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Author Topic: anti freeze problem  (Read 4540 times)

Offline mitch

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anti freeze problem
« on: October 01, 2010, 02:25:08 PM »
no.4 hole getting steamed.pulled motr down twice in the last 2weeks.pessure tested both  barrell & head twice. had head&barrel  decked 2 thou.new gaskets.stock motor, brock side winder,air box mod.exhaust valves&plug stone white.combustion chamber also very clean.this thing is starting to stress my ass out.maybe some one out there can help me out. thanks mitch
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Offline TT

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Re: anti freeze problem
« Reply #1 on: October 02, 2010, 09:34:28 AM »
crack??
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Offline mitch

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Re: anti freeze problem
« Reply #2 on: October 02, 2010, 09:53:11 AM »
thats exactly what i thought.pulled motor doun twice. first pressure testwas 40 psi,second was 50psi.sat  on test bench for 2hours,needle never budged.
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Offline FlatlandBusa

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Re: anti freeze problem
« Reply #3 on: October 03, 2010, 01:39:45 PM »
A couple of things you might try.

Use a dye penetrant inside the combustion chamber and ports.

Also when pressure testing use a oven or rose bud to heat the castings up to operating temp, had to do this on a honda civic head a few years back to find a crack in an intake port.
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"You can not escape the responsibility of tomorrow by evading it today."
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Offline mitch

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Re: anti freeze problem
« Reply #4 on: October 04, 2010, 07:45:22 AM »
thanks,i.ll  give that a go.want to put this to rest    .i got a line on another head,but would like to find issue with this one.
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Offline kinko

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Re: anti freeze problem
« Reply #5 on: October 08, 2010, 12:20:29 PM »
My buddy had the same problem. Turned out he had a crack by the intake valve..
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Offline mitch

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Re: anti freeze problem
« Reply #6 on: October 10, 2010, 09:17:48 AM »
thanks guys,just going to go  ahead &replace it.gonna make this thing go away
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