Z4 rocker cover gasket problem

Taffndebs

Taffndebs

Member
Hi can anyone help me I recently changed the rocker cover as per my previous post but I have still got an oil leak I took off the rocker cover and found lots of splits in the new gasket see pics. Have I done something wrong or just a bad gasket IMG_6419.jpegIMG_6418.jpegIMG_6417.jpeg
Hopefully can see the pics
Thanks
 
It’s no where near the bolts are as per pics but I didn’t torque it
Maybe have to invest in a small torque wrench
IMG_6424.jpegIMG_6423.jpegIMG_6422.jpeg
 
N52? Torque is so low I wouldn’t worry, looks more like it fell out of the cover as you fitted it to the car, try using grease in the groove then putting the seal in to that, should hold it in place.
Grease will dissolve into the oil so no issues.
Do not use sealant as it will go hard and bits can break off and block oil ways
 
Thank you will try the grease trick I had used hi temp gasket seal to keep it in place which it seemed to have done And still feels quite soft will order a new gasket and try again
 
It’s one of those jobs where you want to follow the torque specs and procedure.
Yes it’s not a a lot of pressure but you want a nice even spread over the rocker cover. These things love to leak.
So do it nice or do it twice.
 
enuff_zed said:
N52? Torque is so low I wouldn’t worry, looks more like it fell out of the cover as you fitted it to the car, try using grease in the groove then putting the seal in to that, should hold it in place.
Grease will dissolve into the oil so no issues.
Do not use sealant as it will go hard and bits can break off and block oil ways
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Might also be worth getting a second pair of hands in to hold the gasket in place when the rocker cover is being lowered into place.
 
Taffndebs said:
We were both doing it and it went on lovely stayed in the cover as we put it on thought we’d sussed it :lol:
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Definitely looks like it was pinched.
One of you has a wonky eye. :rofl:
 
Taffndebs said:
That’ll be me then :rofl: :rofl:
just confused me with how many splits there was
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Firstly, are we talking to Taff, or Debs?
Could influence my next flippant reply. :roll:
 
I always use Elring brand gaskets and seals for cam covers, done a few now and had no problems. I always follow TIS instructions and ensure I use Blue Hylomar gasket sealant only around the half moon shapes at the front and rear of the cover and between the Vanos at the front to ensure a good seal where the gasket changes direction around the half moons.
Replacement becomes required when the originals become hard and loose their sealing capability often seen by oil leaks onto the exhaust and plug wells filling up with oil fouling the top of the plugs and coil pack ends.
 
colb said:
I always use Elring brand gaskets and seals for cam covers, done a few now and had no problems. I always follow TIS instructions and ensure I use Blue Hylomar gasket sealant only around the half moon shapes at the front and rear of the cover and between the Vanos at the front to ensure a good seal where the gasket changes direction around the half moons.
Replacement becomes required when the originals become hard and loose their sealing capability often seen by oil leaks onto the exhaust and plug wells filling up with oil fouling the top of the plugs and coil pack ends.
Click to expand...
Same here. Always Elring. Never had a problem with them.
Looking at the photo again it's a 2.0 N46 isn't it?
So the halfmoon bits don't apply in this case.
However, I once bought a gasket set for an N46 and the part that pushes down into the slot was too tall, so the gasket didn't seat properly. Got an Elring and that sorted it.
I'm wondering now if that is the issue here? Gasket didn't sit down flush and consequently got pushed over when fitted to the head.
 
Hi have now ordered an Elring gasket what are TIS instructions, should the gasket be fixed into the top before offering it up
Sorry for all the questions just don’t want to get it wrong and waste another £60 on a 3rd gasket 😢
The weather is getting warmer and I need to be out in her :D :D
 
Taffndebs said:
Hi have now ordered an Elring gasket what are TIS instructions, should the gasket be fixed into the top before offering it up
Sorry for all the questions just don’t want to get it wrong and waste another £60 on a 3rd gasket 😢
The weather is getting warmer and I need to be out in her :D :D
Click to expand...
Yes, slot the gasket into the cover first. If needed use a little grease but from memory I don't think you need it on the engine. It seems to hold in place quite well.
The torque on the bolts is 10Nm. Tighten them in a diagonal sequence to avoid distorting the cover.
NB. My apologies to [ref]colb[/ref], my memory was playing tricks and you will need a dab of sealant on the half-moon sections. Install the seal in the cover then put a small blob of sealant in the angle of the seal where it changes direction sharply to go over the half-moon part.
 
Thank you all for your help fingers crossed we do it right this time
Thought I’d add a pic of my car it’s a bit of a marmite colour but I love it and have no intention of selling her 😁00472462-c980-4b2e-861c-eceddf877b94.jpega4cedf9d-88c4-4ad3-bac3-498adf8a8aee.jpeg
 
TIS is BMW's Technical Information System it's an online resource for which you have to be a registered user. It used to be free access but changed a couple of years ago so it can't be freely accessed now unless you were a user before the change. I was lucky and retained free access. They are very strict with usage and don't allow sharing links. Got pulled up by them for doing so in the past.
The pay to view version is here https://bmwtechinfo.bmwgroup.com/#/login
 
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