gnotte Posted October 25, 2009 Report Share Posted October 25, 2009 (edited) Hello, are there any better or equivalent alternatives to Shellac to seal the rear main bearing cap engine ? Guy Edited October 25, 2009 by gnotte Quote Link to post Share on other sites
RogerH Posted October 27, 2009 Report Share Posted October 27, 2009 Hi Guy, due to the lack of replies I will offer my thoughts although I do not have a 6. If shellac was originally used then there should be no reason not to use it now. However it does give quite a delicate coating and may chip off during assembly etc. I would have thought one of the modern sealants such as 'Welseal' would do the job as when dry leaves a tough thin skin. That should provoke the flow of expert advice Roger Quote Link to post Share on other sites
stuart Posted October 27, 2009 Report Share Posted October 27, 2009 Some of the original workshop manuals quote wellseal for shellac use so I would go with that. Stuart. Quote Link to post Share on other sites
RogerH Posted October 27, 2009 Report Share Posted October 27, 2009 I knew that would do the trick Roger Quote Link to post Share on other sites
JJC Posted October 27, 2009 Report Share Posted October 27, 2009 [All the books I've got say Wellseal. If your'e talking about the square cross section felt that slides down either side of the cap then I've used Wellseal on that. You tend to get more Wellseal coming out of the joint when you push the felt in than you would like. So I wouldn't soak the bits of felt in it for too long. Good luck. JJC Quote Link to post Share on other sites
greasemonkey Posted October 30, 2009 Report Share Posted October 30, 2009 [All the books I've got say Wellseal. If your'e talking about the square cross section felt that slides down either side of the cap then I've used Wellseal on that. You tend to get more Wellseal coming out of the joint when you push the felt in than you would like. So I wouldn't soak the bits of felt in it for too long. Good luck. JJC The guys at Racetorations recommended silicon RTV sealant when I rebuilt my engine a few years ago - just make sure that you wipe the surface inside the block clean after you have filled the cavity with the sealant to avoid getting any globules into the lube system. Also, degrease the surfaces prior to assembly. Much easier than faffing around with felt & Wellseal etc.. Quote Link to post Share on other sites
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