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Old 11-04-2012, 05:59 AM
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Magnafluxing vacuum testing heads

If the machine shop does a vacuum test on your heads for leakage,would this identify if your heads are cracked ? My guess is no,but not really sure my thinking is correct. PLease tell me your thoughts
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Old 11-04-2012, 06:15 AM
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Please let someone more knowledgeable verify this, but I believe the best way to check is through magna fluxing.
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Old 11-04-2012, 07:24 AM
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no, depending on what they check, it have cracks else where.

where are you located ???

magnafluxing is a brand name......MAG PARTICLE TESTING is what you want.

if you want a real sensitve method, they can do flouresent, under a black light. you can also use a white contrast paint, to help show the indications better.

i have all of this in my garage.
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Old 11-04-2012, 08:52 AM
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Vacuum testing is highly sensitive testing, never heard of that on heads. I perform vacuum testing on vacuum piping at work, that protect cryogenic systems. As stated above, florescent mag particle testing is probably the best/cost effective way to test for cracks. Pressure testing is essential also, for the areas that are inaccessible during mag particle testing.

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Old 11-04-2012, 10:32 AM
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Vacuum testing is for the valve/seats. They do this to see what kind I shape the valves and seats are in before starting machine work.
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Old 11-04-2012, 11:09 AM
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Quote:
Originally Posted by Tuscany View Post
Vacuum testing is for the valve/seats. They do this to see what kind I shape the valves and seats are in before starting machine work.
This makes sense........

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