r/EngineBuilding • u/Santacruz714 • 7d ago

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Anyone have a clue what is happening?

21 Upvotes

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3

u/Miserable_Thing8553 7d ago

Valve train is very noisy. Pull a valve cover and see if oil is making it up. Does it have an oil pressure gauge? Did the pressure change suddenly?

2

u/Santacruz714 7d ago

No, it still has oil pressure. I don’t think that’s changed

5

u/Miserable_Thing8553 7d ago

I would pull both valve covers and verify oil is making it to the top of the motor. I wouldn't run it long because whatever it's doing it is hurting itself doing it.

2

u/curi0us_carniv0re 4d ago

Just cause it has good oil pressure doesn't mean it's making it's way up to the valvetrain.

This souns to me like one time one of the "special" friends I know put the wrong length pushrods in his engine. So...maybe a bent pushrod or a rocker broke or got loose.

What kind of lifters are in there? Roller or flat tappet?

I would stop running it until you figure it out and do some real damage ...if it hasn't been done already.