Piglet Posted November 6, 2023 Report Share Posted November 6, 2023 I've noticed a small weep out of the rocker box (Spitfire MK3) so I need to replace it. Can anyone suggest a good one? Would a cork one be better than a rubber gasket? Many thanks, Alex. Link to comment Share on other sites More sharing options...
Josef Posted November 6, 2023 Report Share Posted November 6, 2023 I believe the neoprene ones the club sell are better than the original cork. Though sticking everything together with Hylomar or similar will also do a reasonable job. Link to comment Share on other sites More sharing options...
Morgana Posted November 7, 2023 Report Share Posted November 7, 2023 It depends if you have a standard steel rocker cover or a new alloy one. The standard gasket (GEG414) will not fit an alloy cover. I have this problem with a Herald 1200 where the PO has used an original type gasket with a new alloy cover. The alloy ones have flat sealing surfaces with no rim to retain the standard narrow gasket so need a thin, wider gasket. Rimmer Bros. have an example of this thin type for the alloy covers in silicone (AJM414URT), as do the Club Shop. I like rubberised cork, so have got Rimmers' thin cork version for the Herald (AJM414T). Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 7, 2023 Report Share Posted November 7, 2023 you really cant do a mix and match tin cover needs a thick cork/rubber type gasket the alloy needs the flat neoprene one the sealing faces are so different you need to get it right even the tin cover has very poor gasket location and often needs sealer to hold it in place while you fit it misplaced gaskets are a common source of oil leaks along with over tightened covers getting quite distorted Pete Link to comment Share on other sites More sharing options...
Piglet Posted November 7, 2023 Author Report Share Posted November 7, 2023 Thanks lads! I have an alloy one so I'll place (another!) order with Rimmers. Alex Link to comment Share on other sites More sharing options...
Piglet Posted November 15, 2023 Author Report Share Posted November 15, 2023 So I now have my ridiculously expensive neoprene gasket...and on a little sheet of paper it says I need to use sealant. Can someone point me towards the correct stuff? Preferably not from Rimmers! Alex Link to comment Share on other sites More sharing options...
Andrew Posted November 15, 2023 Report Share Posted November 15, 2023 First of all but from club shop to support our shop. Second you do not need any sealant on a rubber gasket. I fitted mine at least three years ago and no leaks Andrew Link to comment Share on other sites More sharing options...
dougbgt6 Posted November 15, 2023 Report Share Posted November 15, 2023 I think the sealant holds it in place while you get in on, particularly fiddly on a 6 cylinder longer block. Doug Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 16, 2023 Report Share Posted November 16, 2023 i have never needed sealer either on the Vit6 or the 2000 with alloy covers and club gasket they worked fine for Years Pete Link to comment Share on other sites More sharing options...
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