In a bid to stop my oil lead at the back of the head I plan to retorque the head bolt. I was going to tighten them over the blue book value in a bid to stop the leak. Has anyone done this before?
Thanks,
Rohan
Thanks,
Rohan
Head Bolt Torque - can you go over it?
- Thread starter 30csl
- Start date
Head gasket retorque
Yes. By all means it's worth a try.
"Caution! Tighten cylinder head bolts after 1000 km
(600 miles). This is done by loosening the bolts slightly and then
tightening them to the spcified torque¹." from the repair manual.
The reason to loosen slightly first is to overcome friction; But, if you find one loose before tighting; that's reason enough for a closer inspection of the block/ threads.
It's probably a good idea to run a leakdown test.
For grins, try an oil pressure guage. The oil relief valve has been known more not to hold as it ages and BMW changed the design; you're issue could be the opposite and just needs cleaned. Worth a check though.
There are instances of the dreaded gasket seep that were reported early on by the seniorsix and e-12 members.
Mind if I ask where abouts the seep is located? Back of the head closest to the firewall?
Yes. By all means it's worth a try.
"Caution! Tighten cylinder head bolts after 1000 km
(600 miles). This is done by loosening the bolts slightly and then
tightening them to the spcified torque¹." from the repair manual.
The reason to loosen slightly first is to overcome friction; But, if you find one loose before tighting; that's reason enough for a closer inspection of the block/ threads.
It's probably a good idea to run a leakdown test.
For grins, try an oil pressure guage. The oil relief valve has been known more not to hold as it ages and BMW changed the design; you're issue could be the opposite and just needs cleaned. Worth a check though.
There are instances of the dreaded gasket seep that were reported early on by the seniorsix and e-12 members.
Mind if I ask where abouts the seep is located? Back of the head closest to the firewall?
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"Slightly" being the keyword...
Any one who wrenches for a living knows the other advice from the manual-
"Never tighten a headbolt w/o cleaning the borehole or you will crack the block"
The question is - Did you prethread all the headbolts 1ST to make sure the bores were clean and the threads were good?
Can you "Slightly" loosen the bolt w/o allowing oil to flow down the threads?
Good luck to you and remember that autohausaz has headgaskets on sale this month for only 33 bucks!
http://www.autohausaz.com/search/[email protected]&year=1972&cid=20@Engine Parts, Seals %26 Gaskets&gid=5412@Cylinder Head Gasket
Any one who wrenches for a living knows the other advice from the manual-
"Never tighten a headbolt w/o cleaning the borehole or you will crack the block"
The question is - Did you prethread all the headbolts 1ST to make sure the bores were clean and the threads were good?
Can you "Slightly" loosen the bolt w/o allowing oil to flow down the threads?
Good luck to you and remember that autohausaz has headgaskets on sale this month for only 33 bucks!
http://www.autohausaz.com/search/[email protected]&year=1972&cid=20@Engine Parts, Seals %26 Gaskets&gid=5412@Cylinder Head Gasket
Hi guys, thanks - will give it a try.
Its not the price of the head gasket its the aggro of changing it! Why is it the more you look after some cars the more trouble they give!
I will hook up an oil gauge and look into the oil pressure relief valve but surely that is only an issue on a very cold morning etc?
Thanks,
Rohan
Its not the price of the head gasket its the aggro of changing it! Why is it the more you look after some cars the more trouble they give!
I will hook up an oil gauge and look into the oil pressure relief valve but surely that is only an issue on a very cold morning etc?
Thanks,
Rohan