| Author | Message | ||
     Arizona_buell |
Hello I have a rebuild post going here but thought I would ask about the crankshafts. The bad crank has the nuts on it to remove the pin and the good crank is press fit on the pin. Are they interchangeable??  The reason I ask is because after having the crank trued and new timkens installed and end play set the cases won't go all the way together by almost .06 and if I draw it together with the bolts the crank won't turn. So did they not get the Timkens set right or are the cranks different? I can't believe they changed anything on the cases. Help? | ||
| Arizona_buell |
 This should have been the other picture. | ||
| Onespeedpaul |
my un-educated guess is something is not right with the bearings, either not pressed on correctly or the wrong bearing altogether. | ||
| Sleez |
i know the newer cranks are different, the case needs to be machined to take it. i have a 97 case and bought a newer X1 crank, but the case needs machining first. i am not sure of the exact years or p/ns at this moment, hope that helps some??? | ||
| Arizona_buell |
Well since I am going to eventually rebuild both of these engines I guess I will just rebuild the crank that came out of the cases I intend to use.The crank with the nuts has a bad bearing on the front cyl.Might as well start with a rebuilt crank . More money. | ||
| Azrael_cervale |
I have a 99 S3 motor that had a bad crank but came with a newer style crank and while trying to install I found the same issue, all's well until you start tightening the bolts then it locks up. A mechanic I asked (independant Harley guy) said the case would have to be machined. I'm in the same boat, rebuild the old crank or machine the case for a new one. I'm trying to do it on a tight budget so I'll look into a new crank pin and go from there. Otherwise how bad of an idea would it be for me to try and clearance the case myself with sanding discs or something as opposed to having it machined? Or does anyone know what a machine shop would charge to do it right? The mechanic guy was thinking $500 but that seems ridiculously high to me. | ||
| Arizona_buell |
I wouldn't think anywhere near that. I am a machinist and we charge $60.00 an hour some go $80.00 an hour. If the crank in fact sits in the center of the cases then you would have to machine the right side of the case where the bearing race is. Seems like around .0625 would do the trick maybe less. For my situation I was going to rebuild them both eventually and if I fit one then the other would be screwed. I will fit the other case half tonight and see if there is indeed a difference in the two right side case halves and let you know later. It appears I am going to have to have my rods and pin repaired and or replaced as needed to fix this issue at this point. Thanks for the input. | ||
| Sleez |
NRHS does this machine work, get in touch with them they may share some info. i was quoted to do mine, many years ago, no idea what they charge now. | ||
| Arizona_buell |
   Well I measured both right hand case halves and the old crank with the nuts the case boss is .222 and the other case without the nuts is .137 tall. That made me wonder if the bearings were different and they are by .100 . I measured the case bosses with a depth mic so they are fairly accurate for reference. The bearings I just used the depth measurment from the end of my calipers. So right case and right bearings are different. These are supposed to both be 99 X1 engines the new crank must be late 99 early 2000. That would be a no go for sanding Azrael. Sorry let me know if I can help some more.. Mark | ||
| Foximus |
I've always been tempted to switch out to the lighter cranks.... or just have mine balanced and lightened... | ||
| Rick_a |
The newer cranks are not much lighter; about 1lb. The weight is distributed differently, however, and the design creates less crank windage. 0.085" is what is typically machined off the crankcase for clearance.   | ||
| Radon30 |
I had my crank lightened, knife edged and balanced. Seemed to rpm up alittle quicker. |
