It’s a positive seal on the inlet side. It’s needed because the turbo is subjected to engine vacuum. Modern turbo setups are all blow through and have rings. The rings have less drag but are not positive. Oil would be sucked right through and burned under high vacuum
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thanks Bison , I have an IC setup do i still need the carbon seal?
Depends on the intercooled setup. Is it a hotair intercooled setup? If the throttle body is still attached to the front of the turbo it will need a carbon seal.
thanks Bison , I have an IC setup do i still need the carbon seal?
where is the turbo sitting?
that set up needs a carbon seal. john
if its worked for 2 years why worry. my hot air turbo without a carbon seal lasted less than a day.sucked about a quart or so of oil out of the crankcase and smoked like hell. johnWhy? 2 years like that and no issues.
This setup doesnr need a carbon seal. Throttle body is after turbo.that set up needs a carbon seal. john
wheres your wastegate?