engine failure cause

[djais1801]

So it turns out that when my harmonic balancer went bad, the bolt holes were worn, so the bolts weren't staying in, caused the spun bearing in the main cap. The connecting rods were not damaged.
I was able to find a 400 block for $200 which is better than having my block repaired.
Still gonna run me $3000+ to get her fixed...ughhh

 

[tpodwdog]

youll be aiiiiiiiiiiight!

 

[djais1801]

said it should be about 4wks

 

[Ron 73]

Hopefully it will be a fast 4 weeks!

 

[djais1801]

The engine builder said that the exhaust valves on the heads were all corroded/pitted. I am wondering if the previous owner used a marine engine? what could cause pitting/corosion in the exhaust valves?
Anyway...I should have the engine back this week and it will be put back in next week.

 

[70rr-brian]

Maybe cracked head gasket and anti freeze in the combustion chamber... But I sincerely doubt that would be the case for ALL the exhaust valves...

 

[Sixer]

An engine that sat a while in humid conditions with no exhaust on at all. Intake may be stuffed with rags, but no-one does the exhaust.