#1 crank bearing and #1 cam bearing damage?

[SuperSix]

I seem to remember hearing there's a possible oil pressure issue that can cause the #1 crank bearing and #1 cam bearing to smear?

What would cause damage primarily to just those locations?

 

[Nick Micale]

I seem to remember hearing there's a possible oil pressure issue that can cause the #1 crank bearing and #1 cam bearing to smear?



To me it does not look like an oil pressure/flow problem as there is no sign of oil starvation?

What could be a problem is a timing chain too tight.

Another possibility I have seen is a bent crank snout.

 

[SuperSix]

I seem to remember hearing there's a possible oil pressure issue that can cause the #1 crank bearing and #1 cam bearing to smear?
To me it does not look like an oil pressure/flow problem as there is no sign of oil starvation?
What could be a problem is a timing chain too tight.
Another possibility I have seen is a bent crank snout.

I don't think the timing chain was too tight, someone actually said it looked too loose. The crank is at the machine shop, I will mention to them and make sure they check the snout.

 

[charlief1]

Is that the new one Mark? You weren't kidding about the previous owner. Hope it isn't bent but it may be able to be straightened if it is.

 

[SuperSix]

Yep - the block hole GN. We'll see - It's nothing throwing more $$$ at won't fix.

 

[Nick Micale]

That chain is VERY loose, and could have contributed to the damage.

Even with a tensioner, the chain could have lots of "whip" when letting off the throttle, as well as screw with the cam timing?

These $20-30 chain set are a POS made off-shore with soft gears. They have no place in a performance engine, especially if more than 60#'s of valve spring pressure is used.

They belong in an economy 2 barrel V-6!

This is why I beat on TA Performance to make a link chain set with billet gears after years of seeing these junks sets last less than 5K miles.

 

[SuperSix]

The cam is bad too, like it's a bad casting. It's getting a 208/208 - I was looking at TA for the timing chain - which one if the best for a basically stock with the 208 cam?