| Author | Message | ||
     T_gerrick |
I'm in the process of building up a xb motor and I was wondering what people are doing to convert from the stock roller set up to timkens...or maybe how much power the stock rollers will take. I have seen them fail in a bunch of twin cams, and the few I have pulled out of xb's were on there way. Any info would be great. thanks | ||
| Blake |
http://www.timken.com/products/bearings/pdf/bearing_types.pdf Timken is a brand of tapered roller bearing. Which "stock roller set up" specifically are you talking about? I cannot recall hearing of a single lower end bearing failure in any XB, or any street Buell for that matter. It has probably happened, but it sure isn't any kind of thing to worry about. Someone please correct me if I'm wrong though. Would be interested to know what you saw that led you to conclude that the few that you pulled out of XB's "were on their way" to failure. | ||
| T_gerrick |
Yeah,I was talking about the sprocket side crankshaft bearing. I forgot to mention that. As for the INA roller- normally the cage comes apart and takes out the rest of the bearing. If you catch it early you just see scored up rollers/race and the cage is worn apart around the rollers. Harley is already on there fifth version of the bearing (24604-00D) And S&S has some big warning in there catalog about using the roller set up in twin cams...Anyway, I know Zippers will convert the cases for $300 (retail) and they take three weeks. I just don't want to pay someone for something I can do myself or wait that long. | ||
| M1combat |
I've heard that the standard XB setup can take ~110 or so ft/lbs mostly reliably (or was it ~110HP?). If you're building some power, you need to convert. That's just what I've heard from at least one engine builder that no longer sponsors this site. As I recall... |
