Knock piston slap or lifters?

[1g8420a]

I have a 97 gs that has a knock issue I have built this engine twice and have so much money tied up in this car i will lose thousands if i sell it. I don't have the cash just to simply get a new motor again ( this is the 2nd one) My first mistake was buying a crate motor from DSM Graveyard. I have some sort of knock or lifter piston slap on my car. I am sure people can say its a rod but the motor has 4-600 miles since rebuild here is a video. Let me know what you guys think. Or if you have any suggestions of how get into a more through diagnosis. thanks

[ame=http://youtu.be/Sc9rEZsTFcs]Knock Piston slap or lifter tick - YouTube[/ame]

 

[grothe3297venge]

Sadly, it doesn't sound like lifter tick to me (seemed to get louder as you opened the throttle a bit). Should pull the pan and see if there are any shavings in the pan. Be hard to diagnose from just sound unless someone has heard something quite similar.

 

[Insane20]

My suggestion is take it to who ever build it and tell them to fix it or refund your money. If its got 400 miles on it it shouldn't have any noise.

 

[1g8420a]

Sadly, it doesn't sound like lifter tick to me (seemed to get louder as you opened the throttle a bit). Should pull the pan and see if there are any shavings in the pan. Be hard to diagnose from just sound unless someone has heard something quite similar.

Here is a video of the car at operational temperature Most of what you hear on this one is the TOB.

[ame=http://youtu.be/7Y11FFzDb3g]Knock piston slap lifter tick. Part 2 - YouTube[/ame]

 

[gieri002]

Agreed, that doesn't sound like lifter tick. I'd also recommend you take a few minutes and drop the oil pan so you can check your bearings. You could potentially avoid a lot of damage to your crank by doing this.

 

[92AWDHX40]

First mistake was the graveyard, good luck getting it taken care of by then cut your losses and rebuild by a well known trusted shop. that's my opionon.