An old idea but perhaps interesting
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iTrader: (11)
Joined: Mar 2002
Posts: 12,604
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From: East Central Florida
An old idea but perhaps interesting Back in the '80s I remember reading about a system
that was "sort of" like nitrous, but was based on
simple compressed air. Like SCUBA type pressure
bottle, a valve and a jet into the carb throat. The
action I think combined charge cooling and some
Venturi ram effect. Limited in duration but, if you
had a nice tiny compressor onboard, replenishable
as you idle or cruise. All you need is a 10-second
shot, right
I bet this would play hell with a MAF but a speed-
density tuned car probably would love a couple PSI
of rammed super-cooled air.
that was "sort of" like nitrous, but was based on
simple compressed air. Like SCUBA type pressure
bottle, a valve and a jet into the carb throat. The
action I think combined charge cooling and some
Venturi ram effect. Limited in duration but, if you
had a nice tiny compressor onboard, replenishable
as you idle or cruise. All you need is a 10-second
shot, right
I bet this would play hell with a MAF but a speed-
density tuned car probably would love a couple PSI
of rammed super-cooled air.
It's a fine idea. If my math is correct, if you compress a 10-gallon tank of air to 1500 psi, that's 136 cuft at atmosph pressure. If you released it all in 10 seconds, that's over 800 cfm. But an on-board compressor won't get the air up to 1500 psi - you'd need a scuba shop for that. If you assume 250 psi, then that's 23 cu ft or so, and in 10 seconds that's 136 cfm. Could be 100hp boost. It would take some big lines & solenoids to flow that much air... but a refill at a scuba shop has got to be cheaper than a nitrous refill
Thread Starter
Moderator
iTrader: (11)
Joined: Mar 2002
Posts: 12,604
Likes: 7
From: East Central Florida
SCUBA pressures are 2500-5000PSI. I saw some
compressors that would go that high on eBay
but they look heavy
and expensive
The valves for this kind of pressure though are
readily available. And pawn shops down here
always seem to have a SCUBA tank or two.
I did the same kind of math and figured a 1500PSI,
2cuft tank would give you a 2ATM intake pressure
(if you could make it stick) for 10 seconds.
The downside is limited boost time, the upside (with
the proper compressor / dryer) is unlimited free refills.
compressors that would go that high on eBay
but they look heavy
and expensive The valves for this kind of pressure though are
readily available. And pawn shops down here
always seem to have a SCUBA tank or two.
I did the same kind of math and figured a 1500PSI,
2cuft tank would give you a 2ATM intake pressure
(if you could make it stick) for 10 seconds.
The downside is limited boost time, the upside (with
the proper compressor / dryer) is unlimited free refills.
