Using 850 carbs on a 1000

[Guest]

Hello knowledgeable people!

I am thinking of putting a 1000g engine in my 850g. Found one one ebay with no carbs.

Can my 850 carbs be made to work (satisfactorily) on the 1000?

I have scoured the website on this subject, but can't come up with a definitive answer.

Many thanks to BassCliff's website for the carb spec info. Other than the 1000 carbs being 34mm, they don't seem too different.

Is is the spacing the same? Am I barking up the wrong tree?

Any help or thoughts you can give is greatly appreciated!

[Steve]

As you suspect, because of the difference in diameter, the spacing is slightly different.

I have examples of both carbs here, so can get a picture for you this evening, if you wish, but am headed off to work right now.

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[JTGS850GL]

The spacing is tighter on the 850 carbs but they can be forced on. The intake diameter is 2mm smaller so the boots will be a bit distorted when clamping them down. Jetting will be a bit of a ???? as well. If it were me, I would sell the 850 carbs and pick up a good set of BS34SS carbs from an 8 valve 1000 or 1100.

[Talkinboutshaft]

Thanks, guys!

And Steve, yes, a picture of both carb sets together, nose-to-nose, will give me the spacing info I need. I appreciate your time. This site is the best!

[Steve]

I will dig out both sets this evening (if I remember ).

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[Steve]

OK, sorry about the delay, but I have bad news.

The rack of 34s that I thought I have has been broken down and some of the parts sold, so I can't get a decent picture of spacing on the rack.

I did get some measurements on the rack of 32s, though. The outer carbs are real close to 75mm, center to center, the inner carbs are real close to 90mm, center to center.

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[Talkinboutshaft]

Thanks for doing that, Steve. I will look for some original 34mm carbs. Any suggestions? I fear I'm getting in too deep buying a motor that's not in a parts bike. Cheers to you and the site!