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Carb sizes

  • Thread starter Thread starter double d
  • Start date Start date
D

double d

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I have been having carb trouble but thats all sorted now, I was however given a set of carbs that I was told were off an GSX1100, so I was going to put them on my 750 Katana (83) but when I measured them up they were both 32mm (taken from the engine side of the throte) so does my 750 already have 1100 carbs on it or was I given a 750 set?
Whats std for a GSX1100 and a GSX750?
 
For the GS series remember their are exceptions
GS750 32 maybe 34mm
GS850 32mm
GS1000/1100 2v 34mm
GS 1100/1150 4v may have 34 or 36mm
 
cheers for that, but must remember that over here the 2 valve engines were the GS and all 4 valve engines were called GSX, which is what I'm refering to, the GSX's had diaframe carbs not round slides like the GS series.
 
How are you guys measuring the diameters?

Are they measured internally? ie bore ID.
Or are you measuring the OD?
 
The diameter of a carb is measured as the inside of the throat leading into the cylinder. The airbox side tends to be a bit larger.


.
 
Gs850 '79

Gs850 '79

I measured my carb throats, and they are 26mm, they are also VM series carbs..
 
My 82 GS(X)1100EZ 16v has 34mm CV carbs. My 81 GS(X) 750 16v had 32mm CV carbs. Both sets of carbs had the round slides with vacuum diaphrams in the tops of the carbs.
 
Cassius086 said:
My 82 GS(X)1100EZ 16v has 34mm CV carbs. My 81 GS(X) 750 16v had 32mm CV carbs. Both sets of carbs had the round slides with vacuum diaphrams in the tops of the carbs.
Click to expand...
Good ****, so I was given a set of 750 carbs and told they were 1100's never mind not a biggie.
 
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