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Fattening her up....GS1100G carb bumps...

  • Thread starter Thread starter TheCafeKid
  • Start date Start date
T

TheCafeKid

Guest
It occurs to me, after consulting with the hive, that I would like to fatten the 1100 up a lil bit, to get rid of that slight hesitation when givin her the whip. I have been told to shim the needle, and maybe bump the main...so in bumping the main, whats the suggestion? half size bump or a whole bump? Anyone? TIA!

TCK
 
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Try the needles first. You don't even have to take the carbs off to do it. Worked wonders on my bikes.
 
Nessism said:
Try the needles first. You don't even have to take the carbs off to do it. Worked wonders on my bikes.
Click to expand...
And in shimming the needle, it is removal of the plastic upper washer, and using a thinner washer in its place, yes?
 
TheCafeKid said:
And in shimming the needle, it is removal of the plastic upper washer, and using a thinner washer in its place, yes?
Click to expand...

That's it. Start with a washer stack equal to 1/2 the thickness of the stock plastic washer - typically two small washers. You can remove more washers as needed.:D
 
Something I learned today
The spacer is 2.5mm. Radio crap washers are .5mm. So 5 washers make the spacer. Start with 3 which is like raising the needle one notch.
There is a washer under the clip and one over the clip (I believe). Keep those in place. Just use the washers to replace the spacer and keep everything else the same.
 
Awesome! I have to go do Inventory at work in the AM, but its more or less a half day for me, so I will hit up the radio jack on the way home. You guys know what size (diameter or whatever) you used?
 
TheCafeKid said:
Awesome! I have to go do Inventory at work in the AM, but its more or less a half day for me, so I will hit up the radio jack on the way home. You guys know what size (diameter or whatever) you used?
Click to expand...
It's the small variety pack.

You do inventory on the first? I was up at 5am jetting my bike to make it to work by 8. Even got Fourth of July ordered (1000 people) and home by 12 with $20'000 in product.
Got home to do what??? Rejet.
 
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chef1366 said:
It's the small variety pack.

You do inventory on the first? I was up at 5am jetting my bike to make it to work by 8. Even got Fourth of July ordered (1000 people) and home by 12 with $20'000 in product.
Got home to do what??? Rejet.
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Yesah, Inventory before open on the first. We could do it on the night of the 31st after close, but when that falls on a Friday or Saturday, we dont get done closing untill 3am at times. Especially durring football season. We have ALOT of HS's round us, and they ALL come into our store after games.

how many of those variety packs will i need? Just one to do all four of the carbs?
 
TheCafeKid said:
Yesah, Inventory before open on the first. We could do it on the night of the 31st after close, but when that falls on a Friday or Saturday, we dont get done closing untill 3am at times. Especially durring football season. We have ALOT of HS's round us, and they ALL come into our store after games.

how many of those variety packs will i need? Just one to do all four of the carbs?
Click to expand...
One is more than enough. I've used many for jetting projects and had plenty for my BS needle adjustment. Took them out as soon as I got home.
 
chef1366 said:
One is more than enough. I've used many for jetting projects and had plenty for my BS needle adjustment. Took them out as soon as I got home.
Click to expand...
And i dont have to modify them to get them to fit at all? Sorry for all the questions, just like to go in prepared when messing with the carbs so i get it DONE and dont have extra down time.
 
TheCafeKid said:
Excellent! Now i just need to see if i have a pair of circlip pliars that will reach down there.... with my luck..
Click to expand...

Harbor Freight has some cheapo long needle nosed pliers. Cut a small notch on the ends with a dremmel. I have taken out hundreds of circlips from carbs with these and they cost like $3. I bought two.
 
if its not too much trouble

if its not too much trouble

tck, i'm having my carbs apart as we speak
i wondered about the needle assembly and the shimming - that you are about to do
it would be great if you could take a pic of what it looks like when you take the circlip out, and what needs to happen with those washers
 
psyguy said:
tck, i'm having my carbs apart as we speak
i wondered about the needle assembly and the shimming - that you are about to do
it would be great if you could take a pic of what it looks like when you take the circlip out, and what needs to happen with those washers
Click to expand...

It's very simple psyguy. Remove the circlip in the slide and pull out the needle assembly. The needle has a small circlip attached - US bike needles only have one groove in the needle, other countries have more than one groove so the needle can be raised by moving the circlip on the needle. For US bikes without adjustable needles, the needle height is controlled by the thickness of the plastic spacer/washer on top of the needle circlip because there is a spring pushing up on the needle. Remove that plastic washer and replace with something thinner - which raises the needle.

Made a world of difference on my 850. Bike only needs choke for a short time now and runs great. Took the bike into the mountains and no richness issues. Great mod for just about any GS since they are jetted so lean from stock.
 
TheCafeKid said:
Awesome! I have to go do Inventory at work in the AM, but its more or less a half day for me, so I will hit up the radio jack on the way home. You guys know what size (diameter or whatever) you used?
Click to expand...
Do you count the chicken wings by the pound or by the piece? LOL
 
I'm bookmarking this Post. Great thread. This is exactly what I want to do on my 650!!!
 
K...Needles are shimmed. By the way, RADIO SHACK SUCKS! I went there for the variety pack of washers Bill was talking about. Dude looked at me like i was from Mars. "Variety pack of washers? We dont have washers. Maybe you need a Home Depot or something" I then explained to him what it was i was looking for, how small they were. He says try Parts Express. SO i go there. No dice. Didnt even get passed the counter. So off to the local hardware store. Found what i thought would be the jackpot of lil washers. Got over to Steves, as he had circlip pliars that would work, and was going to give me a hand. The washers were JUST too big. So, he tried different methods of grinding them down. Finally got a enough ground down. They were thick enough that 3 would be the same size as the spacer. So we only put ONE washer in. Got them back in the bike, and the difference is night and day. Wonderful response in the midrange now! Instantly there. No more delay from my hand to the power. Love it. If you havent done this, DO IT!

On a side note, i had an interesting ride home....Writing another thread about that...I'll put a link up in a bit...
 
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