440va
Scoot Enthusiast
Crazy? No this is normal...
Posts: 165
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Post by 440va on Jun 11, 2012 19:30:25 GMT -5
Not too sure the safety of this tip when it comes to internals, but I did it and it worked. Pick up some 1/4" diameter rope, remove your spark plug, shove the rope in the cylinder with the piston about midway between BDC and TDC, really it's not all that important as long as you can pack some rope in the cylinder. After pushing a little rope in there, turn it until it won't turn and go ahead and bust that variator nut loose. I don't have pictures on this otherwise I would post. It worked great for me without any damage to the engine, so hopefully it'll help someone else in a pinch.
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jcoahran
Scoot Enthusiast
89 zuma ii
Posts: 347
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Post by jcoahran on Jun 25, 2012 13:27:17 GMT -5
i needed this! thanks!
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440va
Scoot Enthusiast
Crazy? No this is normal...
Posts: 165
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Post by 440va on Jun 25, 2012 20:08:17 GMT -5
Glad someone could put it to use! I know it helped me out once, I keep a little rope with me now in my on-board scoot tool kit also.
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\\-olf
Scoot Enthusiast
Iowa
Posts: 304
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Post by \\-olf on Jun 26, 2012 12:44:14 GMT -5
I don't know that I like the idea of stuffing rope into the cylinder bore, especially since the rope can carry grit and other stuff that can drop in the bore and stick to the oil film, and then you have basically sandpaper going up and down in there when the engine starts up.
Far better to just get or make the right tool for the job.
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440va
Scoot Enthusiast
Crazy? No this is normal...
Posts: 165
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Post by 440va on Jun 26, 2012 16:07:26 GMT -5
as stated before, in a pinch it works. I also used brand new nylon rope
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Post by vcam on Oct 8, 2012 14:16:29 GMT -5
Just joined today and this is my first post here but I find this very interesting as a technique. Assuming it works, seems like virtually anything soft that can be used to jam the piston would work. I think my choice to try would be a bit of cloth, probably twist up some microfiber completely clean cloth as I believe brand new microfiber would be less likely to shed anything or to harbor any grit etc and I would thoroughly shake it out before using it. Maybe some pantyhose would be good too.
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Post by 90GTVert on Oct 8, 2012 15:16:47 GMT -5
:welcome: vcam.
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Post by Fox on Oct 11, 2012 22:49:49 GMT -5
I've seen this posted time and again over the years and I've always advised against it because I've thought long and hard about it and concluded that it's not advisable but will work in an emergency and should only be used in an emergency situation where no other means are available because you can damage a valve or at the very least throw your valve(s) out of adjustment by "seating" them farther into the head with all that pressure you exert on them thereby tightening the gaps. All I can say is that if you do use this method CHECK THE VALVE LASH AFTER!. Maybe I'm wrong in that the combustion pressures exceed those produced from the rope trick but my instincts usually serve me well and they tell me that it's the other way around...  |
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Post by aeroxbud on Oct 13, 2012 4:43:54 GMT -5
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bare
Scoot Member
Posts: 55
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Post by bare on Nov 2, 2012 18:17:58 GMT -5
Dunno In My world locking the piston to effect a crank nut removal / tighten is a.. No.. No.
Risks of damaging, even bending the rod are Real.
Not to mention damaging the roller bearing surfaces on either or even both ends of the rod.
One can buy a cheap electric Impact gun for ~$50.
Much better, assuming one uses it with good care and the correct sized socket :-)
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jerry
Scoot Junior
Posts: 11
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Post by jerry on Dec 9, 2012 20:57:48 GMT -5
I bought the slam impact for $6.99 at harbor frieght. On the end is a 1/2" drive for a socket, I wanted to use a 3/8 so I bought for $1.49 an adapter 1/2- to-3/8 mine is a 17MM socket fit and very simple and no damage to anything except fingers if you miss the tool with hammer!
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Post by snakeplissken on Feb 3, 2013 11:03:14 GMT -5
If you are going to work on a scooter you need a battery 3/8 impact gun. Just look for an inexpensive one. The rope trick sounds like hillbilly to me.
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Post by shakerdriver on Feb 3, 2013 16:31:30 GMT -5
I disagree, an impact isn't needed or required. I purchased a tool from racing planet for $39 (I think) shipped that holds the variator, clutch bell and removes the contra spring nut. Impacts make the job easier but not a necessity. And as for the hammer impact, no way in hell I'd use that. Think about the stress your putting on the crank bearings and seals.
Sent from my Nexus S 4G using proboards
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Post by ottootto on Feb 3, 2013 21:37:30 GMT -5
I disagree, an impact isn't needed or required. I purchased a tool from racing planet for $39 (I think) shipped that holds the variator, clutch bell and removes the contra spring nut. Impacts make the job easier but not a necessity. And as for the hammer impact, no way in hell I'd use that. Think about the stress your putting on the crank bearings and seals. Sent from my Nexus S 4G using proboards yes ,i agree best way is a proper toll and also piston bloker isn t the right way to take care of rod and crankshaft! |
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Post by aznatama on Feb 5, 2013 15:48:59 GMT -5
I have a Y-shaped tool, and I can see how it works for the clutchbell and clutch, but I can't see how to use it on the variator. The fins seem too weak to be used as a locking point for the tool, unless you're talking about a different tool?
As for the piston rope thing, you can make a piston block out of an old spark plug if you need to, but I wouldn't use it too often due to possible damage to rod bearings and the piston.
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