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Gasket Seal

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ArtQ

ArtQ

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I am replacing the valve cover gasket on my BT7 and am getting conflicting advice on using a sealer or not. I am going to install a cork gasket from Moss and plan to use the Hylomar sealer they recommend. The question is---sealer or not?

Thanks
 
---- /bcforum/images/%%GRAEMLIN_URL%%/savewave.gif

-----------SEALER-----------------------Keoke- /bcforum/images/%%GRAEMLIN_URL%%/yesnod.gif
 
------------------Use the HYLOMAR!----------Keoke- /bcforum/images/%%GRAEMLIN_URL%%/hammer.gif
 
I read an interesting thread on this forum about your subject. The writer suggested seal on the block side only for ease of valve cover removal and the cork gasket provides a dam to contain oil durring valve setting episodes.
 
Hi Bob, /bcforum/images/%%GRAEMLIN_URL%%/nonod.gif some more Irish whispers if the gasket would seal on one side with out sealer, it certainly should seal on the other and no sealer should be required. However, Hylomar is a unique sealer which will allow the cover to be removed and reinstalled with out the usual adhering problems associated with other sealers--Keoke
 
Ahh learn something new every day. Based on what Keoke said and keeping in mind the other post I suggest you use silicone on the block side (to keep the cork in place) and Hylomar on the valve cover side for ease of removal and re-installation. I have always used Permatex 2 non-hardning 2c but maybe that is in fact Hylomar.
 
Hylomar is supposed to be a 'none setting' sealant, and certainly it doesn't set rock hard like Green Hermatite for instance. However I suspect over time it will set hard enough to pull a cork gasket apart on removal.

It's certainly a very good sealant. I recently had a problem with leaking cooling hoses on my 100kW Induction Furnace - no matter how well or often I tried to make the copper pipe to neoprene tube joints leak free, they always wept a bit. So I disassembled them, smeared the copper with the Blue Hylomar out of my Healey tool roll, and slide the neoprene tubes back. Not a trace of problems since.

Wasn't there some talk recently about Hylomar changing it's formulation? On the strength of that I laid in a stock of a few tubes from eBay.
 
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