Extracting a broken stud from an engine case

Using a stud extractor kit to remove a broken stud.

Category:

Howto & Style

Tags:

• broken
• stud
• bolt
• extractor
• extracting
• motorsport
• scooters
• vespa
• kymco
• lambretta
• ez-out
• ezout
• scooterwest

[wafrederick]

The spiral extractors are worthless,the expand the broken off fastner too much and it gets worse to get it out.The straight flute extractors are better

[jcorsaro]

I have used both styles, they have there pluses and minuses. Most of the time I will weld a nut on top of the broken remains. But not every one has access to a good welding machine.

[swa4567]

what did you do when you put the punch on the stud, i couldnt tell if you hit it or what

Thanks

[jcorsaro]

A spring loaded center punch.

[circusboy90210]

I wish it was always so ez

[jcorsaro]

I'll tell you, most of the time it is not that easy. Many times I will plug weld a nut to whats left of the broken bolt or stud.

[super1betel]

where can i get that kit thanks

[mrapala]

I've just broke stud in valve cover using torque wrench (!) don't know how it happens. perhaps defective stud. anyway wish me good luck :D

[carfanatic89]

You would be surprised how many ppl don't know about this tool, It has saved my ass many times before, I snapped a intake manifold bolt on my bosses truck. Drilled and and had it out in about 15 mins. He couldn't believe it was that simple. lol

[circusboy90210]

I figured out why this was so hard for me accomplish, I did not have drilling oil on hand. as counterintuitive as it seems oil actually helps the drilling process . other than that it was actually really easy. the first time this happened the reverse twist drill bit pulled it right out of the hole.