cvh manifold studs

[brainbug007]

Wanted to replace my inlet & exhaust manifold studs, can anyone confirm that these are just m8 by 50mm or are they some sort of imperial size?

[deezee]

Defiantly M8. I got exhaust studs from Burtons.

[brainbug007]

Ya I've just bought some from there as well. I like how they have a torx bit at the top to make getting them in/out easier. Is it worth trying to get the old studs out that are stuck or just leave them even if they're rusted?

[deezee]

If they are just rusty and untidy, I'd soak em in wd40 and wire brush them. Then run a die over the thread to freshen them up. If they are in need of replacing, just soak them in wd40 for a day before trying to undo them.