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Cracked head

moostang
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Wild and Free

Wild and Free

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No difference in 24v heads. Where is the head cracked at, it is not uncommon for heads to crack? How did they find the crack, magnaflux or ultrasonic x-ray? magnaflux isn't always a real good indicator, lots of good parts are thrown away dur to it, UTI testing is the best and most accurate way of looking for cracks.If it is truely cracked I would find out where before looking for another one, there are non critical areas that would still deem it useful.

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moostang

moostang

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No difference in 24v heads. Where is the head cracked at, it is not uncommon for heads to crack? How did they find the crack, magnaflux or ultrasonic x-ray? magnaflux isn't always a real good indicator, lots of good parts are thrown away dur to it, UTI testing is the best and most accurate way of looking for cracks. If it is truely cracked I would find out where before looking for another one, there are non critical areas that would still deem it useful.

He said in the exhaust valve area. Not sure how they checked it but I am going to stop in and have him show me where and how they found it.
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moostang

moostang

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I found a local shop that can do more checking on the head. Said they can even pressure test it. If I do need a new one the can get new cummins (not rebuilt) with all the valves for around $1800 which isn't bad compared to most rebuilds.

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moostang

moostang

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It is cracked on almost all the exhaust valve seats, into the combustion chamber. The second place said about what Napa did, it may not leak but will brobably get worse. It is very hard to find used ones in my area only ones I find are far away and no garantee they are good. Ordered a new one, should be here by next weekend.

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JOHNFAK

JOHNFAK

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I found a local shop that can do more checking on the head. Said they can even pressure test it. If I do need a new one the can get new cummins (not rebuilt) with all the valves for around $1800 which isn't bad compared to most rebuilds.

Whoa I'd go aftermarket at that price
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JOHNFAK

JOHNFAK

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Rebuilt aftermarket are around $1500 so I went with a new one.

For a bit more than the new one you can get some porting done as well ................. but I understand wanting a new one. :thumbup2: Going to do studs while its off ???? Or staying at the power your at ?
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  • 3 weeks later...
moostang

moostang

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New head, studs, and rv275's installed! I could feel the extra power right away even on stock setting. One question I have is that my boost while at cruising speed seems lower than before but EGT is also lower. I think my old injectors were worn out and making the EGT higher. I get a little more smoke with edge turned up, but not other wise.

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