My RKT 858 experience

[TRS]

An old trick is to use a thick piece of glass to move(stretch/compress) the O-ring into place.

 

[AKSNOWRIDER]

Quote:
Originally Posted by rkm
Im I the only one that sees silicone sealer on the inner head o-ring?



This is never a good idea, it is more likely to cause a long term leak path than not. If you need something to hold the O-ring in place because you want to re-use it and stretched it when you cleaned it, use a light film of grease to hold it long enough to bolt the head on. You should never use silicone or RTV with O-rings.

It is also a better idea to use a very light film of grease on gaskets so that you can re-use them. I never use RTV and a gasket as it negates the need for a gasket at all and in most case cases the gasket to slip and leak, as it is now floating on the RTV that regardless of the torque applied the mating parts can not get a bite or crush on the gasket that provides the sealing.

very true..but I didnt say i use it ..just that i have seen it used many times ...I prefer totally dry myself...

 

[05900]

BigFoot on 858 assembled with greased gaskets!

 

[m8magicandmystery]

...I prefer totally dry myself...

how does she feel about that..??

 

[xc6rider]

Does anyone else think that it just looks like tight ring gap???

Without seeing the pistons anyways.....