Exaust Stud Helicoil

[charlieb01 0]

So I've cross-threaded an exhaust stud thread and just wanted to double check if this helicoil kit is the correct size

 

http://www.amazon.co.uk/Silverline-347853-1-25mm-Thread-Repair/dp/B001C7M4DG/ref=sr_1_5?ie=UTF8&qid=1371993509&sr=8-5&keywords=helicoil

[Tom Fenton 1,542]

Yes, but you'll need a short series drill of the right size to get in there and drill it in situ, even with an angle drill.

[charlieb01 0]

ok thanks, i'll try and find out what size drill I need

[Tom Fenton 1,542]

It will be an odd size as helicoil drills always are. 8.8mm rings a bell but don't take my word as that is off the top of my head.

If you are feeling a bit rough you could don a cowboy hat and then whilst shouting YEE-HAR put your newly acquired full length drill in the vice and snap it in half using a big hammer. Then re grind the end and hey presto you have a short suitable drill for the job.

[Mattr5uk 20 5 Cars]

Is the thread completely shot? I've had joy in past running a thread cleaner or correct sized tap down it after having to sort out same problem.

[charlieb01 0]

Is the thread completely shot? I've had joy in past running a thread cleaner or correct sized tap down it after having to sort out same problem.

 

I think i'ts deaper in the thread because it was going in fine and then when it got tighter it just total loosened and won't tighten.

 

Ok I've been thinking (bad idea) because i'm so tight for money at the moment and with no real equipment like drills (student life :/) so I really cant afford to start renting tools and buying extra drill bits.

 

Using your idea couldn't I just run the tap that comes with the helicoil all the way through and then insert the helicoil instead of having to rent a drill and drill it all out. May be being dumb but desperate times call for desperate measures.

Edited June 23, 2013 by charlieb01

[charlieb01 0]

ignore previous post

[welshpug 1,661]

probably best off putting it back together so its drivable and get it to someone who has the kit to sort it.

[Tom Fenton 1,542]

Using your idea couldn't I just run the tap that comes with the helicoil all the way through and then insert the helicoil instead of having to rent a drill and drill it all out. May be being dumb but desperate times call for desperate measures.

No, because the helicoil will end up tight so the stud won't go back in. Helicoils are great things, but you have to do them properly for them to work.

[Mad Professor 7]

I hate Helicoils, I only use TimeSerts now.

The kits are not cheap, but I have never had a problem with one.

[Tom Fenton 1,542]

Helicoil kits ARE cheap, I have never had a problem with one.

[charlieb01 0]

my neighbour had a right angle drill to my luck so i'm back in business

[MikeC 10]

Mad P i'd agree with ya on the Time Serts, we use them in machine bases.

Helicoils are good too, ya just have to do them right first time or yer stuffed!

The time serts aren't cheap, but sure are worth it in tight spaces.

[charlieb01 0]

anyone have an idea of the price of a thread doctor?