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Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:34 pm
by connorb16
Hi Guys, im looking to replace my exhaust manifold gasket over the weekend just wondering if anyone would know the torque settings , its just ive a bad time in the past with studs snapping on a vauxhall i had so im a little worried this time round , would be gratefull for all advise , thanks
Re: Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:43 pm
by davecave
I had mine done by Bartley BMW in SOuthampton a few months back - give them a call - I found them very helpful.
www.bartleyuk.com
Re: Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:44 pm
by maxfield
Bit of a difference between a vauxhall and BMW
Re: Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:48 pm
by daimlerman
My book says 16FT/PD.But while you have the manifold off,check that the face is flat...the 6 cylinder one has a nasty habit of going banana shape,pulling studs out...
Re: Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:57 pm
by Simon13
maxfield wrote:Bit of a difference between a vauxhall and BMW
not really most old ehaust studs have a nice habit of snapping
My advice is soak all the nuts/studs in wd40 for a few days, weeks, years if you want before you do it. Remove it with the engine at running temp too, but mind your fingers!
Re: Exhaust manifold torque settings, advise needed.
Posted: Wed May 30, 2007 4:59 pm
by Theo
Manifold studs are still shite though
Best bet is to give all the studs a good helping of freeing oil a day or so in advance. Plus Gas is much better than WD40, so if you need some freeing oil give it a go. Some people prefer to go at the nuts when the engine is warm - probably helps a little. The nuts are 12mm and prone to rounding or worse, the stud shears. Best technique is to sharply untighten the nuts with one brisk movement (use a 6 sided socket) of the ratchet/breaker bar, it's likely to take the stud out along with the nut, I found that if you gradually increase the anticlockwise force on the ratchet/breaker bar you are more likely to shear the stud.
Apologies if the above is poorly explained
Re: Exhaust manifold torque settings, advise needed.
Posted: Thu May 31, 2007 11:38 am
by connorb16
Hi, well i had a crack at it today all seems to have gone ok ie no studs snapping , unable to locate my torque wrench so i just did them up tight then just a little more for good luck , will re check them in a week, thanks for all info guys.