what is blowback
Blowby is hot gasses sneaking past the rings, just leakage
under pressure with worn sealing pieces.
Reversion is exhaust gas shooting back into the intake,
through the valve overlap (both open) period as the intake
is vacuum and the exhaust is positive pressure.
Backfiring in the intake happens when there's a sneak
spark or hot-spot, that gets past the intake valve and
burns the charge in the intake. Not much of a problem
in port injection cars with dry-flow intakes but wet N2O
fogger setups make a burnable charge throughout (bad
with a plastic intake that can't take a small explosion
internally).
I have only heard "blowback" used in the sense of fire
fighting (like the movie). But maybe what you're thinking
of is one of these?
under pressure with worn sealing pieces.
Reversion is exhaust gas shooting back into the intake,
through the valve overlap (both open) period as the intake
is vacuum and the exhaust is positive pressure.
Backfiring in the intake happens when there's a sneak
spark or hot-spot, that gets past the intake valve and
burns the charge in the intake. Not much of a problem
in port injection cars with dry-flow intakes but wet N2O
fogger setups make a burnable charge throughout (bad
with a plastic intake that can't take a small explosion
internally).
I have only heard "blowback" used in the sense of fire
fighting (like the movie). But maybe what you're thinking
of is one of these?
lol jimmy, ur thinkin of BACKDRAFT..lol thats when the fire is starving for air and basically it creates an explosion because of that starvation. blowback sounds likea backfire term.
Blowback? Reciprocation of special favors if youre into that sort of thing. But like jimmyblue said, blow by is the combustion process blowing by the worn piston rings down into the crankcase.
