80 GS1100E stock jetting

[wink1]

80 1100 Jetting

Got a chance to check out the carbs,107.5 mains 45 pilots.I started with 115 mains 47.5 pilots.Bike idles fine,took it out on highway ran decent for a minute then fell on it's face,rough acceleration,etc.When installing jets,noticed #2 slide set higher than other three,removed cap,and diaphragm had pulled out of the seat,just wondering if it happened again,didn't have chance to check it out,had to leave town for work.Will give it a look when I get home this weekend,plus my other jets should be in by then.
The Kerker header I have does have a competion baffle in it so will that also influence jetting reccomendations?

[Katarat]

Hold up on the slide while you put the cap on and the diaphragm will stay in place better. Sounds like you need to synch the carbs too

[Nessism]

I have an old magazine article from back in the day and they found 122.5 mains about right with a header and stock airbox with the lid removed.

[wink1]

Gs1100 jetting

Well I just happen to have some 122.5's in the old jet collection,I'll give them a whirl when I get home Thursday night see what happens.Can I get by with the stock needle setting or will I have to shim it,too?

[Katarat]

It depends on the altitude where you live too, Im at 3700 ft, I believe they were testing in California

[wink1]

Gs1100 jetting

Went with the 122.5 mains,47.5 pilots,airbox lid off, changed the bad slide,the bike pulls hard to redline from 1st thru 3rd,soon as I hit 4th and 5th it bogs.Still have some backfiring but not as bad as at first,still hear a few pops at idle too.

[wink1]

gs1100e jetting issue

Been awhile since I've been on.
I got the carbs ultrasonic cleaned,new o-rings everywhere,float heights adj. It really helped alot! running 122.5 mains 47.5 pilots,mixture screw out 2.5 turns,airbox lid off,kerker 4/1,with competion baffle.
Bike runs pretty good,has good idle,acclerates well,when running 60-70 mph it wants to float alittle,and at initial startup it does alot of popping,this seems to decrease once the engine warms alittle but it still seems excessive.
I know these old bikes will pop some with the 4/1 on them,but it still seems excessive.

[Katarat]

Try backing out the idle mixture screws a little more. Also make sure the header gasket copper o-rings are good. They will laways pop a little with the comp baffle in the pipe

[wink1]

1100 jetting

Exhaust gaskets are new,replaced them when i put the pipe on.As for alittle more on mixture screws,are talking maybe a half turn,or more than that?
I pulled the plugs earlier today,found that #4 had a cracked insulator,1&3 are nice cocoa brown,#2 was black with carbon,#4 looked about like 1&3.But these plugs were also in before the ultrasonic too.Just picked up new plugs and gona start fresh to see what gives.

[niclpnut]

Try the new plugs first. See where you are at with a plug chop. Then adjust the screws. If popping try a 1/4 turn out. Some times that's all it takes.

[Katarat]

Just have to experiment untill you get it right. Every set of carbs is different. If its more then 4 turns out go up 1 on the pilot jet size