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Engine basics => Engine set up tips => Topic started by: Robert Zambelli on April 02, 2019, 09:08:33 PM

Title: OS Max 35 S venturi
Post by: Robert Zambelli on April 02, 2019, 09:08:33 PM

Hi, Gents.
I lost my venturi for my 35 S and I made a new one.
What is the proper inside bore?
I'm using the standard OS NVA.

THANKS, Bob Z.

Title: Re: OS Max 35 S venturi
Post by: Mark Messmer on April 03, 2019, 06:09:41 AM

I use around a .281 or so on mine .

Title: Re: OS Max 35 S venturi
Post by: RandySmith on April 04, 2019, 03:03:28 PM

Quote from: Robert Zambelli on April 02, 2019, 09:08:33 PM

Hi, Gents.
I lost my venturi for my 35 S and I made a new one.
What is the proper inside bore?
I'm using the standard OS NVA.

THANKS, Bob Z.

Depends  If you are  using  the stock  703  muffler  then use a  .305 restrictor, if you are using an open tube muffler  or  tongue  muffler  then use a  .281  restrictor

Randy