Is This Right? Carb Question

[Colorado CJ]

I have a brand new slide in a box, P/N 13500-47070, and it measures 55.68mm. This part number is called out for the '80 GS550L. Not sure what's going on with your carbs.

Thanks, if that is the case, it looks like I have 3 undersized slides and 2 (with the new one) right sized ones.

XenoMorph said he had 2 left, I emailed him on what size the remaining two were. If they are the right size, I'll try to buy them. I'll then have 4 slides that are the same. Sure wish it was the other way around, this might get expensive!

[Nessism]

What controls how far down the slide sits into the bore? It must bottom down against something since the spring pushes down.

[Colorado CJ]

I'm pretty sure that it bottoms out when the metal ring (right under the diaphragm) hits the top of the carb. bore.

I thought about just making a spacer that slides over the slide and fits against that metal ring, but I don't know what that will do to the #3 cylinder under full power (don't know if it will allow full movement of the slide).

The depth of the hole in the top of the slide is also different between my slides. The longer (correct) slide has a deeper hole compared to the other slides.

I may try making a spacer, but I really don't know if that will help. I'd rather get the right slides so that I know that everything is in spec. Just one less thing to troubleshoot when sorting out the system.

[Guest]

It should bottom out in the main jet.

[Colorado CJ]

Well I went ahead and installed the two longer (OEM) slides in #1 and #4 carbs and installed the shorter ones in #3 and #2. The idle can now be adjusted to around 1200-1300.

I also bought the other two slides that XenoMorph had as they were the OEM longer slides, so I'll have all four the right size soon. I'm going to ride it the way I have it until the new slides arrive. It does drive fine and idles better (just took it for a short 20 mile trip).