Similar thoughts to a few of the comments.
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cold water delivery is on that side of the block.
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and if running some serious boost
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like a pint glass full of boiling water then chucking it at cold, it'll crack
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/ shatter.
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I would have thought a cast iron chunk that like wouldnt have had any issues.
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I guess again.
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like comment shave been made.
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the improvements were made to the later casts.
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Matrix ST215 engine any one
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??!
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Prevention methods
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??!?!!
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Coolant mix
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- make sure good quality is used with rust inhibitor.
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cast iron rusts.
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probably take years
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/ decades.
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but in an exagerated view.
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it'll weaken its integrity with age.
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Again coolant mix.
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good ratio used as it'll stabilise the temperature circulating.
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Pure water will fluctuate in temps quicker than those with addiitives.
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Buy a 98+ block
Turn the boost down
Run it without a thermostat
Mega Rich tuning would reduce in cylinder combustion temps.
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Carry out some heat treating to the block
NDT
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/ Thickness check the cast around that area before building on it.
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Just thinking on a little outside the box.
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I wonder is it has anything to do with the ARP studbolt fitment.
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the stud will undergo partial expansion with heat, if the ARP stud is fitted and effectively tightened up against the blocks recessed thread, then potentially, when the stud expands, it could potentially crack the block.
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