Carb intake size.

[Ruarymac]

Hi All,

I have been having huge trouble trying to get the air box of my 1980 GS1000G to fit on to the carbs. I looked at the boots and apart from one of them being rock hard, they simply don't look big enough to fit the in take port. I recently bought a second GS1000G (believed to be 1979 model with old carbs) and thought i would check the boots on that to see if they were in better condition. The two sets were the same part number and the same as that in the parts manual. Again they also seem to be too small to fit the my carbs. I measured the outer diameter of the old carbs on the second bike at approximately 49mm. The measurement of my carbs is 55mm and therefore somewhat bigger. I have searched the forum but did not find any info that helps me.

My question is this; Is there a larger boot to suit larger carbs? Another question therefore is; Are my carbs the correct ones for the bike and how can i tell? Perhaps the ones i have are from a GS1100 if they are bigger or some other bike. Anything that anyone can give to help me on this would be very much appreciated. Perhaps new boots stretch enough to fit.

Regards
Ruarymac

[hampshirehog]

The 79 boots are a lot smaller than the 80 boots for your bike. If the rubbers have gone hard they've probably shrunk as well. You're in luck though - for your carbs you can buy the new boots (can't for the older ones). They slide on (very) easily.