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BS (CV) Main Jet Size

Did you check the STICKY at the top about factory carb setting stuff???
 
Last edited:
Hi Chuck, Sorry if I didn't phrase my question properly. I did read the chart which states the main jet is #112.5. The Mikuni #112.5 main jet is available in a " small " main jet as well as a " large " main jet. The chart does not specify which one is correct.

I did find a listing on eBay that stated the " small " main jet was the correct one, which is what I ordered.

Just thought I would ask since I will not be opening up the carbs until next weekend and have time to order the others if the smalls are incorrect.
 
My 83 550e has 2 different size main jets. The 2 center cylinders have 102.5 mains and the outer 2 cylinders have 95 mains. My 550 is a 16 valve TSCC motor with the Siamese carbs. Not sure if the 1100is the same configuration.

Hope this helps,
Don
 
don said:
My 83 550e has 2 different size main jets. The 2 center cylinders have 102.5 mains and the outer 2 cylinders have 95 mains. My 550 is a 16 valve TSCC motor with the Siamese carbs. Not sure if the 1100is the same configuration.

Hope this helps,
Don
Click to expand...

Thanks Don...I don't know a ting about your carb setup. However, the 4 mains on the BS carbs are the same.
 
Hes talking about the physical size of the jets here. Minkuni makes a "large" type and a "small" type. My BS34's use large type jets. I had to learn this the hard way when like you, I ordered small type jets off ebay.
 
Yep, the BS34SS carbs on a GS1100 use the large head main jets. Should have asked before you ordered.
 
Kiwi Canuck said:
Rich, why don't you order from Suzuki, Parts Outlaw $5.92 each (was that a set of 4 or $12 each?)

http://www.partsoutlaw.com/oemparts/a/suz/50d4040df8700230d8b4ec56/carburetor-model-d
Click to expand...

David,

Yes, that was for a set of 4. I had already placed an order with my supplier for a bunch of parts, realized I didn't order the mains and thought I would just make a quick transaction on eBay!

I had a 50/50 shot of getting it right. I was told that the performance is the same and the smalls will work just fine. A little research showed that the only difference is the width of the head. The length of both the threads and the head are identical.

With that said, I am not in a rush so I will order the large mains (already ordered) and consider that I now have 4 good reasons to search for another bike!
 
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