Can anyone help identify this noise? This is a fresh build, engine runs fine just has this odd noise. Gen 3 crank, gen 4 rods and wiseco dome pistons
https://drive.google.com/file/d/1KyT1YDxb9WYgAqjtIX1wiEmTIrCXd8EA/view?usp=drivesdk

 

So for one, it sounds like you have no compression on a cylinder or two.. But then it also sounds like a lifter squawk like when they get turned sideways on the cam.

What are the other details of the engine.

 

Cadillac racing lifters,polluter v2 cam, wilks 243 heads stock bore everything is new minus the rods and pistons

 

https://drive.google.com/file/d/1hCm...w?usp=drivesdk

Here it is running

 

Also wanted to note I have coolant coming from a header bolt near cylinder 3. Idk if its a blown gasket or cracked head, no water in oil and that happened after first drive,temp got to 230 once(had air in the system)

 

Running it sounds fine.

 

Exactly so idk what that could be?

 

Anyone know what it could possibly be?

 

https://drive.google.com/file/d/1cUZ...w?usp=drivesdk

https://drive.google.com/file/d/1cer...w?usp=drivesdk

Here's a few more where you can hear it.

Anyone know what it cou possibly be?

 

Sounds like a flex plate issue. Loose ring gear or some such.

 

I believe you're correct, I've thought the same thing and wanted to have a few other ears hear it and see what they thought. Thanks everyone i really appreciate it! 💙