1635497banshee Posted December 17, 2013 Report Share Posted December 17, 2013 hi guys was wondering if anyone could tell me how much side to side play there should be in the rods where they connect to the crank i measured 0.45mm im redoing the top end right now and figure if something needs to b done with the crank now would b the time thanks for any help Quote Link to comment Share on other sites More sharing options...
sstaton1983 Posted December 17, 2013 Report Share Posted December 17, 2013 Has it been trued and welded? Send it to a sponsor and have it checked and welded. You should see side play with no up down play. Quote Link to comment Share on other sites More sharing options...
1635497banshee Posted December 17, 2013 Author Report Share Posted December 17, 2013 No it hasnt been trued and welded there is very minimal up and down play <br /><br />Sent from my VS950 4G using Tapatalk<br /><br /> Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted December 17, 2013 Report Share Posted December 17, 2013 Send it out to be trued and welded. Quote Link to comment Share on other sites More sharing options...
sstaton1983 Posted December 17, 2013 Report Share Posted December 17, 2013 Yep, they will check the bearings and play when it gets balanced and welded. If you can feel any up down play it probly needs rebuilt. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted December 17, 2013 Report Share Posted December 17, 2013 it gets balanced .<br /><br />I doubt they balance it. You'd have to have the pistons if you were going to do that. Then you'd have to have it redone every time it was bored. It'd have to be balanced as a rotating assembly. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted December 17, 2013 Report Share Posted December 17, 2013 <br /><br />I doubt they balance it. You'd have to have the pistons if you were going to do that. Then you'd have to have it redone every time it was bored. It'd have to be balanced as a rotating assembly. Correct about not balanced, but on a balanced crank its not needed to rebalance after a bore. The weight difference between a .010 bore and .020 or .0.30 etc. piston is not enough to throw it off. A few mm's difference is still questionable. Side to side rod play should be .024-.040" Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted December 17, 2013 Report Share Posted December 17, 2013 Correct about not balanced, but on a balanced crank its not needed to rebalance after a bore. The weight difference between a .010 bore and .020 or .0.30 etc. piston is not enough to throw it off. A few mm's difference is still questionable.<br /><br />Side to side rod play should be .024-.040"<br /><br />That's odd, because I asked one of the guys at crankworks that at one time, and he said for it to be truly balanced they'd have to have The pistons every time. Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted December 17, 2013 Report Share Posted December 17, 2013 <br /><br />That's odd, because I asked one of the guys at crankworks that at one time, and he said for it to be truly balanced they'd have to have The pistons every time. I have a balanced crank from them. And have had it checked out when I got it back. We found that it stayed balanced with less and more bob weight. When I asked what would happen from switching from 68mm to 78mm pistons, they said to send it back to be checked out. Which I can see because of the drastic change. But again the difference of a mm or two is bot going to affect it Quote Link to comment Share on other sites More sharing options...
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