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why exhaust studs?
Dangle_kt - 22/4/10 at 04:51 PM

why not just bolts?

just curious.


blakep82 - 22/4/10 at 04:55 PM

always wondered this myself. was going to change mine to cap head bolts...


jollygreengiant - 22/4/10 at 04:57 PM

Have you EVER tried to line up a springy stainless steel multi branch exhaust manifold and THEN put bolts in.

Trust me STUDS rock.


blakep82 - 22/4/10 at 05:01 PM

i left one stud in


Mark Allanson - 22/4/10 at 05:02 PM

Simple, its to make fitting a manifold so much more difficult to fit when its in a confined place.


boggle - 22/4/10 at 05:04 PM

i allways thought it was to do with the heat expansion, contraction thing???


55ant - 22/4/10 at 05:10 PM

as above lining up and fitting gaskests, saying that i have used bolts for my inlet manifold.


Guinness - 22/4/10 at 05:10 PM

To make use of all those mountains of stud extractors?


Benzine - 22/4/10 at 05:13 PM

it's got something to do with clouds


Andy W - 22/4/10 at 05:17 PM

I wouldn't have thought you would want to be removing bolts from your head to often, especially if it's alloy.

Andy


Paul (Notts) - 22/4/10 at 05:33 PM

as above -- alloy heads and bolts


v8kid - 22/4/10 at 05:46 PM

How often do you take your manifolds off

I've got bolts on mine but will be converting to studs 'cos of allignment probs already noted above but it's one of those jobs well down on the list


bi22le - 22/4/10 at 06:42 PM

I always thought it was due to heat. Then again I have never tried to line up a gaskit and manifold!


dhutch - 22/4/10 at 07:43 PM

quote:
Originally posted by Andy W
I wouldn't have thought you would want to be removing bolts from your head to often, especially if it's alloy.

This is the main reason for studs of bolts in any application.

You wear out the nuts first (cheap), then the studs (not overly expensive) but never the threads in head (really very expensive) unless your really ham-fisted with changing the studs if you ever need to.


Daniel


nitram38 - 22/4/10 at 08:08 PM

Another reason if you use bolts that are too long they bottom out before pulling the manifold tight enough to seal.
Studs bottom out and the nuts take up any differences.