Odd noise while cranking

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Apr 7, 2026 | 01:55 PM

Guitarshredder

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Odd noise while cranking

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

Apr 7, 2026 | 02:16 PM

02EBC5Z06

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From: Massillon, OH

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.

Apr 7, 2026 | 02:18 PM

Guitarshredder

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

Apr 7, 2026 | 02:19 PM

Guitarshredder

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

Here it is running

Apr 7, 2026 | 02:25 PM

Guitarshredder

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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)

Apr 7, 2026 | 02:27 PM

02EBC5Z06

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Running it sounds fine.

Apr 7, 2026 | 02:30 PM

Guitarshredder

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Quote:

Originally Posted by 02EBC5Z06

Running it sounds fine.

Exactly so idk what that could be?

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Apr 9, 2026 | 09:56 AM

Guitarshredder

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Staging Lane

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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?

Apr 9, 2026 | 12:28 PM

#10

RB04Av

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

Apr 9, 2026 | 01:17 PM

#11

Guitarshredder

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Quote:

Originally Posted by RB04Av

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! 💙