How much boost on a b18c5
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Junior Member
Joined: Nov 2002
Posts: 517
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From: Pittsburgh, Pa, US
How much boost on a b18c5
I have a 96 civic ex with a b18c5. I was wondering how much boost would be safe on stock internals (that will soon change but for now it is stock). My setup is listed below:
Drag Gen 3 turbo kit
Greddy Profec-B
APEXi S-AFC
AEM fuel rail/reg
fluidine radiator
RC 550 injectors
Intank fuel pump
TIAL wastegate
PS this is what I decided to go with please no bashing.
Drag Gen 3 turbo kit
Greddy Profec-B
APEXi S-AFC
AEM fuel rail/reg
fluidine radiator
RC 550 injectors
Intank fuel pump
TIAL wastegate
PS this is what I decided to go with please no bashing.
Honda-Tech Member
Joined: Aug 2000
Posts: 4,232
Likes: 1
From: Alabaster, Al, USA
Re: How much boost on a b18c5 (CRVRX)
it depends on what you are using for fuel management.if you use a good stand alone, i would think somewhere around 15 psi.i would put a thicker head gasket to lower compression before you ever see boost.it could save you lots of trouble.
Honda-Tech Member
Joined: Feb 2000
Posts: 4,675
Likes: 1
From: Toronto, Canada currently residing in ATL, GA, USA
Re: How much boost on a b18c5 (Nameless)
With tuning (Good tuning) I've seen as much as 10-14 psi.
With a piggy back fuel management system 5-7 psi
With a piggy back fuel management system 5-7 psi
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Honda-Tech Member
Joined: May 2002
Posts: 3,047
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From: California
Re: How much boost on a b18c5 (Apex i ITR)
It's not always about boost levels.
Originally posted by highmilehatch
you really have to take into consideration the amount of air that particular turbo is pushing into the engine itself, at those boost levels. For example, a larger turbo with bigger specs will push more air into the engine at that same boost level, and more potential for horsepower.
you really have to take into consideration the amount of air that particular turbo is pushing into the engine itself, at those boost levels. For example, a larger turbo with bigger specs will push more air into the engine at that same boost level, and more potential for horsepower.
Originally posted by st00pid
well the engine doesnt know what boost is. The amount of air that gets into the motor is 300whp worth of air, regardless of the manifold pressure. I feel that 300whp is safe for stock engines on pump gas.
well the engine doesnt know what boost is. The amount of air that gets into the motor is 300whp worth of air, regardless of the manifold pressure. I feel that 300whp is safe for stock engines on pump gas.
Originally posted by uglyasscivic
Boost is a measure of restriction from the turbo to the intake ports and valves. In a perfect world if there was no need to tune, what would hurt your motor? Horsepower. Horsepower is the only thing that can hurt your motor and since it is NOT a perfect world it must be properly tuned. Every combination of motors have their limits to how much horsepower they can make and a stock b-series bottom end can handle 300-365 whp regardless of the intake manifold pressure. The trick is to move the (peak) cylinder pressure (way) past TDC.
Boost is a measure of restriction from the turbo to the intake ports and valves. In a perfect world if there was no need to tune, what would hurt your motor? Horsepower. Horsepower is the only thing that can hurt your motor and since it is NOT a perfect world it must be properly tuned. Every combination of motors have their limits to how much horsepower they can make and a stock b-series bottom end can handle 300-365 whp regardless of the intake manifold pressure. The trick is to move the (peak) cylinder pressure (way) past TDC.
Originally posted by jinxproof99
that is a very good point. one which i think alot of people here(and elsewhere) don't understand. its not always the amount of boost you should be worried about, its the horsepower, a/f ratio, timing, etc.... for instance, some say a stock gsr will take 10 lbs of boost. well, theres a huge difference between a t3 @ 10 lbs and a t-66 @ 10 lbs. you must consider the whole equation, not just a part of it.
that is a very good point. one which i think alot of people here(and elsewhere) don't understand. its not always the amount of boost you should be worried about, its the horsepower, a/f ratio, timing, etc.... for instance, some say a stock gsr will take 10 lbs of boost. well, theres a huge difference between a t3 @ 10 lbs and a t-66 @ 10 lbs. you must consider the whole equation, not just a part of it.
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