Messed up cam today
Melting Slicks
Joined: Mar 2006
Posts: 2,248
Likes: 67
From: Warrington PA
Finalist 2020 C4 of the Year - Unmodified
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
You should be able to use a left hand drill bit on a small pneumatic drill and get it to twist out, if that don't work I'd think an easy out would. Good luck with your project And try to remove the bolt first. This isn't the first time it'd happened to a forum member, the search function might prove invaluable.
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
After clicking the image to back the picture out, I can see your dilemma. I hate to tell you this, but you are going to have to remove the engine and replace the crankshaft as mentioned in the above post. The bolt is twisted off in the crank snout. You can try an easy out but if it twisted off removing it, that's it. A new crank means new bearings so you might think about a rebuild.
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
Can you take another picture but at an angle so we can see exactly what happened? Did it have the 7/16" NF bolt and real thick washer in it and did you remove it before using the puller? The snout of the crankshaft should have a deep 7/16" NF tapped hole in it and from the picture it looks like it was never drilled and tapped. Or my eyes are playing tricks on me.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
I'm afraid you will need to pull the crank to get that out. A machine shop may be able to get that out once it is out of the motor but the chances of getting that out in the car are very little.
Burning Brakes
Joined: Jun 2011
Posts: 817
Likes: 11
From: lewisburg wv
Burning Brakes
Joined: Dec 2008
Posts: 971
Likes: 45
From: Middlesex NJ
What does the end of the puller look like now? It could be that you got the bearing end of the puller stuck in the snout. From the marks on the crank the puller had the pusher bearing on the end of the lead screw at some point.
Is it the puller bearing that came off the puller lead screw and got stuck in the crank?
You might be able to get that out of there and tap the threads... but its a hard place to work on in the car.
Good luck. Bummer of an issue.
Is it the puller bearing that came off the puller lead screw and got stuck in the crank?
You might be able to get that out of there and tap the threads... but its a hard place to work on in the car.
Good luck. Bummer of an issue.
Thread Starter
Instructor
Joined: Jan 2015
Posts: 200
Likes: 15
From: shreveport Louisiana
What does the end of the puller look like now? It could be that you got the bearing end of the puller stuck in the snout. From the marks on the crank the puller had the pusher bearing on the end of the lead screw at some point.
Is it the puller bearing that came off the puller lead screw and got stuck in the crank?
You might be able to get that out of there and tap the threads... but its a hard place to work on in the car.
Good luck. Bummer of an issue.
Is it the puller bearing that came off the puller lead screw and got stuck in the crank?
You might be able to get that out of there and tap the threads... but its a hard place to work on in the car.
Good luck. Bummer of an issue.
Limping across the line
Joined: Oct 2002
Posts: 5,299
Likes: 109
From: Peoria Az
If you can get that piece of the puller out. Go ahead and re tap it. Then use a ARP bolt when the balancer goes back on.
if its FUBAR your cheapest solution is going to be Pull the crank and find a Machine shop that can do EDM. They will be able to burn that bolt out without harming anything else.
FWIW your Puller should not have threaded into the crank snout.
On the end of your HB puller there should have been a provision for a large foot to push against the end of the snout.
Like this Balancer puller
if its FUBAR your cheapest solution is going to be Pull the crank and find a Machine shop that can do EDM. They will be able to burn that bolt out without harming anything else.
FWIW your Puller should not have threaded into the crank snout.
On the end of your HB puller there should have been a provision for a large foot to push against the end of the snout.
Like this Balancer puller
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
If you drill the hole with a left hand drill bit, there's a good chance that when the bit binds, it will unscrew the broken bolt, if it dont you are planning to easy out it any Way.