help how do i extract a broken bolt from my intake manifold

[DaNO'S 86 Cutlass]

i have a broken bolt from my thermostat housing stuck in my intake i bought one of those extract kit and drilled a hole in the broken bolt then put the extractor in then i broke that extrator inside of the bolt now i cant drill thru that bolt anymore i also bought a set of left handed drill bits and tried to drill it out and no luck... does anyone have any suggestion or ideas thanks

 

[beermonkey9417]

Re: help how do i extract a broken bolt from my intake manif

if you can get the intake off you, you can take it to yer local machine shop and have them remove it, or drill it and heli-coil it. or you can drill and heli-coil it yer self. it should cost like 30-40 bucks to have the shop do it. good luck!

 

[tc1959]

Re: help how do i extract a broken bolt from my intake manif

if you can get the intake off you, you can take it to yer local machine shop and have them remove it, or drill it and helicoil it. or you can drill and helicoil it yer self. it should cost like 30-40 bucks to have the shop do it. good luck!

That's good advice,take it to a machine shop before you ruin the manifold.

 

[maddog20_20]

Re: help how do i extract a broken bolt from my intake manif

if you can get the intake off you, you can take it to yer local machine shop and have them remove it, or drill it and heli-coil it. or you can drill and heli-coil it yer self. it should cost like 30-40 bucks to have the shop do it. good luck!

x2

Once you break an extractor bit off it is going to take some serious work unless you can get the broken extractor bit out. They are hardened and you will not be able to drill them with a regular bit and hand drill more than likely

 

[CamaroAdam73]

Re: help how do i extract a broken bolt from my intake manif

Machine shop.

Without a drill press it's going to make drilling and tapping that hole accurately and true straight, really hard.

best bet is the Machine shop, that shouldn't cost a dime more than 40$ At the MOST, then about 20$ at the MOST for a good set of intake gaskets + carb and thermostat gaskets.

 

[megaladon6]

Re: help how do i extract a broken bolt from my intake manif

if it's a stock, iron intake, go on craigslist and get an aftermarket Al one.
or, use a MAPP torch to heat up the bolt and touch a candle to it. the wax gets in the little cravices. then try to use a punch and hammer to dislodge the extractor and use the left hand drill bit to try and get it loose.
but i wouldn't bother if you can get the intake off do what they^ said.

 

[stomis]

Re: help how do i extract a broken bolt from my intake manif

How far down is it broken?

Take a welder and start layering tac welds ontop of the broken bolt until it above the surface of the manifold. They put a large nut over the built up weld and weld the nut to it. Then take the bolt out. The nice part about this method is the heat from the welding will completely unfreeze the bolt.

 

[tc1959]

Re: help how do i extract a broken bolt from my intake manif

How far down is it broken?

Take a welder and start layering tack welds on top of the broken bolt until it above the surface of the manifold. They put a large nut over the built up weld and weld the nut to it. Then take the bolt out. The nice part about this method is the heat from the welding will completely unfreeze the bolt.

That's a cool Idea 🙂 I used to do that to remove broken head bolts from 350 Olds diesels.without pulling the head.

 

[Bonnewagon]

Re: help how do i extract a broken bolt from my intake manif

In the future remember that you need to drill the bolt out almost to the threads before trying an "easy out". Drilling a relativly small hole and using a too small "easy out" will break it every time. Begin with a tiny bit and then go up progressivly bigger right up to the threads and then the "easy out' will work as it should.