Crack fixable? Hairline crack between coolant passages

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Jan 21, 2019 | 11:03 AM

eh2_Trav

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From: Bend,OR

Crack fixable? Hairline crack between coolant passages

I pulled this gsr head from a swap I purchased and noticed that is a hairline crack between two coolant passages. It was assembled by a shop so I’m surprised (kinda) that they didn’t tell the guy his head was cracked. Long story short is the head repairable or do I really need to worry about it. I was thinking the repair would be easy to drop a few beads across the crack then get the head milled. I don’t think the hairline crack would really matter and unless you overheat the head it shouldn’t get worse but that’s a complete guess. I never ran a head with a hairline crack like that. Curious to see if anyone ever ran a head with a small crack like this. Thanks for any suggestions or advice.

Jan 26, 2019 | 01:05 AM

turbociv910

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Joined: Oct 2005

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From: expensive land, usa

Re: Crack fixable? Hairline crack between coolant passages

that head is trash.

Feb 2, 2019 | 05:58 PM

CasperBones

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Joined: Feb 2019

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From: NC

Re: Crack fixable? Hairline crack between coolant passages

I don't see why you couldn't. I have seen way worse damage repaired. Groove out the crack, weld it up, scratch it off. Just do a thorough check of the rest of the head before you put it into service. There may be other issues that the heat that cracked it caused.