Can the crankshaft be saved?
Thread Starter
Staging Lane
Joined: May 2005
Posts: 92
Likes: 0
From: Houston, Tx
Can the crankshaft be saved? A friend was doing an underdrive pulley swap on his truck and had the pulley bolt break off inside the crank, used an easy out to pull out the bolt but now has to rethread the inside of the crank. What size would it be? I've never heard of something like this, i thought it only happened with head studs
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
I would drill it and tap it one size bigger. Sounds like you should make friends with a guy at a machine shop and offer him 50 bucks to come to ýour house and do it after work.
Was the car ever worked on before in this area? A lot of guys use the wrong procedure and mess up the threads. Some find out right away and some after the next removal.
That aside, what condition are the threads now? Are they completely wiped out or are they still in there? I wouldn't use a tap, but rather a thread chaser which doesn't remove material from the threads. This is repairable in the car, the method depends on the current condition of the threads.
That aside, what condition are the threads now? Are they completely wiped out or are they still in there? I wouldn't use a tap, but rather a thread chaser which doesn't remove material from the threads. This is repairable in the car, the method depends on the current condition of the threads.
Trending Topics
If threads are there use them and loctite. Or call it a loss and by a new crank. Just sold mine used for 125 shipped in great condition. If you tap if yourself and the angle is off a bit. Bet the balancer will not be 100% trued and you will weeble wobble. Take to machine shop if anything, buy a new crank, or use threads if still there and locktite.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Enthusiast
Joined: May 2008
Posts: 537
Likes: 1
I have had a helicoil in an old 6223 crank for about 20 years with no issues. Should have machine shop do the work to get it right but these things work great when applied correctly. If you oversize, will have issues getting correct balancer bolt.
