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Engine basics => Engine set up tips => Topic started by: John KruziK on June 22, 2007, 07:19:03 PM

Title: NVA
Post by: John KruziK on June 22, 2007, 07:19:03 PM

I have a fox 25 and was wondering where exactly the hole in the needle valve should point. Some engines have it facing straight down, others have it facing forward. Which way is correct Thanks John

Title: Re: NVA
Post by: Marvin Denny on June 22, 2007, 08:25:08 PM

  Pretty well straight down toward the crankshaft or parallel to the air flow down the venturi.  It is not really critical as long as it is somewhat close to downward toward the crank shaft.

  Bigiron

Title: Re: NVA
Post by: Tom Perry on June 22, 2007, 09:04:36 PM

Turn the spraybar untill you can see the hole.  Then turn toward the front until you can no longer see the hole when looking straight down.  Think of a perfume atomizer and how it works.

Title: Re: NVA
Post by: John KruziK on June 23, 2007, 06:50:48 AM

Thanks for tips      John