Exhaust Manifold Studs

[mr_mate]

i pulled my manifold off my 20det the other day and had a total of 6 snapped studs (f**king bulls**t) so i went about drilling them out and managed to get 5 of the bastards out but the one closest to the firewall just wont budge. iv snapped an ezi out in there already and made a mess of the hole when drilling it again and i dont want to snap another ezi out in there. i dont have the funds (uni student) to pay someone else to do it for me.

so the big question is: is it an alright idea to leave it alone and just have 11 new studs holding it on with a bit of manifold cement, or will i loose heaps of grunt from escaping fumes?

any help would be appreciated.

im also from NZ (the NZ forums suck balls) so no point recommending me to anyone in AUS. cheers

[DanShirts]

Get it out. There are posts all over the internet on this.

I usually just heat the stud up, then use a small left-handed drill bit. Or if the stud is hanging out, you can weld a nut on the end. Always works for me.

[aerofocker]

its best practice to get it out of there,seen as you have broken an easy out in the stud the option of drilling it out is limmited to useing a pencil grinder with a high speed rotary burr,if you have one of these you will be luckey lol the easyout should be too hard for a regular drill bit, plan b as stated above,and your best option in my opinion is to place a nut over the hole and weld through the hole in the nut on to the snapped stud,just make sure you chip the slack off periodically if your doing a stick weld easy outs are genraly a fail when it comes to these things for starters by there very nature they are a smaller diameter than the bolt to be extracted so inherintly weak

Edited March 24, 2010 by aerofocker

[mad082]

before trying anything again, go to your local car parts place. they should sell a product that comes in a can which you spray on the stud to freeze it. this makes the metal shrink and will make it easier to come out. in this case, spray it into the hole you have drilled for the easy out. be generous so it cools down as much as possilble. then stray away try the easy out.

[grigor]

Here's a few suggestions.

First throw your Ezi-outs in the bin. They cause more grief than they're worth. In future buy a decent stud removing toolkit or pay someone.

Next you have to be dead sure that your broken Ezi-out was drilled true to the stud, not half in the stud and half through the head.

Now MIG a suitable sized plain washer over the broken stud. You'll be able to get a few good hits using a MIG.

Then MIG a nut to that washer.

Now you're ready to unscrew.

The heat from the welding will loosen the most stubborn stud, but if the washer/nut snaps off, just do it all again.

Admittedly that stud will be an absolute bastard to get at, but the manifold gasket will blow without all the studs installed.

[Curmi]

yeah +1 good advise

[OMGGTR]

yeh i got 2 snapped studs on number 6 cyl fkn depressing coz its to much work to do to my daily ... i wont be able to get to work so i gota leave it as is..... if ne1 can do it in less than 1 day ill happily pay u...

[Curmi]

call a guy to come do it I forgot his

name, he in yellow pages and comes to your house and does it quick as, I'll try remember his name,

[jrh001]

Here's a few suggestions.

First throw your Ezi-outs in the bin. They cause more grief than they're worth. In future buy a decent stud removing toolkit or pay someone.

Can anyone recommend a decent stud removing toolkit? I've tried Ezi-outs (actually an equivalent sold at Bunnings). 

An exhaust manifold stud has broken off below the surface. I can drill it easily but the remover just won't bite. (Engine is 25+ years old.)

JohnH

[mystery_kid]

and just fyi no having 11 studs won't work properly

you will get a leak where the missing stud is

[jrh001]

and just fyi no having 11 studs won't work properly

you will get a leak where the missing stud is

Thanks, 

The engine was out of a running car - my fault when I bought it because I didn't notice the broken stud. The L24E only has two studs, one at each end of the engine, the rest is held in by bolts (all came out no drama).

Hoping that someone knows of a good remover kit. 

JH

[jiffo]

Can anyone recommend a decent stud removing toolkit? I've tried Ezi-outs (actually an equivalent sold at Bunnings).

An exhaust manifold stud has broken off below the surface. I can drill it easily but the remover just won't bite. (Engine is 25+ years old.)

This company has the style of extractor you need, but it's always best to buy a name brand not Chinese stuff.

P&N, etc, names that have a reputation in the tool world.

http://www.tetools.com/catalogue.html