Call me dumb......

Stuka Stunt Main Forum · 6 of 6 known posts recovered

Bill Little · May 25, 2004 12:36 PM

You have my permission! I have searched the threads on the OS 20 and 25 FP set ups, but I miss the venturi sizes. I can only find "stock" being referred to. Are the venturis for both the same?
I have a "stock" 25FP venturi, but don't know if it is the same as other "stock 25 fp Venturi or the 20 venturi.
TIA
Bill <><

When the character of a man is not clear to you, look at his friends.
Japanese Proverb

SRiese5283 · May 25, 2004 12:41 PM

#1 source

OK.....YOUR DUMB!

Now what? .250

You could of called???

Scott(don't call my RAY JAY)Riese

Scott Riese

Bill Little · May 25, 2004 12:45 PM

#2 source

LAST EDITED ON May-25-04 AT 12:46 PM (CDT)

Scott, for both the 20 and 25?
Did you get the money? Hope it didn't bounce too high! hahahaha
Thanks,
Bill <><

When the character of a man is not clear to you, look at his friends.
Japanese Proverb

Leonard Neumann · May 25, 2004 01:28 PM

#3 source

>OK.....YOUR DUMB!
>
>Now what? .250

Actually the stock venturi as supplied by OS for both the 20 FP and 25 FP is .257

Leonard Neumann

Elwyn · May 25, 2004 04:22 PM

#4 source

One of our clubmembers was having difficulty running a 20 with the bigger venturi even using an air filter. He went down to a 228 which did fine. Not sure what needle valve he had. Probably an ST.

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LNeumann · May 25, 2004 06:37 PM

#5 source

>One of our clubmembers was having difficulty running a 20
>with the bigger venturi even using an air filter. He went
>down to a 228 which did fine. Not sure what needle valve he
>had. Probably an ST.

The .228 is what I recommend for the .20 with the OS needle. Use a .238 with the 25. Then you can go to a less restrictive muffler and you won't lose power.

Leonard Neumann