29 smootbores

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Sounds like they are trashed. I will dispose of them for you. I won't even charge you. :laugh:

willemZ900 wrote:

Well, i have 2 completely rebuild smoothboresets, 1 with an accelerator pump. Both sets run like hell but have the same problem and that is strange becuase my 28mm Z1R set has not. The pingel petcock is new, has a nice filter and is special for large diameter tubes. Tubes are also new. So my first thought was that it could be a vacuum block in the petrol tank or (WG idea) the advancer. hmm back to my garage :blush:

Not to get off the track but this is the second time I have heard about 29mm smoothbores having accelerator pumps the first time I saw one with a picture. I wonder how many were made like that. I thought those were problematic and the one I did see I thought it was a photo shopped version trying to make the rest of us confused.
I have a comment for what it is worth. My bike had the same problem until I put a really good filter in it. The kind pingel sells that you can clean out and reuse. The filter I used before copper inside and see through doesn't work, for me anyway, once I put the "expensive" filter on my problems completely went away. Yeah you hammer it and WOT sucking more gas than flows and you hesitate and in that moment the gas fills up the bowls and you go again. PITA The advancer plate might need lubed too even if that is not the problem really good idea to keep it lubricated. I hope you get her sorted out.

I missed that whole page. I hate those petcocks. I have an idea. Not knowing whether or not you feel the same but since you have kick ass carbs on the bike take the next step and 86 those parts that need upgrading. Get a nice pingel petcock and some K&N Pod Filters and let that bike see a new level of performance for a change. But of course I haven't seen the exhaust if you do that then the exhaust should be upgraded too. Too bad you can't still get the best flowing exhaust for that bike any more but some V&H will do quite nicely with a comp baffle.
My bike completely changed from being ok to kinda wild.

Russ Jackson wrote:

My bike is doing the exact same thing. I put an inline filter in and it sounds and feels like it is starving for gas. When I ran it without a filter it ran correct. However without the filter float bowl #1 stuck twice causing gas to trickle out of the pod so I went to the inline filter. The stock petcock angle makes it tough to utilize the reserve side and get a clean flow to the carbs. I am sure many of you have addressed the issue. I would love to see a picture of the best set up...Russ

I have found that some fuel filters have a very small hole in the nipple.i ended up buying a few for my 1327cc motor,with rs34 carbs .i wanted a 3/8 fuel line and filter. when i ordered 1 it had a 3/8" OD but the ID was 1/4".
The point i'm triing to get across is that all filters are created dif. so check the id of the hose barb on it just to be sure.
As for the petcock lever hitting the carbs when u turn it to reserve. i found a cure.I redrilled and tapped the screw hole that holds the lever in place, onto the oposite side. this allows u to install the lever on backwards.now the lever faces the back of the bike for reserve.
I noticed on Pattons pic the petcock is well back of the carbs. for some reason mine was very close. it must be the tank dif on the Z1 vs the KZ.

Thank you for the pictures Patton. They are a great help. They are about what I plan on doing. I guess these smoothbores use alot of gas. I think I will trash this carb pull off my Kerkers and go to stock carbs....Russ

that is great solution russ....take those troublesome 29's and that anti-social kerker and throw em right in the trash cans...be done with em!!!!!!!
by the way what is your address and what night do you put your trash cans out...just curious.....

where do live because i could probably be talked in to driving down and take those bad 29's and that very bad kerker plus 1 or both lester mag's from you so you won't get frustrated. that's just the kind of guy i am always here to help.

Feel the love in this place..I...I think...my eyes are...leaking.

Me too, snif snot :laugh:

Glad you guys are there to help me in my time of need. LMAO...Russ

Hi folks, a little bit late reaction but finally i found out the problem .
After desperately seeking for the problem this summer the trouble appears to be the advancer. It looked well and clean from the outside but in a last attempt to find out the problem i decided to remove it for a further inspection. Under the rotor is a very thin washer and it was damaged/krinkeled and the rotor was not able to run freely. I changed it and the problem was immediatly gone.
The carbs are now also running very well, and the bikes stationary is a beautifull steady 900 rpm. Before i found the problem this was not steady at all so this means if the smoothbores are correctly cleaned and synchronized, what i did, it is possible to run smooth stationary . Thanks for al the thinking and the reactions.
Greetings from The Netherlands
Sorry for my english :blush:
Willem