S&S Carb Help!

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S&S Carb Help!

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Harley Davidson Forum >> Harley Davidson Motorcycles >> Classic >> Shovelhead >> S&S Carb Help!

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S&S Carb Help! - 5/5/2008 7:19:46 AM

fiveola

Posts: 29
Joined: 10/3/2007
Status: offline

Hello,
I've just rebuilt my S&S carb per specs and now have it mounted on the manifold with the throttle cable attached. Possible issue: Is the butterfly when the throttle cable disengaged supposed to be closed flush with the venturi hole or carb body hole? Even with the throttle cable removed, it doesn't seem to want to close shut. I need some good advice here. Thanks.

Post #: 1

RE: S&S Carb Help! - 5/5/2008 8:41:48 AM

Rodney

Posts: 686
Joined: 5/23/2007
From: Central Oregon
Status: offline

is you idle screw, screwed in holding the butterfly open?
dose the butterfly open and close smoothly?

_____________________________

1968 FLH owned for 30 years
2002 FXSTDI

(in reply to fiveola)

Post #: 2

RE: S&S Carb Help! - 5/5/2008 9:23:00 AM

fiveola

Posts: 29
Joined: 10/3/2007
Status: offline

The idle screw is not hanging up the butterfly and the butterfly opens and closes smoothly. The butterfly and throttle shaft are new (came w/ the kit) and I did notice the new butterfly is snug. Should I re-use my old butterfly? Thanks Rodney.

(in reply to Rodney)

Post #: 3

RE: S&S Carb Help! - 5/5/2008 9:33:14 AM

DeJavu

Posts: 2824
Joined: 6/29/2007
From: Bellville, Tx
Status: offline

Your butterfly may not be perfectly centered, try loosening the two screws that hold it in place. Just 1/2 to 1 turn loose, the butterfly should close completely. The butterfly should float right into position. Tighten the crews again. Good Luck.

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You find out who your bros are when you ride a kick only bike.

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Post #: 4

RE: S&S Carb Help! - 5/5/2008 9:49:14 AM

fiveola

Posts: 29
Joined: 10/3/2007
Status: offline

Thanks DeJavu, I'll give that at try. I'll let you know.

(in reply to DeJavu)

Post #: 5

RE: S&S Carb Help! - 5/5/2008 1:43:58 PM

Rodney

Posts: 686
Joined: 5/23/2007
From: Central Oregon
Status: offline

make real sure you lock those screws after position is correct.
Sure wouldn't want your engine eating them.

_____________________________

1968 FLH owned for 30 years
2002 FXSTDI

(in reply to fiveola)

Post #: 6

RE: S&S Carb Help! - 5/6/2008 7:53:26 PM

gitguy

Posts: 7
Joined: 3/18/2008
Status: offline

The throttle plate has an angled grind that allows it to be installed PROPERLY only in one position.
Check it carefully to ensure you have it properly installed. You will be able to tighten it in the incorrect position so look closely for the bevel.

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Post #: 7

RE: S&S Carb Help! - 5/6/2008 9:17:36 PM

fiveola

Posts: 29
Joined: 10/3/2007
Status: offline

Thanks for all your help and great advice. The butterfly is positioned correctly w/ the angles in the appropriate direction. The fix was to remove it and reposition it. It closes almost completely when the cable is adjusted.

(in reply to gitguy)

Post #: 8

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