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1979 gs1000

  • Thread starter Thread starter Meweeble
  • Start date Start date
Update

Update

Getting closer.. just finished relay mod this weekend. Used a 5 pin and included the Dyna s pickups just to make sure. Voltages are perfect. I still need to adjust the carbs better, took it for a little spin around the block and from 4 to 6k rpm runs great, crappy throttle response and reduced power at low rpm, the same for rpms highr than 6k.
I've included a couple of pics of how I mounted the dyna coils, they didn't fit in the stock coil locations due to the plug wires exiting the bottom, so I made a couple of brackets. Pretty self explanatory. I also mounted the relay to the inside back of the electrics panel.
Thanks for the help everyone... I'll let yon know if I can get this thing running well.
 
Update

Update

Here is what I`ve been working on... my first GS. And the previous owner told me that it has a big bore kit....
 
From the looks of it, the bike was set up incredibly lean

What is your

Main jet size?
Pilot jet size?
Fuel screw setting?
Air screw setting?
 
Big T said:
From the looks of it, the bike was set up incredibly lean

What is your

Main jet size?
Pilot jet size?
Fuel screw setting?
Air screw setting?
Click to expand...

I think you are right it is lean. The exhaust pipes are turning coppery/blue color (you can even see it in the pic from my earlier post) and rpm is slowish to return to idle when the throttle is blipped.

Stage 3 kit...
Mains= 142
Pilot Jet=? stock from the K&L kit
Fuel Screw= 1.5
Air screw= 2.5
Needles are set to groove 2 as per instructions

Where should I start? It does have a 1085 kit in it too.

Thanks,

Kevin
 
Last edited:
OldVet66 said:
Relay mod is nice, but it is just a work around for good clean connections. check all of your connectors. The ones under the seat coming from the stator like to discolor and burn. Discoloration is caused by heat. If you see any black, it's been hot enough to burn the connector sleeves. If you go through all the connectors replacing the bad ones, cleaning the others and coating the connection with dielectric grease before putting them back together you will have sufficient voltage for the coils.
Click to expand...

Ya thats a good point.. I did the relay mod first then I went through and checked all my connections (after the battery died) a few of the banana (male female) connectors were so corroded they were white oxide. Cleaned them and and the other rr ones .... guess what.... my bike charges now too. Go figure.

Kevin
 
Have you vacuum synch'd the carbs yet? It sounds like you are still fixated on an electrical issue that may not be real. From the things you have listed here your problem in related to the mixture not electrical.

Chris
 
resjudicata said:
Have you vacuum synch'd the carbs yet? It sounds like you are still fixated on an electrical issue that may not be real. From the things you have listed here your problem in related to the mixture not electrical.

Chris
Click to expand...


Hi Chris,

I'm over the electrical issue... I'm all better now. I provided my carb specs (up a post or 2) that I have right now and I'm comfortable that it is running real lean. A buddy is bringing over a carb synch thingy so we'll get that out of the way.... just waiting to see what Big T suggests.
Thanks.
 
Once you get the synch done you will likely get the jetting dialed in much easier. Without the synch all the carbs are getting different airflow which effects jetting. Can't really figure out the jetting until they are all synch'd properly.

Good luck.

Chris
 
Sounds like you are making progress. I didn't know about the big bore kit and have no idea as to how that affects the fuel screw settings.
 
Update

Update

OK did the carb sync this weekend. I also raised the needle 2 settings and the bike is running way better. I am having an issue at low rpm now, just starting off. It runs a little rough and has no power until 2-3k rpm. After that it's great. Question, does my fuel mixture screw (the one on the bottom) affect low rpm? It's set to 2 turns now with the stage 3 kit.
This is where I am at now.

Stage 3 kit...
Pods
4 into 1
Mains= 142
Pilot Jet=? stock from the K&L kit
Air Screw (the one on top) = 1.5
Fuel screw (on bottom) = 2
Needles are set to groove 4 (after trying 2 and 3)

Thanks, Kevin
 
Last edited:
Yes..The bottom one effect from idle to roughly 1/4 throttle open.. And are you sure the little hole in the pick up tubes are all clear??? Pick up tubes are the little fixed tubes sticking down into the bowls.
 
Last edited:
chuck hahn said:
Yes..The bottom one effect from idle to roughly 1/4 throttle open.. And are you sure the little hole in the pick up tubes are all clear??? Pick up tubes are the little fixed tubes sticking down into the bowls.
Click to expand...

The only one is the choke tubes and they are clear. The bleeder pilot jets are new, so they should be OK and the starter jets were clear. I could have got some crap in them from the first run?
 
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