doink
L plate rider.
Posts: 45 
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Post by doink on May 25, 2019 1:09:21 GMT 1
My mates drilled out his ball bearings in his carb and has asked me what “glue” do you use to stick them back in?
Sounds abit odd as I thought they’d just knock new ones back in?
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Post by shaunthe2nd on May 25, 2019 7:02:40 GMT 1
I use a but of threadlock but I reckon a bit of loctite or araldyte is just as good.
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Post by peter007 on May 25, 2019 7:32:24 GMT 1
when i did mine a couple of months back ( which made a huge difference btw ) mine were pretty snug going back in so i put some threcebond case sealant around them and then covered it when fitted with the threebond left it a couple of hours till dry and bobs ur uncle set . and still spot on last week when i fitted new throttle cable , hope this helps ,Pete  |
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Post by stusco on May 25, 2019 7:50:52 GMT 1
I just knocked mine back in no sealant required
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Post by jon on May 25, 2019 8:57:58 GMT 1
I usually put a bit of loctite on finger and thumb and roll them around a bit before tapping in.
Don’t use too much just a light smear or you risk blocking the airway you’ve just cleaned out.
Jon
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Post by Ozhammer on May 25, 2019 13:31:58 GMT 1
You can thread the hole with a M5 bottom tap and then fit a brass grubscrew to make it easier to remove it next time.
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Post by JonW on May 25, 2019 13:34:28 GMT 1
Some people fit new balls, but some refit the drilled ones so they can get em out again without drilling...
I just use a tiny bit of loctite and be careful not to smash em in, they might go in too deep.
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Post by marrcel on May 25, 2019 16:55:54 GMT 1
My locktight did not withstand petrol. It is just gone.
I installed new brass 4.5mm ones. I had to tap them in. The snug fit is ok without locktight.
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Post by beardy on May 25, 2019 18:04:28 GMT 1
Some people fit new balls, but some refit the drilled ones so they can get em out again without drilling... I just use a tiny bit of loctite and be careful not to smash em in, they might go in too deep. Same as above except I used epoxy resin |
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Post by marrcel on May 25, 2019 18:42:03 GMT 1
Some people fit new balls, but some refit the drilled ones so they can get em out again without drilling... I just use a tiny bit of loctite and be careful not to smash em in, they might go in too deep. Same as above except I used epoxy resin And did you check if the resin is still there? |
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Post by beardy on May 25, 2019 20:38:21 GMT 1
Hi Marcel. I first did the brass balls last August when I was having running problems. I last did them again a couple of months ago as I was still having issues. The resin was fine but I don’t doubt that over a longer period of time it may well effect it. I’ll just have have to keep an eye on them.
Steve
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Post by marrcel on May 25, 2019 20:49:16 GMT 1
I used a blue thread lock. I dont know which componants are in.
But after 300km it was gone. But balls still fit.
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Post by JonW on May 26, 2019 6:39:28 GMT 1
Interesting... while the 'inside' of the ball sees fuel, the outside shouldnt see much at all as its on the air side so its not continually covered in it.
I might peen over the edges of the alloy very lightly now just to be sure, but I dont see these dropping out as theyre a good fit even without any 'glue'.
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Post by jon on May 26, 2019 7:47:26 GMT 1
Some people fit new balls, but some refit the drilled ones so they can get em out again without drilling... I just use a tiny bit of loctite and be careful not to smash em in, they might go in too deep. Jon, I’m fairly sure there is a very slight ridge with a change in diameter from what I can remember. This effectively bottoms out the balls, so it can’t go too deep unless you really force it. You’re right about the outside loctite no seeing petrol. I put a thin smear on insertion, then a drip on the ball. This puddles towards the outer of the ball and carb body. There is some kind of green paint/sealant on originals isn’t there? Jon |
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Post by JonW on May 26, 2019 8:07:57 GMT 1
Some people fit new balls, but some refit the drilled ones so they can get em out again without drilling... I just use a tiny bit of loctite and be careful not to smash em in, they might go in too deep. Jon, I’m fairly sure there is a very slight ridge with a change in diameter from what I can remember. This effectively bottoms out the balls, so it can’t go too deep unless you really force it. You’re right about the outside loctite no seeing petrol. I put a thin smear on insertion, then a drip on the ball. This puddles towards the outer of the ball and carb body. There is some kind of green paint/sealant on originals isn’t there? Jon You may well be right, Im not 100% all carbs Ive done had it tho as some went in further than others with only a gentle tap :/ I'd not noticed anything on the originals, but paint would be as good as anything else to seal and stick etc. |
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Post by fredrikspansk on May 26, 2019 9:43:30 GMT 1
Thank you all!
This and the other threads about cleaning behind the balls saved me from going mad .
Rebuild my engine over the winter
tried it out a few days ago and it would not rev over 7500
and ofc i checked "everything"
clean the balls last night and tried it today
and it goes like a dream !
Thank you guys !
/Fredrik
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