Opinion requested: Dealer sez chips blow up turbos (and other parts)
01-17-2006, 02:53 PM
#13
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there's pressure either way, just positive and "negative" as some people care to think about it
saying something is under pressure coloquially implies positive pressure, as measured in PSI. this kind of pressure causes things to explode, or hoses to "pop" off.
the "negative" pressure, or vaccuum, can cause hoses to pinch (i.e. air intake hose) and is the force that causes objects to implode. the vaccuum lines in these motors will rarely suffer from this condition.
so, you're both right, in a way, depending on how you interpret the term "pressure"
to clarify, vaccuum lines can leak and cause "pressure" loss. this will be more evident if more boost is being requested of the turbo by an aftermarket chip
the "negative" pressure, or vaccuum, can cause hoses to pinch (i.e. air intake hose) and is the force that causes objects to implode. the vaccuum lines in these motors will rarely suffer from this condition.
so, you're both right, in a way, depending on how you interpret the term "pressure"
to clarify, vaccuum lines can leak and cause "pressure" loss. this will be more evident if more boost is being requested of the turbo by an aftermarket chip
01-17-2006, 03:00 PM
#16
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True, true...guess I typed it in a peculiar way...vaccuum IS pressure...just not outward. =)
gh0st said they might "pop" which be from possitive pressure. I have never seen a vac line "pop". =)
01-17-2006, 03:04 PM
#18
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Of course there is pressure in terrestrial vacuum.
A perfect vacuum with a gaseous pressure of absolute zero is a purely imaginary concept with no physical reality. In the A4 1.8T vac system there is still pressure. Just like the concept you posed a while back about how an exception does not negate the principle...rubbish. An exception can prove a principle to be fallible.
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01-17-2006, 03:11 PM
#20
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The hose is typically called vac hose for a few reasons...
although it can be used for many things in life. The two lines noted are under both vacuum and outward pressure. That is why you are able to get vacuum and boost readings when connecting a boost gauge to either line mentioned.
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