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81 550 carb rebuild

  • Thread starter Thread starter ratchetneck1
  • Start date Start date
Nerobro said:
putting the carbs back on a GS550 is the seccond worst task in motorcycling. Number one being getting to the carbs on a VFR :-) Pods make life so much nicer.
Click to expand...

Yeah, I know your pain about VFR, I once owned a VF750F and that was also tough!
 
Tervo i did put my hand inside the airbox to aid in boot removal, it wasnt a pleasant feeling!
 
i dug this up from what i posted a couple years back


as promised all the info i have on getting as much power from the gs550 as you can...

http://www.macperformance.com/ give them a call directly and they can swap stock baffles for competition baffles (1.5?) at no extra cost. You can check out the pics at http://www.macprod.orc.ca/


A Jet kit from http://www.dynojet.com/jetkits/index.aspxhttp://dynamic.dynojet.com/cfml/Jetkits/suzukijets.cfm for a SUZ 82 GS550 KATANA part number 3314 will fit your bike if you have the bs32cv carbs on your bike
You could also call k and n and see if they have any extra jet kits for the above mentioned bike available for sale since they are currently having a clearance sale on jet kits. This is the current kit I have on my bike and it works fine.

You will also need to order k and n filters part number rc-2382 I found http://www.martelbros.com/cgi-bin/st...ore=direct.KNN has the best price and shipping is free, you just need to order one set or 1 box I mean since 2 filters come per box and each filter goes on 2 carbs.

o-rings for carbs http://home.att.net/~robert.barr/#Outside%20of%20the

accel super coil kit part number 140403 NON-CDI http://www.accwhse.com/accell.htm#Coils good price - includes spark plug wires too.

----------------------------------------------------------------------
i think most of the links are still good, from my experience with my 550 w/ coils, dyno jet stg 3 , mac 4 into 1 with 1.5" comp baffel every think will work together to help each other.

when doing the jet kit use the 150 mains, and keep the needles at the 3rd step maybe or one up or down i can't rember, and i think set the fuel mix screws at what ever the kit tells you. (2.5??) are you running the real k and n filters or the cheap knock offs? because i tried the cheapo stuff at first and they would not flow enough air. so i had to order the pods meant for the bike.

keep in mind for what ever reason the 550 with a jet kit is real sensative to air flow, and i will notice a bad transistion from needle to main around 7k WOT if my air filters have not been cleaned in 3000 miles.

Also just for the record when you do, do this converstion your bike will hate the rain and if you get caught in rain you will have to get out of it before it really pours or pull over and cover your filters with plastic and wait for any medium to heavy rain rains it's self out. water will run right off the tank, your legs and crotch and dumps onto the filters which then chokes them for air which then kills the bike and will barely run at all till they dry out.

other then that the 550 is great fun bike and will keep up with most stuff if riden right, the power doesn't really come on till about 7500 k, i have put about 12,000 miles on my bike so far with these mods and have had no other problem besides what i mentioned.

-ryan

p.s click the 550 link to see what it looked like a couple years back, i need to update my pics now that i added a bar ends and a fork brace.
 
Whoa thats some good info.Also great looking bike.Will the K&L rebuild kits from Dennis Kirk have all the orings i need or do i have to get more (fuel feed tubes and breather tee) from cycleorings.I want to replace them all while i have carbs out.I already have the ones (4) that go on the intake ports @ the head.
 
accel super coil kit part number 140403 NON-CDI the rebuild kits should come with al the o-rings you need but for another 14 buck or so it wouldn't be a bad idea to have some extras especially since you are pretty deep in the hole already.

-ryan
 
you will just have to get a pair and see. or you can keep runnin 20 year old electronics. it's one of those things, where it can't hurt and the new stuff has higher toleraces which mean cleaner and better sparks, if you want i can give you the old tired coils off my 1k, they should be fine right.....

-ryan
 
Well, I've been looking for a set to try it out. There are certian things you can't change about coils. The resistance across the coil, which determines spark energy can't be changed. If you do, you fry your ignitor. Or you fry your coils.

If you change the number of seccondary turns, you get a higher or lower voltage... But higher or lower amperage in turn.

Like I said, I"m willing to try new coils.... but I don't expect a change. If there is spark, there's spark.
 
The Dyna and Accels coils put out approx' 35,000 volts. The stock coils put out approx' 10,000 volts. The hotter spark improves combustion. Better combustion equals max power.
 
The only way to increse voltage is to put more turns on the seccondary, which means lighter wire. :-/ It also means a spark with less amperage. *runs off to do some research on the subject* Like the stator advice.. this just doesn't make sence.
 
Nerobro said:
The only way to increse voltage is to put more turns on the seccondary, which means lighter wire. :-/ It also means a spark with less amperage. *runs off to do some research on the subject* Like the stator advice.. this just doesn't make sence.
Click to expand...
A sparkplug spark depends more on voltage, less on amperage. It's good voltage that's the first step to good spark. The higher the voltage, the better able it is to jump the gap and get to ground, creating the spark. Along with the higher voltage "pushing" electrons through the cable, the amperage will also increase as long as the resistance remains the same. So with the higher voltage and amperage, the spark and combustion improve.
Just basic Ohm's Law. If the voltage rises and the resistance remains the same, the amperage will also rise through the cable.
 
Nice GS 550

Nice GS 550

First Timer,

My first post here on GSResource.

Nice GS. I've had my '81 GS 550 L since summer of '84.

What kind of bars are those in your pic 'w/mods'?

I'm thinking about making K/N upgrade, but the bars and the grips might be first.

Thanks in advance.

Kapkirk
 
those are drag bars but i would recomend against them they are rough on the back, go with super bike bars, and do a search for 550 mods there has been a lot posted already

-ryan
 
Superbike bars:

FirstFitting1.JPG
 
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