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4 into 1 & pods; runs poorly, Help plz

  • Thread starter Thread starter MUBULLDOG
  • Start date Start date
M

MUBULLDOG

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I bought a 80 GS850G w/29k miles. Not a rust bucket, just had some clutch problems. The previous owner had installed a 4 into 1 exhaust and put cheap (ebay) pods on it. He also screwed up the clucth, which turned out to be 2 fiber plates stuck together. I installed new fibers and steel plates. All fluids have been drained; primary drive, secondary and final plus the old brake fluid. I also only run 93 octane. That said, here's my issue. With the pods on, the bike shifts and runs good until I hit 55mph. Then it really has no more power. I take the pods off and it will run 65 - 70 and then it starts to feel like I don't have more power. I do have the original air box, haven't tried it yet to see what happens. Where do I start? I don't he did anything with the carburation when he put the aftermaket exhaust and pods on.
 
MUBULLDOG said:
I don't he did anything with the carburation when he put the aftermaket exhaust and pods on.
Click to expand...

There are a lot of threads addressing both aftermarket exhaust and pods, and most of them recomend re-jetting. If you do not plan to restore the bike, that is where i would start.

Toad
 
Put the stock airbox on as well as stock exhaust (if you have it). If not, just put the stock airbox on for starters and get a baseline to tune from there.
 
Have the carbs been cleaned? If not it will be a good way to see if a kit was installed. It doesn't sound like a jet kit was done judging by the way it runs. You do need to clean the carbs regardless if you haven't. Sounds like it sat a little.
 
All of the above, and you probably don't need the 93 octane fuel.

If you really want to run the cheap pods and the pipe, you WILL have to re-jet the carbs. There is no option to that, you WILL have to re-jet.

Suggestions for re-jetting sizes will vary based on what pipe and what pods, but you will need to go up several sizes on the mains (likely 5 or 6), and most likely lift the needles about one notch worth, but, since there are no notches, you will have to use a thinner spacer on top of the clip.

The 850 is no rocket, but it's a great-running bike. Look in my sig, you will see that I have three of them (click on the links, you can see them). It has a wonderful engine that will pull decently strong from 1500 RPM on up, and when you cross 6000, you had better be hanging on, it will feel like someone just stuffed a bigger engine in there. :eek:

All three of the 850s in my family have stock airboxes, two of them are still with stock pipes. The one with a header does not seem to make any more power, it just sounds nicer. :D

OH, I just noticed, you are yet another rider in southwest oHIo. :dancing:

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And get rid of those cheap filters. If you are going to run pods spend the money on good ones. I went down this road with my 850G. Finally added K&N pods to my Dyno-Jet stage 3 kit and it runs great.
 
stain said:
And get rid of those cheap filters. If you are going to run pods spend the money on good ones. I went down this road with my 850G. Finally added K&N pods to my Dyno-Jet stage 3 kit and it runs great.
Click to expand...

Ditto.

K&N Pods and V&H 4 into 1 on my 82 850GL. Ran like junk past 55. Long story short. (You can read the LOOONG story in my sig.) I did a proper carb clean and rebuild with a Dyno Jet Stage 3 kit.

It now runs like a "scalded bandit" all the way through the power band. And Steve is right. After 6000, hang on!
 
Just to summarize:
Stock intake and exhaust - clean carbs and go
Pipe and stock intake - larger mains, tune and go
Pods and stock exhaust - Stage I jet kit, tune and go
Pods and pipe - Stage III jet, tune and go

By pods, I mean at least the APE pods, K&N for the win. The cheapies, such as EMGO, almost impossible to tune except for the most patient of folk.

I run the last, K&Ns, Kerker & Stage III kit. Runs great, still has more power on tap when I have the patience to finish tuning. Which is the other part of the puzzle; if you choose this route do not expect to just bolt on parts and haul. It takes a lot of time and patience to do it correctly. Otherwise you get a bike that falls flat on its face, as you are aware.
 
Many thanks to all the GS family members that posted the great advise. The original box w/covers looks a better than the pods. So that's the direction I'm going with. Thanks again.
 
Hey Steve, I'm a little north of Dayton. I'm going to go with the org airbox w/cover (looks better to me) and the suggestion that the Koolaid Kid posted; (4 into 1) Pipe and stock intake - larger mains, tune and go.
 
MUBULLDOG said:
Hey Steve, I'm a little north of Dayton.
Click to expand...
I know exactly where W. Milton is. I used to live in Phillipsburg for about 12 years. Down closer to the Dayton Mall now.



MUBULLDOG said:
I'm going to go with the org airbox w/cover (looks better to me) and the suggestion that the Koolaid Kid posted; (4 into 1) Pipe and stock intake - larger mains, tune and go.
Click to expand...
If you want to see what that looks like, click on the link in my sig for #2 son's 850. :D

.
 
Hey Steve, since you have rejetted your 850 (with the stock airbox) dur you remember what size you went up? Thanks
 
Hi Steve, I order 2 sets (120 & 122.5) of mains from Z1. They should be in later this week. Just to ask what you meant by "you will most likely lift the needles about one notch worth, but, since there are no notches, you will have to use a thinner spacer on top of the clip". Did you son need to do this with his 850? I'm staying with the stock airbox, getting those pods off. Oh yea, I ran the bike about 10 miles, with the stock box, and it didn't feel like I had any power passed 55mph. Thanks again for the great advise.
 
When i went to Wirlessguy's house,what a day that was,we sanded his plastic spacer on top using a caliper to measure,but ithout the dynojet needles just did not run completely right,FWIW
 
If u bought the dynojet kit and left pods and took the time to learn to tune,you would be a carb PRO ,and be very happy.And could tune any carb like yours.Just my 1 cent
 
Hi 5150, I do apprecate your suggestion, and I would probally go with pods & Stage 3 kit if I were to do a cafe/bobber on the 850. These were cheap pods that the previous owner put on with the 4 into 1 but didn't rejet. I think the bike looks better with the org airbox and chrome covers. Thanks again
 
Ok carbs are off, cause my 122.5 mains came in. Well this is weird. The mains on the carbs are stamped 92.5. Now I'm confused. Anybody have a thought about the 92.5 mains?
 
Ok the 122.5 mains are on and did pilot jet tune. Idles around 1300 to 1400 rpms. When on the center stand (tank was off and set on prime) I could rev it up & hold at 6K (very smooth) and then settles back below 1500. Took it out for a spin and everything sounded good with good power all the way to 50mph. Then it started the "garble" sound and I could give it more throttle but it didn't help, just made it "garble" more. Below is the list of things I know;
1. With pods and 4 into 1 pipes & the 92.5 mains; runs up to 55-60 mph and starts the "grable" sound with no more power.
2. Pods OFF and 4 into 1 & 95.5 mains: runs up to 65-70 and starts to garble and no more power.
3. Stock airbox and 4 into 1 pipes & the 92.5 mains; runs up to 55-60 mph and starts the "grable" sound with no more power
4. Stock airbox and 4 into 1 pipes & the 122.5 mains; runs up to 50 mph and starts the "grable" sound with no more power.

So, where to go from here?
 
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