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1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 3:58 pm
by crunk81us
Ok So i have a 1hz that i have JUST got a turbo working on.. and guess what.. exhaust manifold gasket has blown
So now i either pay someone for a days labour to replace a cheap part. or I try it myself.
My only concern is that I will encounter a broken stud or break one trying to get it off.
What are my chances of doing it without a hitch.. 04 hzj105 with 240,000kms
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 4:13 pm
by cruzinnboozn
crunk81us wrote:My only concern is that I will encounter a broken stud or break one trying to get it off.
What are my chances of doing it without a hitch.. 04 hzj105 with 240,000kms
Very high....
Spray lots (I MEAN LOTS) of WD40 or similar and let sit for as lomg as possible....
I bought a stud remover on the off chance i would need it ......and i did, i broke 4 studs all in the same spot about 2cm from the block face...
The stud remover did its job and i was done, pretty soon after
I replaced all my studs when i did it.
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 5:02 pm
by 80's_delirious
try your luck. I have removed and replaced mine with out a drama. some of the studs came out instead of the nut coming off, but no real problem.
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 5:20 pm
by crunk81us
so i just took the heatshield off.. first two studs broken off (obviously a long time ago) and missing
and of course that's where i sprang my leak..
the rest are SOOOO corroded..
Looks like i have a task ahead of me
I am not real flash at getting broken studs out.. especially when they snap off in the head (never done one like that before) are there some tricks i can use?
Last time i broke one off I tried easy (hard) outs, then vice grips, then swore, then welded a big nut to the stump that was left, the whole stud was glowing hot , then i poured water on it to cool it down, it came out really easy after that. Almost finger tight.
Wondering if i just jump the gun and do similar to all the studs (that are left) and replace the lot?
after looking I reckon I will break off more than 50% of them if i just try to undo the nuts.
I have :
gasless mig welder
lpg blow torch
tap and die set (not sure if i have the right sizes) and last time i used one was at school 14 odd years ago..
various drill bits
buying a drill lol lost my last one :(
I think i have to give it a go.. I cant justify the dollars (to myself or the handbrake) to pay someone to do it.
While it's off i can do the egt sensor.
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 6:19 pm
by 84sloth
hey mate the best way i find to get studs out is centre punch the middle of the stud then i find an old flat head screwdriver and get a drill bit thats a bit smaller the the driver. drill it out then drive the driver in and lock some vise grips onto it and it usually comes out sweet as. i never use easy-outs incase they break off. then u are screwed
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 6:37 pm
by crunk81us
oh yeh that makes sense.. an old (but good.. not cheap crap) screwdriver i would imagine..
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 6:41 pm
by RAY185
You may have some luck with this:
http://www.loctitefreezeandrelease.com/" onclick="window.open(this.href);return false;
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 7:04 pm
by crunk81us
I just bought a competitors can of "freeze ur nuts off" great minds think alike ?
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Mon Sep 27, 2010 9:49 pm
by ledgend80
crunk81us wrote:
I just bought a competitors can of "freeze ur nuts off" great minds think alike ?
or my favourite is bolt off. it is good stuff, got a bit of a funky smell but does the trick
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Tue Sep 28, 2010 5:17 am
by 84sloth
crunk81us wrote:oh yeh that makes sense.. an old (but good.. not cheap crap) screwdriver i would imagine..
yeah an old stanley 1 does the trick for me everytime lol. exhaust studs. about 15 axle studs when i had a bent axle.. and couldnt figure out why they kept breaking
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Tue Sep 28, 2010 5:42 pm
by biegetroopy
replaced my exhaust manifold when i did turbo sprayed with lots of inox when hot and then when they cooled down all came out the next day easily so easy they actually came out of the head before the nuts came loose
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Sat Oct 30, 2010 4:05 pm
by thrashlux
buy a cobalt dril bit for the job as they eat hardend steel (studs)
what i do is i drill a small hole with cobalt then i have a set of reverse drills (the actually drill in reverse) 9 times out of ten they grab (due to the smaller hole i am now drilling into) and screw the busted stud out they are absolute gold if that fails then you are left with a hole the right size for an easy out
or (if ruff a screw driver )
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Sat Oct 30, 2010 7:16 pm
by Z()LTAN
heat them for sure.
Re: 1hz replace ex manifold gasket.. will i break studs?
Posted: Sun Oct 31, 2010 7:36 am
by Turboshop
Just a tip for removing the manifold (before breaking any studs)
The way I always do them, 1st wire brush all the exposed threads clean, spray with inox.
If you haven't got a rattle gun, with a breaker bar and rubber mallet crack each stud just about 10 deg, don't take them out all the way out one by one, that just makes each one harder as u go. The quick hard impact of hitting them with the mallet rather than slowly turning them works much better. That's why rattle guns work so well.