JohnN
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| posted on 1/3/05 at 08:05 PM |
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New manifold studs
Just got some new nuts and studs for the pipe joint to a cast manifold. The nuts are either copper, or copper plated..
Is there a proper method to install the studs? or are they put in, finger tight and then the nuts whacked on??
The copper nuts are squeezed at one end to make sure that they are tight to install??
Anybody have the experienced view??
JohnN
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Mark Allanson
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| posted on 1/3/05 at 08:08 PM |
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Use 2 ordinary nuts locked together to wind the studs into the head, unlock them and wind them off.
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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rusty nuts
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| posted on 1/3/05 at 08:18 PM |
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Also works well as a cheap stud extractor as long as studs are not to tight
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JohnN
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| posted on 1/3/05 at 08:43 PM |
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That makes sense, thanks - that's the exhaust sorted!
John
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clbarclay
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| posted on 1/3/05 at 09:50 PM |
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Nuts are probably made of brass, looks very similar to copper.
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MikeR
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| posted on 1/3/05 at 11:46 PM |
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could you put one of the studs in a micrometer?
I've just bought some from burton. The ones i removed are 7.75mm the ones they've sent are 7.85mm and ........ don't fit !
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JohnN
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| posted on 2/3/05 at 12:09 AM |
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MikeR, my studs are for a 1991 dohc 2 litre manifold and are 10mm metric thread, they measure 9.8mm at the centre where there is no thread.
Bought them from Ford, 23p each
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DarrenW
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| posted on 2/3/05 at 03:30 PM |
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I tapped the holes out in the head to make sure they were in good condition and clean. Sprayed them with electrical cleaner to remove debris. Dries
the holes out. Small amount of stud lock and wound studs in using the two plain nut method.
The nuts are compressed at the ends as a way of locking them on like with nylocs (i call them bugger nuts as the end looks like it has been squashed
or buggered (ie damaged - not in the sexual sense!! ). I thought they were copper as well - certainly look like copper.
So you paid 0.23 each, approx 10 of them, total £2.30. Thats quite an investment for a dohc! Sorry, couldnt resist - i get stick for using SOHC as
well (boat anchor i think the term is!).
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clbarclay
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| posted on 2/3/05 at 04:55 PM |
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The nuts are most likely brass which is an alloy made from copper and zinc. brass looks very similare to copper at a glance. Its is what was always
used for car parts like nuts and radiators.
Copper on its own is too soft and would deform far to easily.
Copper is quite often used for pipes but the fittings on the ends of pipes are often brass.
[Edited on 2/3/05 by clbarclay]
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