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RED97KOTA
Dodge Dakota
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1/10/2003
14:59:09
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 Subject: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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Took my 5.2L heads to the local shop to get a 3 angle valve job, they called me and said both heads had cracks between the intake and exhaust seats and were no good. The engine was not giving any problems, I just pulled the heads to replace the seals and change the springs. Do these small cracks hurt anything? Can I still use the heads?? I seem to remember the same problems occuring on some other types of heads and the general opinion was they would not hurt anything. Opinions please!
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Anthony G
Dodge Dakota
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1/10/2003
15:15:48
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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My only experience with a crack head was on my 87GTA, I was having my valves replace due to oil leaking down the stems and puffing smoke at startup. It's been some time, but they used some kind of metallic stuff and it showed the crack.
Before replacing the heads, it use to idle OK. After replacing the heads with MY88 heads :) It ran like a champ. Anything cracked can't be good, so if you plan on spending all the time & money already, might as well do it right and get some good heads.
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shad
Dodge Dakota
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1/12/2003
00:32:35
|  RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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magnaflux is the metalic stuff they use to find the cracks.
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rtdkota
R/T
1/12/2003
01:05:12
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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It's a common problem with the stock heads. Mine had 5 out of 8 cyl cracked between the valves... I was using a tad of water, and had 2 green spark plugs upon inspection. I went with the RT 1.92 heads, got 2 heads in the garage now that are as good as boat anchors now.
RTDKOTA
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Cory
Dodge Dakota
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1/12/2003
01:22:59
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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Hey R/T you wanna get rid of those 2 heads? e-mail me and I'll see if we cant figure somethin out. Or send me some pictures of them.
Cory
littlecrashez1@hotmail.com
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red
Dodge Dakota
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1/12/2003
02:46:51
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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Why are your heads needing replacement?
You must have some major abuse or milage on them huh?
Before you took them off did you do a leak down test?....I hope so. If so, that will tell you how bad they were. And even if they are bad you can weld them up. Just curious why did you take them off....for performance, or tuning, or what...seems like a lot of work so soon on a 97.
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b1llyw
DakotaEnthusiast
1/12/2003
07:01:59
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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Replace them now while you have them off. Stock Magnum heads seem to crack like that pretty regularly. You're lucky you didn't find it out the hard way.
Bill White
2002 QC 4x4, SLT , 4.7, 5 spd, 3.92 LSD
1995 CC 4x2, SLT, 318, 5 spd, 3.55 LSD
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Deep Purple
Gen III
1/12/2003
08:01:22
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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There is no good repair for cracked heads except replace them. Only bad things can happen if you try any repair for it will fail and you'll get a crankcase full of water. If you get used heads, have them magnafluxed. Might opt for an M1 manifold while she's apart too. At least a new bellypan and gasket. Good luck
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RED97KOTA
Dodge Dakota
JOIN HERE
1/13/2003
22:07:30
| RE: 5.2L HEADS CRACKED! OPINIONS PLEASE!
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Problem solved, found a set of heads (fully ported no less) at a local swap meet. Had them magnafluxed and they look good! My truck had 82K on it and it was dry, no water in the cylinders or evidence of water. The cracks were very small between the seats. The reason the heads were off to begin with was to change the springs and "freshen them up". Yes I'm going with the M-1 and also the KRC206X cam along with PPH headers. I'll post the results when complete!!
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