Cracks in LA and Magnum heads....Have you tried running them anyway?

[RustyRatRod]

The Roadkill guys SWEAR by that”K-Seal” stuff.

That's for stopping coolant leaks. It won't work for cracks in the valve seats.

 

[junkyardhero]

The Roadkill guys SWEAR by that”K-Seal” stuff.

i can attest to that, K seal works.

 

[MOPAROFFICIAL]

I sold a set of X heads to a guy who had them magnafluxed. They found a couple of cracks near the spark plug holes. I gave him back his $$ and told him to pitch them....Not sure if he did, or used them anyway.

A lot of them are cracked at the spark plug hole. It about never spreads much more and you can can try grinding the boss down. I'd have used them.

 

[360duster]

we ran already cracked Magnum Heads for a while. Pretty sure the Valve seal is not perfect, but otherwise there was no trouble.

Michael

 

[Michael Harrington]

I had my machine shop build my short block. I posted the receipt on this forum. I also tasked them with finding a set of usable Magnum heads. By doing this I had 2 professionals looking for me. The machine shop and their supplier. They obtained for me a pristine set of castings which were disassembled and cleaned. I paid for them and am almost halfway done with a common sense port and polish. I'm not saying how I'm doing it is cheap. But I need good heads and am not buying Chinese EQ heads and am not interested in aluminum heads even though they are great performers. A shop 30 miles north of me drills Magnum heads for the LA intake pattern and I will do this. I already have new valves and Hughes valve springs and hardware.