Cylinder head noise!

[GsXtUrBo98]

I got my car running and It idles fine but when you give it throttle the cylinder head makes a hollow thumping noise....

I just installed bc 272's and did arp's along with the timing belt, ect....

I don't know what this is.. Is my head shot?? It still idles fine and runs good. It just makes an anoying noise and gets louder as the rpm's go up..

Any help on this would be great... I'm so depressed about it :(

[4g63tcrazy]

Hollow thumping noise? Could you explain that better? Are you sure you're oil is full?

[GsXtUrBo98]

Hollow thumping noise? Could you explain that better? Are you sure you're oil is full?

Just hollow thumping... Also there is full oil in there..

I'm not sure how to explain it over the computer besides its hollow thumping that speeds up with throttle and gets louder as it goes, but it sounds fine at idle..

[4g63tcrazy]

Well if it runs and drive's fine just take the car for a drive. See if the noise is still there. Just make sure to pay attention and stop if anything wierd starts to happen.

[GsXtUrBo98]

I did take it for a drive and it ran and drove fine...

[4g63tcrazy]

But the sound is still there? Are you sure you're not going crazy? lol

[sleepydsm]

I heard it. It's more like a loud knocking. Loudness and rhythm increase with RPM.

[GsXtUrBo98]

I dont know what this is...! Tomorrow I have something going on till mid afternoon and then I'm gonna pull the vc off and see if anything is visablly wrong.

If anyone has any knowledge about this please lmk.

[GsXtUrBo98]

Bump for a mitsu member in need!

[4seasons69]

it kinda sounds like you might have a collapsed lifter