 25ss venturi
Post by: Brett Buck on October 07, 2016, 06:45:59 PM

Quote from: scott v. on October 03, 2016, 09:03:03 AM

Hi, does anyone know what the venturi size would be for this motor ? Choices are 6.5, 7 and 7.5mm

Thanks, Scott V.

   What is the diameter of the spraybar?

    Brett

Title: Re: Enya 25ss venturi
Post by: RandySmith on October 07, 2016, 08:45:14 PM

Use  the  7 or 7.5 mm  venturie  with the Enya  NVA  , I would use the  7.5  unless it went on a very small light model

Randy

Title: Re: Enya 25ss venturi
Post by: scott v. on October 10, 2016, 01:45:24 PM

I don't have the nv assembly yet but will measure when I get it.

Thanks

Title: Re: Enya 25ss venturi
Post by: Brent Williams on October 10, 2016, 06:04:54 PM

Quote from: Brett Buck on October 07, 2016, 06:45:59 PM

   What is the diameter of the Enya spraybar?

    Brett

0.155" for the Enya spraybar.

Title: Re: Enya 25ss venturi
Post by: scott v. on October 13, 2016, 01:08:10 PM

Thank you everyone

Title: Re: Enya 25ss venturi
Post by: Bill Johnson on October 13, 2016, 09:54:28 PM

I would think the larger venturi, as Randy suggested, would be the way to go. While you can open up the smaller ones, that's not generally a field adjustment while with the larger one, a layer or 2 of panty hose material will effectively "detune" it and can be adjusted as needed at the field.