racer Posted August 19, 2004 Report Share Posted August 19, 2004 (edited) not sure how it happened, but i broke the nipple off of one of my crank bearings. before you tell me to get a stroker crank is there any way i can fix this. its a wiseco LR, so i can have it rebuilt but i hear that they are never the same after being rebuilt. also, how do you get the primary drive sprocket off. its the little one that rests on the crankshaft. the nipple on the left is norm but the one on the right is sheared off. i found it in the slot cut in to the case, where it is supposed to be. so how do you think this happened? Edited August 19, 2004 by therail Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 19, 2004 Report Share Posted August 19, 2004 I would think that that bearing had to partially lock or something to spin that bearing hard enough to break that off. Quote Link to comment Share on other sites More sharing options...
racer Posted August 19, 2004 Author Report Share Posted August 19, 2004 would it be ok to ride like that you think? Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 19, 2004 Report Share Posted August 19, 2004 I wouldn't. Is it broke off or did it fall out. The pic isn't really clear. Here's the problem, when a crank goes it takes the cylinders, piston or pistons and head. Then it can ruin the sleeve in the cylinder also. Have a shop look at it for you. Quote Link to comment Share on other sites More sharing options...
racer Posted August 19, 2004 Author Report Share Posted August 19, 2004 well ill put it this way. im not buying a new crank for the damn thing. are bearing reaces hardened, cause mayb i could drill it and install a nipple of my own. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 19, 2004 Report Share Posted August 19, 2004 What made you take it apart in the first place. Quote Link to comment Share on other sites More sharing options...
racer Posted August 20, 2004 Author Report Share Posted August 20, 2004 to replace a seal and when i pulled it out i noticed the little nub thing sitting in the groove that been cut in to the lower case half. Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 20, 2004 Report Share Posted August 20, 2004 (edited) To bad it's one of the inner bearings. The outer bearing are a piece of cake to replace. My stroker crank only had orings to hold the races in place. And the bearing that did have a nub wasn't like the stock crank. It was just a little bump. Here's a pic. Now that I look at the pic, I don't even see any nibs. Maybe that was my hotrod stock stroke crank I'm thinking of. I don't think it needs much to hold that race, You just don't want it spinning free in there. Edited August 20, 2004 by fixitrod Quote Link to comment Share on other sites More sharing options...
racer Posted August 20, 2004 Author Report Share Posted August 20, 2004 well it didnt sheer clean, it broke a little under the surface of the race so what about the TINIEST drop of jb weld to hold the nub into place. with the cases squeezing on it and all i dont think it will need to whole lot more than that to hold it into position. whatcha think? Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 20, 2004 Report Share Posted August 20, 2004 I don't trust jb weld. I'm still curious how the hell it broke. If I remeber right, that pin look as though it is tapped it. It's hollow with a split in it. If so, the best thing probably to do is have a machine shop get that pin out and just tap a new one in. How do you think that pin broke.. that's drivin me nuts... lmao Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 20, 2004 Report Share Posted August 20, 2004 (edited) Okay, here's a theory. The only thing I can think of is your crank started to seperate and that put enough side force on the pin in the slot to make it shear.... or the hole in the bearing was machine a little off. Or, you did it when taking it apart but those things seem tough. Edited August 20, 2004 by fixitrod Quote Link to comment Share on other sites More sharing options...
racer Posted August 20, 2004 Author Report Share Posted August 20, 2004 what, drivin you nuts? im the one whos gotta pay for the shit. its killin me. no, its a hotrod crank they're welded. plus when i took it apart it popped right out. new theory, what if itry to pop out the pin on one of the outer bearings? if it will comeout w/o damage i can mic the length and drill the other one out, replace it with that one and get a new outer bearing hows that sound? Quote Link to comment Share on other sites More sharing options...
SDD Posted August 20, 2004 Report Share Posted August 20, 2004 Do not reuse this crank without rebuilding it. Your bearing seized up and spun in the race with enough force to shear the pin off. You risk having that bearing lock up and ruin the cases. Spend the money to have the crank rebuilt. Take a better picture of the cases and the bearing. Quote Link to comment Share on other sites More sharing options...
racer Posted August 20, 2004 Author Report Share Posted August 20, 2004 SDD log on AIM if you can, my SN is cole2534 Quote Link to comment Share on other sites More sharing options...
fixitrod Posted August 23, 2004 Report Share Posted August 23, 2004 Just so you know, wiseco called me back and said a standard rod length wiseco hotrod crank does NOT come welded. Quote Link to comment Share on other sites More sharing options...
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