Possible Supercharged 2000 GT Trade
- Thread starter Deblaca
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justinschmidt1
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He probably has the 2.62, smallest pulley vortech makes....either way, if you're at 15 psi at 2.8 and go to a 2.62 its only gonna pick up 1-2psi so would make sense to see 17 psi with no slipping but considering he is still running a 6 rib setup I have a hard time believing there isn't pretty bad belt slippage on that.
Anyway, seems like a good car, owner doesnt seem to know wtf he is talking about but still a good car in there.
justinschmidt1
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Wichers123
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Like I said psi is psi.
http://en.wikipedia.org/wiki/Pounds_per_square_inch
The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in2 or lbf/in2 or lbf/sq in or lbf/sq in)/ pressure per square inch is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:
http://en.wikipedia.org/wiki/Pounds_per_square_inch
The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in2 or lbf/in2 or lbf/sq in or lbf/sq in)/ pressure per square inch is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:
justinschmidt1
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Posting a link to wikipedia doesnt help your cause.....just confirms that you really have no idea what youre talking about so went and copied and pasted something from wikipedia.
PSI is relative
15 psi in your motor is not the same amount of air as 15 psi in his motor, simple as that.
Your blower might make 15 psi with a 3.6 pulley but on his motor it may only make 10 psi with the blower pushing the same amount of air.
PSI is a measure of restriction.
This is why you can remove the cats and your boost can drop 2 psi on a boosted application.
You remove a restriction and the air flow through the motor is now better thus lower PSI.
You put trickflow heads on the motor, better flow, your PSI drops. You add displacement, PSI drops.
Anyways, the reason you're seeing such high boost on your application is 1) no intercooler and 2) NPI heads
Intercooler can drop the PSI a few psi and I know when I went from NPI to PI my boost fell about 2 psi.
Pretty much the only case PSI is PSI is if we are talking identical cars with identical compressors
Any of this making sense? lol
PSI is relative
15 psi in your motor is not the same amount of air as 15 psi in his motor, simple as that.
Your blower might make 15 psi with a 3.6 pulley but on his motor it may only make 10 psi with the blower pushing the same amount of air.
PSI is a measure of restriction.
This is why you can remove the cats and your boost can drop 2 psi on a boosted application.
You remove a restriction and the air flow through the motor is now better thus lower PSI.
You put trickflow heads on the motor, better flow, your PSI drops. You add displacement, PSI drops.
Anyways, the reason you're seeing such high boost on your application is 1) no intercooler and 2) NPI heads
Intercooler can drop the PSI a few psi and I know when I went from NPI to PI my boost fell about 2 psi.
Pretty much the only case PSI is PSI is if we are talking identical cars with identical compressors
Any of this making sense? lol
MustangChris
Mythic Level
nice little debate we got goin' on here...
Speaking of removing cats.. How do straight piped 5.0s sound?
justinschmidt1
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Probably ****ing awesome lol
justinschmidt1
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im practicing for debate club yo
MustangChris
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well dont let me get in the way, just keep it tech oriented 
Wichers123
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15 psi in your motor is not the same amount of air as 15 psi in his motor, simple as that.
your statement says I'm correct. I once never said anything my motor vs his motor all I said was psi is psi. What your stating is 10psi is not the same psi because of difference in cfm's. cfm is the AMOUNT of air going in and psi is the PRESSURE built up in the air behind the throttle body. So psi will always be psi because its a pressure on top of atmospheric pressure which is 14.7. Cfm is the amount of air flow.
All I'm saying is the centri could spin 21psi if it wanted too, its all about how fast you spin it. Just how a turbo works!
your statement says I'm correct. I once never said anything my motor vs his motor all I said was psi is psi. What your stating is 10psi is not the same psi because of difference in cfm's. cfm is the AMOUNT of air going in and psi is the PRESSURE built up in the air behind the throttle body. So psi will always be psi because its a pressure on top of atmospheric pressure which is 14.7. Cfm is the amount of air flow.
All I'm saying is the centri could spin 21psi if it wanted too, its all about how fast you spin it. Just how a turbo works!
justinschmidt1
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I really have no idea what you are getting at here lol
What I am saying is it takes that blower a lot more work to make 15 psi in his motor than it does in your motor.
What he posted doesnt even add up.
Its not going to make 15 psi with a 2.8 and then 23 psi with a 2.6.....
Its just nonsense, there is no way that blower is making 21-23 psi on that motor with that setup.
The fact that you believe it is just proving your ignorance regarding this subject.
Your statement doesnt even make sense...the centri can spin 21 psi? On what motor? with what pulley setup? for how long before it fails? how much heat is it creating being out of its efficiency range?
Put your blower on a 500 cu inch big block with the smallest pulley you can possibly find and you're telling me its still gonna make 20 psi?
Wichers123
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Okay guy
justinschmidt1
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OK meow
MustangChris
Mythic Level
:slowclap:
good hussle. You're both winners!!! :-D
(Sorry, I went to Catholic school growing up.... playing sports in a "Jesus loves everyone" setting must be rubbing off lol!!)
good hussle. You're both winners!!! :-D
(Sorry, I went to Catholic school growing up.... playing sports in a "Jesus loves everyone" setting must be rubbing off
lol!!)
Wichers123
Well-Known Member
Lol
Corndiddly
Member
There is some good info here. I like it
ElwessRacing
New Member
Debate's over?? :undecided:
