hot rod crank O-ring

[bansheeqc]

I split the case of one of my drag bike with a 4 mill 115 rod hot rod crank. I want to know if it's possible and how to replace the o-ring of the crank in the center. I change a couple of time the o-ring on the outside bearing, but on the center, i'm not sure if it's possible...

 

If not, what are you doing to fix?

 

thank you

[NYUK]

graingers, or any industrial supply house sells a multi size o ring do it yourself kit, just find the right diameter to fit, cut it and crazy glue it.

[bansheeqc]

graingers, or any industrial supply house sells a multi size o ring do it yourself kit, just find the right diameter to fit, cut it and crazy glue it.

 

 

Okay, thank you NYUK.

 

It's best to put the cut side on the top, bottom, side?

[sleeper06]

I order the o-rings from fast racing and stretch it on ,they dont brake just use your head at the smallest pionts wiggle it on .I have done it many many times

[bansheeqc]

I order the o-rings from fast racing and stretch it on ,they dont brake just use your head at the smallest pionts wiggle it on .I have done it many many times

 

You are able to stretch the oring to pass over the crank web?

[J-Madd]

You are able to stretch the oring to pass over the crank web?

 

 

Yes, it'll stretch just fine.

 

I think I've ran them with no orings before. Anyone else done that, or had issues sans orings?

[Rsbanshee]

i ran mine once with an o ring missing and you could actually hear the whole bearing spinning inside the case halves. i would highly recommend installing a new o ring since u already have it torn apart

[Koolguyson]

The o-ring doesn't do anything other than hold the bearing in place. You can glue the o-ring together with some super glue, or you can leave the o-ring out and loc-tite/1211 the bearing in place as well. Either way is just as effective.

[J-Madd]

I don't know if I put orings in my 16 mil Twister. I had the crank rebuild, and you'd think they would put o-rings on it, but it had none - so I just thought they were optional. $500 to rebuild the f'n thing. I haven't even started it yet, and just got in in the chassis and almost ready to run yesterday.

[Finch]

i didnt use o rings just 1211

[BigRed350x]

1211 will hold the bearings in place. Just put a dab in the groove where the oring used to be and let it set up good before running it.

[guns4children]

Did my Wang crank come with orings? This is a 2nd generation Wang.

[mike0chek]

Did my Wang crank come with orings? This is a 2nd generation Wang.

 

my 1st gen did, not sure about 2nd.

[salmon_slayer06]

I know this is an old post but did a search on this "O ring" for cranks. The o ring ripped on the left cylinder side of crank and bound up inside the port that leads to that side. At first I thought this was my air leak issue. Glad to see that this shouldn't be the leak. I will rebuild the motor and use the loctite method. Question is do I take all the rings off and use the loctite on all of them or just the side that ripped? Any ideas? How hard is it to split the cases after using the loctite on those? Thanks a bunch, I will sleep better tonight knowing that those are not that critical....