stud install for cylinder head

stud install for cylinder head

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Inline__engine

Original Poster:

195 posts

135 months

Wednesday 28th September 2016
quotequote all
What is the correct approach to installing studs for exhaust manifold, intake manifold and rocker cover studs? studs are zinc plated of sorts studs into alloy head.

So finger tight with loctite or no loctite or something else like antisieze?

or nip them up a bit to stop them backing out when undoing nuts throughout servicing life etc?

something else?

im not talking about head studs to the block those usually come with install directions.


Martin350

3,775 posts

194 months

Wednesday 28th September 2016
quotequote all
I'd use the double nut method.

If you're not familiar with it, put two nuts on the stud and lock them together with two spanners.
Then wind the stud in with the outer nut, then with the two spanners unlock the nuts from each other and wind them back off.


CrutyRammers

13,735 posts

197 months

Wednesday 28th September 2016
quotequote all
^^^ that's what I've always done.
I usually copper grease them as well but I've never actually had cause to undo the ones I've put in so no idea if it's good or bad. I have had to drill several out though so I figure better safe than sorry.

Inline__engine

Original Poster:

195 posts

135 months

Wednesday 28th September 2016
quotequote all
i'm familiar with double nut method it wasnt the actual screwing them in part that i was after help with. how tight are they supposed to be screwed in? bottom them out?

KiaDiseasel

83 posts

90 months

Thursday 29th September 2016
quotequote all
It's not very critical how tight you fit studs of that type. Just screw them in until the unthreaded bit bottoms out and then a further light nip up. I also agree with the advice about a light smear of Copaslip or grease. It helps stop them corroding in situ.

Steve_D

13,737 posts

257 months

Thursday 29th September 2016
quotequote all
I have always bottomed them or until the thread binds followed by nipping them up.

However, I do understand the question as I have seen ARP instructions saying something like taking them down to bottom then backing out half a turn.

Steve

CrutyRammers

13,735 posts

197 months

Thursday 29th September 2016
quotequote all
Tighten until the thread strips, then back off half a turn...;)
I normally just go hand tight, and have never had any problems.