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1977 gl1000, 1987gl1200
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23 Posts
Discussion Starter #1
I am rebuilding the carburetors on a 1987 1200 Interstate. I'm confused on the jet size. All the rebuild kits come with a .35 small jet and a 102 for the large. The ones coming out are 40 and 105. Being told that jet sizes differ in different elevations. I live in northeast US. Is it that critical. Is it going to affect performance. Any info would be appreciated
 

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25,037 Posts
Use the original jets. They don't wear out and you can't depend on the aftermarket jets being the size they are marked.
 

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Registered
1977 gl1000, 1987gl1200
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23 Posts
Discussion Starter #3
The carbs were bad with gas residue. The large jets clean ok but on the small ones, can't get a piece of wire thru. Is this normal as all 4 seem to be blocked at same spot
 

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The hole in the slow jet is very small. I use a single wire pulled from a wire brush.
 

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Registered
1977 gl1000, 1987gl1200
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23 Posts
Discussion Starter #5
Got them clear. Just took patience, a smaller wire, and a little help from this great forum. Going to use original jets as you suggested. I was very skeptical about the aftermarket ones being different size. Thank you.
 
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