I wouldn't go near them, they are rubber seals for a reason. Just chuck new cam cover seals, half moons and the spacers for the screws every decade or two.
I add a really thin layer of silicone too and it seems to hold together OK
AFAIK on most Toyotas that half moon is usually an aluminum piece that you seal with RTV so you just source the valve cover gasket but I kind of doubt that you'll ever save money buying an aftermarket piece in this scenario.
If I tossed my money in a fire and filled my transmission with sand, it would end with the same result as buying from Speedtek. Actually, that's not true... My way, I wouldn't have to deal with Speedtek's dick head of a CEO for years on end and all his lies.
I guess the main advantage is that they start out hard and incompressible, so you can throw them away immediately, rather than waiting until they've done 50k km or something?
Has anyone used the billet half-moons that are available to replace the rubber ones at the back of RB cam covers ?
Going to change out my cam cover seals as they are weeping oil and its now driving me nuts.
Any advantage to be found ?
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