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Rocker leak??
https://cimg8.ibsrv.net/gimg/www.sco...0ceba737b.jpeg Came back from holiday to a drip leak on the bottom edge of the off side rocker cover and noticed that there is a small half circle piece that has been pushed inside the rocker cover. Can anyone tell me what the purpose of this small half circular piece is?? |
they are cam cover seals or half moons as they are called. you will prob have to do the rocker cover gaskets now and buy replacement half moons
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It’s merely an oil seal. So it’s purpose is just that. Completing the cast shape of the head to keep the oil in the engine ��
They are prone to failing once they get a bit of age about them. Standard o.e replacements are cheap, https://www.importcarparts.co.uk/par...y=&searchPart= Or you can get aluminium inserts to replace them of the likes of iag |
Get that sorted asap if it falls in it could cause considerable headaches.
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Thanks all. Full NS and OS rocker gasket set has been ordered as well as halfmoon thingies! :notworthy |
You can get Cheaper OEM gasket sets.
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Don’t forget to put gasket sealant in the marked areas otherwise it will leak worse than before you started, ive seen it happen many times, they’re notorious
Threebond is what Subaru recommend, and what I see most engine builders using on reassembly. https://cimg9.ibsrv.net/gimg/www.sco...a638e7458f.gif |
Excellent, thanks for the heads-up. To be on the safe side could I put the sealant all the way round??
Originally Posted by debbiesonic
(Post 12013576)
Don’t forget to put gasket sealant in the marked areas otherwise it will leak worse than before you started, ive seen it happen many times, they’re notorious
Threebond is what Subaru recommend, and what I see most engine builders using on reassembly. https://cimg9.ibsrv.net/gimg/www.sco...a638e7458f.gif |
Only put it where shown horrible stuff blocks oil pick ups and everything. The actual half moon/circular bit is where its most needed and a bit over the front cam carrier. Use sparingly cause it only squeezes out inside and out.
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As Joe said. You just want a happy medium, enough to seal it but no so much that gobs of it get squashed inside as you torque down the cover bolts.
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Hey guys, The gaskets and sealant have turned up so I’ll have a go at it this weekend. It may be a daft question but, where marked do i put the sealant on the cam cover then seat the gasket and put some of the sealant on the gasket too before re-fitting i.e sealant on both sides of the gasket? cheers |
Sealant on the head. The gaskets push into a recess around the inside of the cover.
Driver's side is slightly easier - just need to remove the airbox housing. Passenger side requires the battery and washer bottle to be removed. Some of the bolts are easier to get to underneath. Don't over tighten them. Long flexible head ratchet spanners are a big help. |
As said can't stress enough do not over tighten the bolts !! The metal is soft and you will knacker the threads which would be a major nightmare. Be careful!
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Originally Posted by yabbadoo4
(Post 12013996)
As said can't stress enough do not over tighten the bolts !! The metal is soft and you will knacker the threads which would be a major nightmare. Be careful!
I think i may done just that with the timing belt tensioner as the bolt wont torque up properly. Any tips and tricks on correcting this? |
ir it’s only the bolt thread that has stripped, you need this ........
https://www.importcarparts.co.uk/par...y=&searchPart= If it’s the mountings threads that have stripped (more like as they are alloy) you need this .. https://www.importcarparts.co.uk/par...y=&searchPart= Or you could use a a helicoil or time sert, i prefer to change the bracket then you know the thread is good. Nothing at all wrong with “correctly fitted” helicoils or time serts but why take the risk an such an important part, saving pennies won’t seem very frugal if you end up with the belt slipping. |
@Robbie010 didnyoynget this done? |
yes fairly simple job and just make sure the gasket is seated correctly when putting the rocker cover back on as when i put mine back on the gasket corner caught on the block and just misaligned it a little bit,put it back together and leaked oil everywhere lol.. also I use gasket sealant all over the gasket for extra seal pooowwwwaa
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