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Yes those are the coolant jackets. You should have them cleared before assembling the head to the block. They always get blocked like that on the exhaust side of the engine only.
 

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can't spell shazam w/o it
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blackout_89t said:
Yes those are the coolant jackets. You should have them cleared before assembling the head to the block. They always get blocked like that on the exhaust side of the engine only.
Why is that... ?

I cleaned mine out (just one or two) with a vaccuum hose next to it and me picking away at that gunk. Make sure it doesn't go in!
 

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Oh wow defiantly open those ports more! That will cause a coolant problem.
 
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Yea I just went to look at mine just to see what it should look like. Mine look nothing like that, no build up at all. That almost looks like a bad casting. :dunno:

I would def. Grind that out. Match it to the gasket with a sharpie and clean out on the inside of the sharpie line.
 

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no way chase. there fine. that is very common with remaned heads. the ports were probably just corroded out so they welded them up. did you get that head from cylinderheads international? they do that to almost every cylinder head. it wont affect jack! as long as they are open they will cool. i ran two heads like that and never had any probs. good luck bro!
 
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