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Exhaust manifold studs 

 

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 Post subject: Exhaust manifold studs
Posted: Mon Apr 13, 2009 1:37 pm 
Parts Gopher
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WA, Australia

Hi all,
I have just snapped one of the two studs that bolt the exhaust to the exhaust manifold.
Would there be any reason I couldn't replace this with a bolt? Why do they use studs instead of bolts?
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 Post subject: Re: Exhaust manifold studs
Posted: Mon Apr 13, 2009 2:31 pm 
Getting Side Ways
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Less chance of a stud coming loose than a bolt under heat ( hot & cold cycling) & vibes.

 

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Apr 13, 2009 4:37 pm 
Parts Gopher
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Would I be ok to put a couple of bolts in do ya reckon? I have found some torque washers (those spikey f*ckers) to put on them.
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 Post subject: Re: Exhaust manifold studs
Posted: Mon Apr 13, 2009 5:21 pm 
Getting Side Ways
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you change to bolts when you get extractors so i dont see how it could matter on a standard manifold
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 Post subject: Re: Exhaust manifold studs
Posted: Mon Apr 13, 2009 5:28 pm 
Parts Gopher
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Sweet thats exactly what I wanted to hear :lol:
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 Post subject: Re: Exhaust manifold studs
Posted: Wed Apr 15, 2009 9:08 pm 
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slap a fue spring washers on aswel thats what i did :wink:
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 Post subject: Re: Exhaust manifold studs
Posted: Thu Apr 16, 2009 9:19 pm 
Getting Side Ways
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a bolt will be easier to cross thread though in the ally head, thats about the only significant difference.

 

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Feb 25, 2013 1:52 pm 
Stock as a Rock
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With this topic I'm just wondering what's best to use when putting extractors on, the stock manifold bolts, aftermarket exhaust bolts from exhaust shop or studs??

 

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..wagonstyle..
EF Fairmont Wagon, XR6 motor, 5spd manual, extractors, alloy radiator, custom exhaust, rear leather seats, 18" speedy rims, 2" blocks low springs, shaved tailgate/arial hole and roof racks, ef XR front end
http://www.ozwagons.com

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Feb 25, 2013 2:18 pm 
Getting Side Ways
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wagonstyle wrote:
With this topic I'm just wondering what's best to use when putting extractors on, the stock manifold bolts, aftermarket exhaust bolts from exhaust shop or studs??

I use extractor bolts with a regular washer and a spring washer.

 

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xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Feb 25, 2013 2:43 pm 
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the beat way is to use studs but use brass nuts that way they wont rust and lock up using a bolt only use stainless steel bolts they dont rust either

gassa

 

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Feb 25, 2013 5:03 pm 
Stock as a Rock
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Cheers guys after looking at the studs supercheap had I went to my local exhaust shop and brought extractor bolts and will be getting spring washers tomorrow. While I was there I also brought a couple flanges, gaskets and flange bolts to finish of my exhaust. Just have to extend my cat an inch and weld flanges on either end and it will all be done.

 

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..wagonstyle..
EF Fairmont Wagon, XR6 motor, 5spd manual, extractors, alloy radiator, custom exhaust, rear leather seats, 18" speedy rims, 2" blocks low springs, shaved tailgate/arial hole and roof racks, ef XR front end
http://www.ozwagons.com

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 Post subject: Re: Exhaust manifold studs
Posted: Mon Feb 25, 2013 6:17 pm 
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M10 allen headed screws. Best yet.
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