Cam/Rocker Gasket Change - Where To Put Sealant

[anonymous-user]

Hi all, I'm slowly getting round to doing all the little jobs on my mk1 Eunos and this weekend its the turn of the cam cover gasket and CAS o-ring to try and cure the oil leaks.

Question is, I know I need to put blobs of sealant (I bought high temp 'instant gasket' from a motor factors) somewhere, but can't find any directions that are in terms that I can understand! Is there any harm done by smearing it right around the edge just to make sure, or is it only needed in specific places, I've heard that 6 blobs are needed but don't know where!

Ta in advance.

[skinny]

typically you'll need the blobs at the corners of the gasket where it rises up to go over the cams. makde sure it's totally oil free and dry when you put the gasket down and if poss don't drive it for a little while, as if the silicon gets oil on it when it hasn't set, it won't stick to anything and can even get washed off and start floating about.

[Firefox1]

If you tighten the cam cover bolts in the correct sequence and every thing is clean and free of old silicon etc you should not need any additional sealant.

[itch]

I didn't put any sealant on when I changed mine. Just applied a tiny amount of oil on the gasket before putting the rocker cover back on and tightening it up.

[MX-5 Lazza]

You'll only get away without putting some sealant on if the original sealant stays in place. Mazda themselves put some in the corners so it's clear that it is a requirement. If you have cleaned the existing sealant off and have fitted the gasket without anh new sealant then if it isn't leaking now I'm sure it will before too long.
I don't see a problem with it myself. It's cheap enough and its better than having a leaky gasket!

[Digby]

None on mine either.When I did it, I didn't even give it a thought tbh! Probably not done enough miles since to know whether it mattered or not, but so far so good at around 800 miles or so.

[anonymous-user]

Cheers guys, I've bought the high-temp sealant anyway (was only a few £) so may as well use it just to be 100% sure there's no leaks, think I've got it sussed now where to use it.

[MX-5 Lazza]

Like I said, Mazda themselves put the sealant in the corners from the factory and all the dealers put new sealant on when they take the cam cover off.

[Digby]

Will keep an eye on mine, glad this was posted now!