Tornado
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- Joined
- Dec 5, 2017
- Messages
- 4,537
Had a persistent oil seep from around the rocker covers on my 850. Tried new gaskets (fibre) with some Hylomar dressing. This slowed/stopped seep at intake rocker cover, but still got seep at exhaust covers.
Today I pulled them off and set about fairing down the sealing surfaces on a plate of glass with 120-440 wet/dry paper well oiled.
These covers have been chromed both outside and in...perhaps by Dreaded Previous Owner?
The chrome process made a raised edge all around the lip of each cover, basically making the effective sealing section less than 1mm in width. The fairing process slowly got this back to full cover material width...roughly 3-5 mm.
Cleaned up the previous gaskets, new Hylomar dressing, and some polyurethane sealant on the hold down nuts to help prevent seep under them.
Keeping fingers crossed that this works...
Today I pulled them off and set about fairing down the sealing surfaces on a plate of glass with 120-440 wet/dry paper well oiled.
These covers have been chromed both outside and in...perhaps by Dreaded Previous Owner?
The chrome process made a raised edge all around the lip of each cover, basically making the effective sealing section less than 1mm in width. The fairing process slowly got this back to full cover material width...roughly 3-5 mm.
Cleaned up the previous gaskets, new Hylomar dressing, and some polyurethane sealant on the hold down nuts to help prevent seep under them.
Keeping fingers crossed that this works...