DJ Stage 3 Jet Kit on GS850G - Removal of "float bowl vent tubes"???

[Darin Jordan]

Just an aside....

While I was tinkering around last night, I decided to see if I could make something work. On our racecars, helping to direct airflow into the carb, especially on my Weber carbs (48 IDA, etc.) was always important.

I figured that, since the Suzuki engineers spend the time to develop the very nice air inlets boots that are on the factory airbox, and since I have a brand new set of them, and the clamps here, why not see if they'd work inside the K&Ns? Might help to reduce the air turbulance and straighten out the airflow where it enters the carbs...

Well... They fit right in! Haven't tried riding it with these, and I'm sure they won't FIX my issue, so I can't vouch for how they'll work, but... based on past experience with other applications, perhaps it'll help... Will let you know at some point.

 

[Darin Jordan]

Quick Question: I've scoured through all the the carb rebuilding tutorials, and don't see this addressed...

In the attached picture, I've circled an aluminum plug that plugs a passage between the float bowl (flange area) and the carb outlet.

In the tutorials on how to rebuild the carb, this plug appears to be left in place thought the rebuild process, an indication to me that it is fixed in place (press fit, glued, ???), or otherwise not removable, or not removed during rebuild?

Is this the case?

If so, on MINE, they were removed (they tapped right out) and cleaned up and put back into place, able to slide freely in their hole, with the rubber flat-sided o-ring placed between the plug and the float-bowl gasket, as it was originally assembled.

If this plug was suppose to be SEALED in place, then THIS could be part of the issue, wouldn't it?? Would be causing issues in the float bowl, as well as letting in additional air??

Figured, since I was trying to cover all my bases, I'd ask.

 

[Guest]

I've never seen or heard of that part being moved or removed.
I dint even know it was removable.
I'm stumped. Hopefully someone with more experience than me will chime in.
Betcha it's something simple.

 

[Skateguy50]

I have read on other carb rebuild threads that part can be removed and it is held back in place using clear nail polish I believe. (around the edges not smeared over the top)

 

[Guest]

I've had them fall out before during a cleaning. I just put them back in place and put the oring over them and reassembled the carbs never had a problem .

 

[Darin Jordan]

More checking results, and questions

Visually checked the fuel levels with a clear tube and they are right on.

Pulled the carbs back off tonight and removed the float bowls to re-verify everything. Rechecked float height, inspected all the jets, etc. Sealed the little aluminum plugs I mentioned before, reinspected the needle/seats... Everything looks good.

Two questions, however.

Looking at the "GS Resources Caburetor Clean & Repair Pictorial", and comparing the carbs in the picture to mine, I noticed something that looks curious.

On the float-bowl mounting flange, on the carb body, there is a small hole that the gasket goes around, but the float bowl doesn't cover it. The hole is essentially open and uncovered when the carbs are assembled. See the attached picture... the red-circled area.

In the Pictorial, on the example carbs, there doesn't appear to be a hole in this location, or it's covered./plugged.

Is this hole suppose to be uncovered?? Is it possible these carbs have incorrect float bowls??

Second, I mentioned before that the "Main Air Jets", the larger jets on the left side of the air-filter side of the carb, are 180's. If I'm reading the specifications correctly, these are suppose to be 1.7's?? What should the jet read if it's a stock jet as far as the number goes?

 

[Darin Jordan]

Second, I mentioned before that the "Main Air Jets", the larger jets on the left side of the air-filter side of the carb, are 180's. If I'm reading the specifications correctly, these are suppose to be 1.7's?? What should the jet read if it's a stock jet as far as the number goes?

On the Bike Bandit site, the parts listing for the carbs appears to show the jet in question as the "68: Jet Pilot Air 1032772 (434835-001)" This appears to be the same jet I'm talking about above.

 

[Darin Jordan]

Here is another example of a BS32SS Carb float-bowl flange without this hole open.

I'm trying to find an example picture where it's like mine... Hole drilled and the float bowl NOT covering it. Being a second/third, maybe fourth-hand bike, I don't know it's full history, so I'm just trying to make sure that what I started with was the appropriate baseline. Seems odd to me to have a hole like this in a carb, purposefully left open, but with a gasket and flange all the way around it as if it should have been covered.

 

[Darin Jordan]

Second, I mentioned before that the "Main Air Jets", the larger jets on the left side of the air-filter side of the carb, are 180's. If I'm reading the specifications correctly, these are suppose to be 1.7's?? What should the jet read if it's a stock jet as far as the number goes?

I did some searching and found a set of specifications that show this jet varying from 180 to 190... but either way, it looks like it's part of the slow speed system and shouldn't really have any affect either way on the open throttle performance.

I'm running out of things to eliminate in this process of elimination...

 

[Guest]

More checking results, and questions

Visually checked the fuel levels with a clear tube and they are right on.

Pulled the carbs back off tonight and removed the float bowls to re-verify everything. Rechecked float height, inspected all the jets, etc. Sealed the little aluminum plugs I mentioned before, reinspected the needle/seats... Everything looks good.

Two questions, however.

Looking at the "GS Resources Carburetor Clean & Repair Pictorial", and comparing the carbs in the picture to mine, I noticed something that looks curious.

On the float-bowl mounting flange, on the carb body, there is a small hole that the gasket goes around, but the float bowl doesn't cover it. The hole is essentially open and uncovered when the carbs are assembled. See the attached picture... the red-circled area.

In the Pictorial, on the example carbs, there doesn't appear to be a hole in this location, or it's covered./plugged.

Is this hole suppose to be uncovered?? Is it possible these carbs have incorrect float bowls??

Second, I mentioned before that the "Main Air Jets", the larger jets on the left side of the air-filter side of the carb, are 180's. If I'm reading the specifications correctly, these are suppose to be 1.7's?? What should the jet read if it's a stock jet as far as the number goes?

Mine also have two different sized air jets. If I remember correctly(without looking) the two inside carbs have 180 and the outers have 170. I've often wondered about that one myself. But it runs fine so I just ride it.
Shouldnt have anything to do with the issue your having. From the info I gather these are mainly your idle circuit. Someone correct me if I'm wrong.

I had to read back to see if you'd mentioned, where do you have the mix screws set?
According to my instructions they should be 4 turns out from lightly seated.

 

[Darin Jordan]

Mine also have two different sized air jets. If I remember correctly(without looking) the two inside carbs have 180 and the outers have 170. I've often wondered about that one myself. But it runs fine so I just ride it.
Shouldnt have anything to do with the issue your having. From the info I gather these are mainly your idle circuit. Someone correct me if I'm wrong.

Nope... that's correct. According to the manual I found, these are part of the "slow system", and supplies the mixture ("pilot") screw.

The field is blank on the specs for my bike, but others are listed with 180s for the 1980 model year. One ("GZ") is shown with 200's. Either way, I don't think this is the issue at this point.

I had to read back to see if you'd mentioned, where do you have the mix screws set?
According to my instructions they should be 4 turns out from lightly seated.

I have my instructions sitting here and they say 4 1/2 from lightly seated, so that's where they currently are.

I haven't run it since putting the carbs all back on last night, as I wanted to make sure the sealer on the aluminum plugs I mentioned previously had fully dried. Perhaps these plugs were the cause of the extra air... who knows?

I'm still very curious about the open ports in the float-bowl flange that I pointed out above, but if I'm seeing correctly, it DOES appear that, in the manual I was able to print out earlier this morning, that the sample carbs they show DO have this open port. I'm still very confused as to what it's for, because I don't see it shown/mentioned anywhere, and it does appear to have a sealed flange designed around it, like the float bowl was suppose to cover it or ???

 

[Guest]

Mine are the same way.. Normal

New plugs yet?

 

[Darin Jordan]

I'm not sure we are talking about the same holes... I'm talking about these ones...

The example carbs don't even have the hole in the flange where noted by the red circle. Mine do, and have the gasket going around them, but the float-bowls don't cover over it to seal.

Almost looks like I have the wrong float bowls for these carbs, but ???

 

[Darin Jordan]

New plugs yet?

Do you mean new spark plugs?? If so, no, not yet. The ones that are there cleaned up with just a couple passes of a brush and some cleaner.

I will be getting some new ones, however, very shortly. Especially if nothing else seems to work.

 

[Guest]

I'm not sure we are talking about the same holes... I'm talking about these ones...

The example carbs don't even have the hole in the flange where noted by the red circle. Mine do, and have the gasket going around them, but the float-bowls don't cover over it to seal.

Almost looks like I have the wrong float bowls for these carbs, but ???

Mormal...
Mine are the same.. Sorry, best pic I could take. Carbs are mounted on the bike.

 

[Guest]

Do you mean new spark plugs?? If so, no, not yet. The ones that are there cleaned up with just a couple passes of a brush and some cleaner.

I will be getting some new ones, however, very shortly. Especially if nothing else seems to work.

I'd install news ones before ya start the bike again.
While you're at the parts store buy a can of seafoam.
Add about a qtr of it to a tank of fuel.

 

[Darin Jordan]

I'd install news ones before ya start the bike again.
While you're at the parts store buy a can of seafoam.
Add about a qtr of it to a tank of fuel.

I believe the plugs are currently BP8ES... Any other recommendations??

 

[Guest]

i believe the plugs are currently bp8es... Any other recommendations??

b8es.......

 

[Darin Jordan]

b8es.......

Just double checked... that's what's in there now... I picked up some new ones, and a can of SeaFoam as well... Will give it a try tonight.

 

[Guest]

Let us know...