Dumb Question
05-02-2005, 12:34 AM
#1
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Join Date: Dec 2004
Posts: 99
Dumb Question
what is psi ? pressure.......
what does the max have stock or is it something that is added with turbo or sc?
i remember hearing somebody integra was running 7psi only... like he can add more.... how do you add more im confuse
what does the max have stock or is it something that is added with turbo or sc?
i remember hearing somebody integra was running 7psi only... like he can add more.... how do you add more im confuse
05-02-2005, 01:03 AM
#3
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Join Date: Aug 2004
Posts: 84
PSI....Depends on the context (could be oil pressure, tire pressure, tons of things). But from what you said, he was talking about his turbo. PSI in that context would mean, basically, how much air is being forced into the engine. The higher PSI the more power it will make but will also require different internals. Somebody correct me if Im wrong, but that is the jest.
05-02-2005, 01:16 AM
#4
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Join Date: Nov 2004
Posts: 187
haha that is a dumb question.....if u ARE talking about psi from FI then u can add more psi by going to a smaller belt size aka SC or adding more boost. Stock maximas do not have any turbos or superchargers(hopefully u know that). But IF ur takling about a tire, well then this one is tricky, stock we have about 32 psi but you can add more by putting more air into ur tire.
Dragon is right if there is alot of air being forced into the engine then sometimes the internals will have to be changed. Our engine internals, however, have proven to be very reliable when going the FI route...meaning our internals are pretty safe going into the 300+ hp range.
Anyway puppet if u are talking about boost then check out the SC/TC forum section(lots of good info)
Dragon is right if there is alot of air being forced into the engine then sometimes the internals will have to be changed. Our engine internals, however, have proven to be very reliable when going the FI route...meaning our internals are pretty safe going into the 300+ hp range.
Anyway puppet if u are talking about boost then check out the SC/TC forum section(lots of good info)
05-02-2005, 05:50 AM
#6
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Join Date: Mar 2002
Location: Williamstown, NJ
Posts: 602
In basic terms, an internal combustion engine is nothing more then a semi-complicated air pump. It sucks air in, it blows air out. The process it uses to achieve this is, of course, combustion of a gas/air mixture.
Now the engine in a car, when running, creates what is called a vacuum inside of its intake path. This is a relative term in that the pressure inside the intake path is lower then the pressure of the atmosphere we walk around in everyday. Any engine running naturally aspirated (aka. without any means of forced induction) can only hope to get this vacuum down to zero (or the same pressure as atmosphere) at best when running wide open throttle.
In order to get even more air into the engine, some use the aid of forced induction (supercharger, turbocharger, etc.). This can create the condition at wide open throttle where the intake path pressure is greater then that of atmosphere, which means more air is being crammed into the combustion chambers thus allowing the engine to produce more power. In simplistic terms, the more air you suck in and blow out, the faster your car can go.
So when people speak of running X amount of psi in their car, they are simply talking about how much extra air they are forcing into their engine at wide open throttle with a supercharger or turbocharger as apposed to if their engine didnt have a supercharger or turbocharger.
Now the engine in a car, when running, creates what is called a vacuum inside of its intake path. This is a relative term in that the pressure inside the intake path is lower then the pressure of the atmosphere we walk around in everyday. Any engine running naturally aspirated (aka. without any means of forced induction) can only hope to get this vacuum down to zero (or the same pressure as atmosphere) at best when running wide open throttle.
In order to get even more air into the engine, some use the aid of forced induction (supercharger, turbocharger, etc.). This can create the condition at wide open throttle where the intake path pressure is greater then that of atmosphere, which means more air is being crammed into the combustion chambers thus allowing the engine to produce more power. In simplistic terms, the more air you suck in and blow out, the faster your car can go.
So when people speak of running X amount of psi in their car, they are simply talking about how much extra air they are forcing into their engine at wide open throttle with a supercharger or turbocharger as apposed to if their engine didnt have a supercharger or turbocharger.
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