GS1100e carb help (1982) (Dynojet kit)

[TheCafeKid]

Here's one more bit of mystery information: the number 2 and 3 cylinders seem to be burning a lot hotter than the outer jugs 1 and 4, tested by touching the exhaust pipes. This made me think the ignition system could be the culprit. To test this, I first checked spark, and then swapped the plug wires so the 1-4 coil was now on 2-3, and vice versa, plus swapped the firing lines from the igniter to the coils. Same result, 2-3 hotter and 1-4 cooler. In fact, the pipes on the outers can be touched after 30 seconds of idling, but the inner pipes would burn you without a rag.

You sound like you have some experience, but I'll ask anyway:
Did you fully disassemble the carbs and dip, install new Orings etc?
With cool pipes after 30 seconds it sounds like you may still have some garbage in the idle circuit.

Barring that, this is what *I* found to be the best DJ set up for my 83 1100ES..

DJstage 3 kit
Stock pilots
Mains : DJ138
Needle clip: 3.5 from the bottom (add another washer to get the half clip size)
160 air jets (popped on decel with 170s)
Screws generally around 2.5 turns out but tuning them for highest idle would be best. Remember to adjust small and slow and listen carefully. Give the motor a few seconds to catch up to your adjustment.

Also assure you're slide diaphragms don't have any pin holes or tears. This will cause problems obviously.
The hole drilled in the slide shouldn't be much bigger than stock. The kit came with two bits..one of which was indicated for use in removing the mix screw plugs. Unfortunately some people don't read instructions thoroughly and often used the much larger bit to drill the slide holes with. They *should* be about an eighth inch or so... Can't remember the bit size off the top of my head. The OTHER bit was more like a 1/4 inch IIRC so if that's the issue, you can epoxy the holes shut, or JBweld, and re drill them.

A valve clearance adjustment would probably be a very good idea as well. Easy to do (no shims on your bike, tappet adjusters) as this could also be part of the problem, or at least lend more issues to the problem.

Btw yea my set up was for pod filters, yosh race pipe and either stock or 36mm carbs (from an 1150... Great mod to wake that motor up even more)
Good luck!

TCK

 

[AJ]

You sound like you have some experience, but I'll ask anyway:
Did you fully disassemble the carbs and dip, install new Orings etc?
With cool pipes after 30 seconds it sounds like you may still have some garbage in the idle circuit.

Barring that, this is what *I* found to be the best DJ set up for my 83 1100ES..

DJstage 3 kit
Stock pilots
Mains : DJ138
Needle clip: 3.5 from the bottom (add another washer to get the half clip size)
160 air jets (popped on decel with 170s)
Screws generally around 2.5 turns out but tuning them for highest idle would be best. Remember to adjust small and slow and listen carefully. Give the motor a few seconds to catch up to your adjustment.

Also assure you're slide diaphragms don't have any pin holes or tears. This will cause problems obviously.
The hole drilled in the slide shouldn't be much bigger than stock. The kit came with two bits..one of which was indicated for use in removing the mix screw plugs. Unfortunately some people don't read instructions thoroughly and often used the much larger bit to drill the slide holes with. They *should* be about an eighth inch or so... Can't remember the bit size off the top of my head. The OTHER bit was more like a 1/4 inch IIRC so if that's the issue, you can epoxy the holes shut, or JBweld, and re drill them.

A valve clearance adjustment would probably be a very good idea as well. Easy to do (no shims on your bike, tappet adjusters) as this could also be part of the problem, or at least lend more issues to the problem.

Btw yea my set up was for pod filters, yosh race pipe and either stock or 36mm carbs (from an 1150... Great mod to wake that motor up even more)
Good luck!

TCK

This is extremely helpful. Would really appreciate it if you could read off the drill size from your kit or mic the bit if it's not marked. I'm pretty sure the slides are drilled, but they're definitely not 1/4" holes. (Wow! Who could f-up that badly?! LOL!).

I'll double check the jet sizes at home, but my current setup sounds the same as yours except for the "half-notch" on the needles.

I did not do a full tear down and dip, nor were the o-rings replaced. The carbs were pretty clean and the rubber was generally quite good. Ok, I'm lazy, but I also have been doing this for 30 some years (pat on back :-\\\). Yeah, I should have, and now I'm thinking I'll go ahead and do it.

Valve adjustment is a great idea and you're right, this engine is a piece of cake compared to the shim-over-buckets of the earlier motors.

Hope to get on this over the weekend. Will report back soon. Thanks for your good ideas.

 

[AJ]

Just broke down and bought the O-ring kit from cycleorings.com. I probably have all the larger ones, but definitely not the ones for the mixture screws.

 

[AJ]

Just want to thank folks for their help with this issue. My son and I went through the carbs Sunday. Two pilots were partially clogged, even though I drilled all four of them. Re-drilled with #78 pin drill. Pulled the bank apart and replaced all o-rings, although they weren't too bad and I don't think that had anything to do with the problems. Raised the needles one notch for grins.

Now she revs up nicely, but is loud as can be with a Kerker and no packing in the baffle. Stove rope on order.

Can't really say how well she runs, because the tires are pretty dry rotted (new set ordered today), but I did go around the block, keeping the revs low so that exhaust wouldn't shatter my neighbors' windows. Seems ok for now. More testing when the tires are mounted and the exhaust is muffled.

Thanks again.