Took gearbox of today and snapped 2 of the 6 downpipe nuts off there is still about 5mm sticking out treid plus gas /wd40 .Then mole grips but it just chews the stud thread up .What are they like to drill out thanks taff.

if you've already got the box out, maybe remove the downpipes so you can get them in a vice etc.?

They are a bugger to drill out, took me a dozen drill bits and a couple of hours to get one out.

Ive got the downpipes off but the bolt has snapped in the turbo elbow didnt want to remove that incase i snapped more bolts.

Remove the turbo elbows from the car and with a thin angle grinder wheel cut two slots into the elbow in a closing V shape where the stud is located and you will be able to get the stud out then, when reassembling use long nuts and bolts with good washers on, sounds odd but is so much easier than drilling out.

 

Jeff TT

They are a bugger to drill out, took me a dozen drill bits and a couple of hours to get one out.

 

Not that bad actualy, get some good quality cobalt bits (stubbies for the first few sizes), run your drill at a slow speed and work up from 3mm to 10mm in 4 or 5 stages.

It took me around an hour a stud.

 

Of course I bow to Jeffs superior experience, but just wanted to say from recent experience, drilling out isn't that bad a job once you have the right drillbits, just a little time consuming :)

if you've already got the box out, maybe remove the downpipes so you can get them in a vice etc.?

 

I meant remove the elbows! oops.....

Not that bad actualy, get some good quality cobalt bits (stubbies for the first few sizes), run your drill at a slow speed and work up from 3mm to 10mm in 4 or 5 stages.

It took me around an hour a stud.

 

Of course I bow to Jeffs superior experience, but just wanted to say from recent experience, drilling out isn't that bad a job once you have the right drillbits, just a little time consuming :)

 

Mines a none turbo lol, so were a bugger from the manifold :thumbdown:

Mine too Mr G :)

The worst bit was were I had to lay to see what I was doing, goggles a must !

Remove the turbo elbows from the car and with a thin angle grinder wheel cut two slots into the elbow in a closing V shape where the stud is located and you will be able to get the stud out then, when reassembling use long nuts and bolts with good washers on, sounds odd but is so much easier than drilling out.

 

Jeff TT

 

 

:thumbup: thats the way i sorted mine. i snapped 2 drill bits and wasted about half an hour and got no where with just the first one!