andy couchman Posted May 7, 2018 Share Posted May 7, 2018 Just had the engine rebuilt and it works!However, like before (we now have an ali head), am having to run a double rocker gasket as the end of the roller rockers just touches the ali. Anyone else had this and what's the cure? I'm thinking of making a specially big gasket but don't know what from? My experience has been with brown paper and guess I'd need quite a few layers...Andy Link to comment Share on other sites More sharing options...
gulf 1 Posted May 7, 2018 Share Posted May 7, 2018 Isn't the standard gasket made from cork,is it possible to source some thicker cork. Link to comment Share on other sites More sharing options...
andy couchman Posted May 7, 2018 Author Share Posted May 7, 2018 You're right Gulf1 but I use Burton's (thick) paper gaskets as the cork ones seem to just compress then leak. Looking for thick gasket material. Does it exist? Link to comment Share on other sites More sharing options...
Roger King Posted May 7, 2018 Share Posted May 7, 2018 The solution is to machine a small relief inside the rocker cover, effectively a groove running the length of the inside to provide extra clearance. Some engines hit and some don't, depending on block height, head height, cam profile, etc.Once you've done this you don't need to worry about gasket thickness. Link to comment Share on other sites More sharing options...
Jim 123 Posted May 7, 2018 Share Posted May 7, 2018 Andy if you can upload a photo of the touch condition it may assist. For a thicker gasket have you looked at sourcing silicon rubber sheet ( to cut to profile) and bed this in Geocel Automotive Sealant on the upper and lower surfaces? Link to comment Share on other sites More sharing options...
andy couchman Posted May 8, 2018 Author Share Posted May 8, 2018 Thanks all. The marks on the rocker cover are tiny but at least I know where to machine Roger! Silicon's a good idea too - my Triumph Vitesse uses a silicon gasket there and the ali rocker cover is pretty oil tight. Thanks again all.Andy Link to comment Share on other sites More sharing options...
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