sinisterboo Posted January 15, 2008 Report Posted January 15, 2008 well i went ahead and split my cases to make sure there wasnt anything else to sneak up and bite me in the ass before i "cub" it, and i noticed the orings on the crank bearings were all tore up. what is the purpose of these? btw, its a hot-rods crank, and the bearings still feel great. Quote
Dave I. Posted January 15, 2008 Report Posted January 15, 2008 orings on the crank? the rubber seals on the flywheel and clutch sides? If thats what you are talking about then they need to be replaced. That is what seals your crankcase. What size cub did you get? Quote
NYUK Posted January 15, 2008 Report Posted January 15, 2008 the o rings on the outside of newer hot rods cranks replace the locating pins. keeping the outter bearing from spinning. if yours are tore up. i would replace them. Quote
Dave I. Posted January 15, 2008 Report Posted January 15, 2008 the o rings on the outside of newer hot rods cranks replace the locating pins. keeping the outter bearing from spinning. if yours are tore up. i would replace them. I see. Im still running the stocker. Wasnt aware of the hotrods orings. Learn something new everyday. Quote
sinisterboo Posted January 17, 2008 Author Report Posted January 17, 2008 thats the ones in that pics, are they wiseco items or can i just measure them and source my own? Quote
jbooker82 Posted January 17, 2008 Report Posted January 17, 2008 thats the ones in that pics, are they wiseco items or can i just measure them and source my own? How do you replace the center o rings. Going to try to streatch them over the crank and hope hey srink back down? Quote
sinisterboo Posted January 17, 2008 Author Report Posted January 17, 2008 yea, i tried it with the one that was still good, i can do it. and i dont have a cub yet, havent decided if i want a 358 or 392. Probably get 392 and be done with it as its same price. Quote
NYUK Posted January 17, 2008 Report Posted January 17, 2008 How do you replace the center o rings. Going to try to streatch them over the crank and hope hey srink back down? theres o ring kits from grainger. you can cut the size you need and use a dab of krazy glue to make the ring without stretching the shit out of it. i have done it on coolheads. Quote
jbooker82 Posted January 18, 2008 Report Posted January 18, 2008 I guess it doesnt have to seal anything. Just take up the slop between case halfs. Quote
2strokespirit Posted January 18, 2008 Report Posted January 18, 2008 Can someone tell me whats the thickness of the o'ring, This is new to me as well and want to use this in the future, but to thick of a o'ring and the cases wont seal. Thanks Quote
sheerider1026 Posted January 18, 2008 Report Posted January 18, 2008 i would think that if the oring was too thick, the cases would still seal up, the oring would just mash flat.. not sure though. what if you said the hell with it and left the orings off? Quote
sinisterboo Posted January 18, 2008 Author Report Posted January 18, 2008 thats what my local shop told me, they arent super important. but since i am waiting to get my jugs machined i figured i'd kill some time and research what to do. i'm not gonna kill a set of cases over a 3 cent oring. i will measure them tonite and post what i find. Quote
2strokespirit Posted January 18, 2008 Report Posted January 18, 2008 i would think that if the oring was too thick, the cases would still seal up, the oring would just mash flat.. not sure though. what if you said the hell with it and left the orings off? In the past I have used some locktite or bearing locking compound on ONE casing, otherwise it is hell to split the casings, never had a problem. Just 2 - 3 drops.. Quote
sinisterboo Posted January 20, 2008 Author Report Posted January 20, 2008 I will measure the grooves on the bearing races. I will post the measurements soon. Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.