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Half Moon Seal Problem

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Old 09-12-2008, 06:44 AM
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Niall.b
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Default Half Moon Seal Problem

is there a better type of rocker cover half moon seal available? I have tried the thin orange ones twice & the oil keeps leaking down the front of the head even with silicone or instant gasket applied. really need to get this problem sorted once & for all. Cheers
Old 09-12-2008, 07:34 AM
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cos47
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Are you sure its these leaking and not the cam shaft "o" rings
Old 09-12-2008, 07:47 AM
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Niall.b
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positive, i have cleaned the area & can see the oil weeping through between the rocker cover & the bearing carrier. its completely dry around the bearing & carrier
Old 09-12-2008, 11:45 AM
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tabetha
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The orange ones hould be fine I use these, although I put a thin smear of loctite 5900 in the groove just to hold them and at the ends as they always leak here.
tabetha
Old 09-12-2008, 11:59 AM
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Niall.b
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cheers, going to try resealing it up again later, Tabetha, will try using the loctite this time
Old 09-12-2008, 03:08 PM
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kosienutter
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when i had my rocker cover changed, i had new orange ones fitted and i had the same prob. plus there is a slight spray of oil (only a small amount) going over the air intake samco hose to the turbo
Old 09-12-2008, 06:02 PM
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Niall.b
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same here, got oil spraying around the whole engine bay & underneath right back to the petrol tank. its ruined a brand new timing belt, least its not the sump or crank oil seal as i originally thought
Old 09-12-2008, 06:04 PM
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Mark Shead
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Not had a problem with seals o the camcover, I would also check the cam cap and put some sealer on the joint where it touches the head.

Mark
Old 09-12-2008, 07:00 PM
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broos3
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Yeh use the orange rubber seals and some loctite 5910 or 5900. Tabetha told me to use this stuff years ago and its great. Well worth the slightly expensive price tag.

Bruce
Old 09-12-2008, 07:02 PM
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the ones for suply now are i bit stronger and there clear i use weld seal on both sides and then it never leeks
Old 09-12-2008, 07:56 PM
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borderfox
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gen ford ones are clear and a lot better.
would not fit anything else...
Old 09-12-2008, 10:12 PM
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Paul_RS
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Even i can get this right Niall

I just put sealer round any joints to the rocker cover gasket and mine is ok so far.
Old 10-12-2008, 05:35 PM
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big mac
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the orange seals i had from woodford were to thin and to short replaced with gen ford clear ones with smear of sealant problem solved
Old 10-12-2008, 07:00 PM
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So why is there so much pressure that it's spraying oil into your engine bay???
Old 10-12-2008, 07:20 PM
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Niall.b
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not spraying as such, as its running down the front of the engine & being flicked around the engine bay by the cam belt & pullies. when driving the airflow underneath the car is carrying the drops along the underside resulting in a very thin film of oil along the floorpan, gearbox, rear axle & tank. just a real pain. have stripped out the cam bearnigs tonight & found a small nick in one of the o rings. will replace this, seal the whole show up & replace the rocker gasket & half moons and hopefully that will sort it. just one of those jobs that takes a bit of time to sort out
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