Broke Crank at #4 journal
- Thread starter ScreaminDuramax
- Start date
Just passed the 10,000 mile mark on my engine last night. Shredded a tear 
unfortunately that's the most ill get to be able to drive it untill who knows when.
unfortunately that's the most ill get to be able to drive it untill who knows when.
Just passed the 10,000 mile mark on my engine last night. Shredded a tear
I'll babysit it for you! :hug:
Don't laugh....I bet there are a lot of guys who think the same way.
X2 Tom! When you build these things for a living it is real troubling when they fail for no reason at all.
I guarantee you I will throw a fit like no other..I have seen my 3 yr old do it, so I know exactly what to do lol!
Interesting that yours broke at the #4 with a 475 over stock. Mine broke at the #4 3 weeks after I installed the 475 (over stock).
Would love to see some pics.
Would love to see some pics.
No, not mine. I had 175,000 miles on mine when it broke. Everything in my motor looked perfect/like new, spectacularly magnificent. Except for the new 2 piece crankshaft.
Same with my motor, everything looked great. pistons looked awesome, cylinder walls looked in perfect condition, we will find out what my bearings and crank look like when I pick it up.
That sucks. Sure wish someone could/would get to the root problem & fix it. I'd be absolutely a wreck if I had a built engine let go after spending all that cash on it. Wow!
In my experience the LB7 cranks seem to be the lesser of the evils on breakage. The big question is seasoned crank vs new crank? Dealing with many core engines and not knowing the history, we have gone the route of new LB7 cranks in our builds with good success. I personally have not broken an engine with a new LB7 crank with an alt. firing order cam in our race engines since this combo has been available. Before that, I cried a lot!