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Post by rapidgaz on Sept 3, 2017 14:55:16 GMT 1
Hi all. My second post. Had the lc a few weeks now. I had been told by previous owner bike had last been started about 2 or so years ago. Howver as I know it had been standing for last 2 years, thought i would pull the carbs off. Well when I did and took them apart I was a little shocked 'to say the least.   So as I have an ultrasonic cleaner, thought I would set about trying to see how they will come up. Well to me carbs look possibly shagged. Can any of you kind folk tell me what are my best options. Could they be refurbed or are they beyond. Or is there anyone selling a good pair of carbs or what's a reasonably good price for a set of new carbs. Don't want high performance just reliable. Carb 1 after cleaning. Looks like all ally is pitted still. The pics below are the worst of the 2. Cheers Gareth.    |
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Post by markhoopy on Sept 3, 2017 15:58:06 GMT 1
I've seen far worse and they are certainly still useable.
Get round them with a toothbrush to loosen it all then put them back in the cleaner again.
What cleaning fluid are you using?
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Post by rapidgaz on Sept 3, 2017 16:12:22 GMT 1
Hi mark.
That's a glimmer of hope.
I have tried water and washing up liquid about 10-20 % wl
Not much use. Tried a very strong degreaser called ubec this seemed to work but took the nice coating of alloy. Maybe 2 strong. And a kitchen de greaser like mr muscle. Lol
What's best to use.
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Post by dono on Sept 3, 2017 21:16:40 GMT 1
Omg a Gaz that is bad, hope someone comes up with a good solution (literally)
Cheers
Mark
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Post by rapidgaz on Sept 3, 2017 21:26:20 GMT 1
Got the one to this today. Bit more hard work. Lol
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Post by rapidgaz on Sept 3, 2017 21:28:53 GMT 1
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Post by 4l04ever on Sept 4, 2017 14:28:05 GMT 1
Pull the needle valve seat out too, as there will probably be some more crud under it! Looking a lot better now. May be worth drilling your big balls out too.....
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Post by rapidgaz on Sept 4, 2017 16:17:24 GMT 1
Thanks for noticing my big balls.  |
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Post by rapidgaz on Sept 4, 2017 16:19:10 GMT 1
Pull the needle valve seat out too, as there will probably be some more crud under it! Looking a lot better now. May be worth drilling your big balls out too..... When you say needle valve, do you mean the emulsion tube or something else. |
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Post by rapidgaz on Sept 4, 2017 16:19:57 GMT 1
Think you mean for the float needle. Tried but it ain't moving.
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Post by 4l04ever on Sept 4, 2017 17:37:04 GMT 1
Think you mean for the float needle. Tried but it ain't moving. Get some pliers on it and rotate it. |
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Post by rapidgaz on Sept 4, 2017 19:15:34 GMT 1
Ok will give it a try.
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Post by dono on Sept 4, 2017 19:23:11 GMT 1
Don't be worried about destroying the female part of the float valve as they come as a set female is just like a blank end tube with a rubber o ring on od if your struggling maybe try a big self tapper in it then give it some heave ho and wd40. Good luck pal |
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Post by dono on Sept 4, 2017 19:54:14 GMT 1
Don't be worried about destroying the female part of the float valve as they come as a set female is just like a blank end tube with a rubber o ring on od if your struggling maybe try a big self tapper in it then give it some heave ho and wd40. Good luck pal Ps forgot to mention I have a full set of taps and thread removers if you need to loan some or come over to get it done.. Cheers Mark |
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Post by rapidgaz on Sept 4, 2017 20:10:07 GMT 1
Don't be worried about destroying the female part of the float valve as they come as a set female is just like a blank end tube with a rubber o ring on od if your struggling maybe try a big self tapper in it then give it some heave ho and wd40. Good luck pal Ps forgot to mention I have a full set of taps and thread removers if you need to loan some or come over to get it done.. Cheers Mark Cheers fella. Will do if needed. Going to buy some new internals and see how I go. |
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Post by rapidgaz on Sept 4, 2017 21:38:44 GMT 1
It's out, and good call 4lo as it's full of that white crap.
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Post by mattybeckett on Sept 5, 2017 11:17:59 GMT 1
It's out, and good call 4lo as it's full of that white crap. Will be the same behind the brass balls. Worth taking them out as said. |
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Post by rapidgaz on Sept 5, 2017 17:53:54 GMT 1
It's out, and good call 4lo as it's full of that white crap. Will be the same behind the brass balls. Worth taking them out as said. Where is best place to get new balls from. Lol No jokes please. |
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Post by mattybeckett on Sept 5, 2017 18:25:30 GMT 1
I used little grub screws of ebay ' they screwed in lovely and made there own thread as being stainless steel, spot of loctite and job done.
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Post by muttsnuts on Sept 6, 2017 14:37:29 GMT 1
those carbs have been modified, an old racers trick, you can see they haved been machined on the inlet side of the carb, that might present you with some problems jetting wise, of course, only tackle that if it don't run right when all back together
What model carb are they, 4L0-00 or 4L0-01 ?
HTH
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Post by rapidgaz on Sept 6, 2017 17:21:09 GMT 1
Hi mutts. They are 4l0 01
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Post by rapidgaz on Sept 6, 2017 17:23:18 GMT 1
The jets that are in or were in are 310. It's on a 350 top end. 250 bottom.
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Post by steeley on Sept 15, 2017 5:13:44 GMT 1
Hi ,what are the brass jets like /main. I have seen them where they have been eroded away .
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Post by rapidgaz on Sept 19, 2017 13:47:56 GMT 1
Hi steeley. Brass parts ain't bad, After removing all the white crap from right hand carb, this is how it has turned out. Not great really so need a new carb or new set. Unless this can be restored or is it past that stage.   |
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Post by lolly on Sept 19, 2017 15:27:39 GMT 1
get a new pair of 28mm mikunis from norbo ; put a new set on my 4LO ; its never ran so well
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Post by rapidgaz on Sept 20, 2017 10:06:15 GMT 1
Is norbo a bod on here.
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Post by lolly on Sept 20, 2017 10:36:19 GMT 1
yes ; he is the owner of the site ; he also has a spares shop . I bought a pair of new 28mm mikunis from him ; took a bit of fettling to install and set them up ; but it now runs as it should .
plus the bonus of brand new carbs
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Post by 4l04ever on Sept 20, 2017 13:02:55 GMT 1
Or some nice PWK carbs, as you can get an extra couple of BHP with those. :-)
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Post by 4l04ever on Sept 20, 2017 13:07:32 GMT 1
The pitted carb may still work if all the jets fit fine etc. May be worth a try before you bin it, since you already have it. I had one that was pitted fairly badly, but still actually worked fine.
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Post by muttsnuts on Sept 20, 2017 17:10:28 GMT 1
nah, that carb is done, the locating pin hole has gone which keeps the needle jet in the correct position, scrap I am afraid
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