31 psi Video
09-03-2006, 10:01 PM
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31 psi Video Time to turn it up . How are these engines surviving these pressures, hell makes 20psi sound weak. Its not a LS1 but I respect any form of hotrodding ..at this level .
http://www.youtube.com/watch?v=oq5BG...%20Z06%20Ninja
http://www.youtube.com/watch?v=oq5BG...%20Z06%20Ninja
Last edited by cws T/A; 09-03-2006 at 10:08 PM.
09-03-2006, 10:19 PM
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psi means absolutly nothing. Its a mearsure of air preasure..not amount of air. Stock..most ls1s will handle rouldn't 5-8psi..which doesn't sound a lot, but liek i said..psi isn' the actualy amount of air. i'm surprised the supra isn't running more, hell, I've seen a evo running 45psi before and made a lil over 1000 to the wheels. I've also seen a few videos of supras running 40+psi too.
09-03-2006, 10:46 PM
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so what your saying is these engines have more of a restiction than others so they show more psi . That mother just ran some nine's in the 1/4 dragging *** with a 6 cylinder I think it makes some difference . Look at the compound setups on diesels over 100psi . How is their no cylinder head lifting , blown headgaskets etc I want to know how they last ...it says sustained .
09-04-2006, 02:21 AM
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Say I have a warhawk block ,the strongest internals,arp studs, thickest deck aftermarket cylinder heads, oringed block and heads, race fuel , a tune set up for it . Single Turbo 106mm or bigger . I know psi is a reading of restriction . On a engine of this caliber what happens when you let the wastegate go free 30- 40 psi does the engine blow or scream 2,500hp like the Pro 5.0 Mustangs do ?
Top Fuel's run 40 psi they make unrecordable power 6,000+
Top Fuel's run 40 psi they make unrecordable power 6,000+
09-04-2006, 02:39 AM
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check this **** out another supra tell me the boost didnt help him run this number
fukur 's blowin flames on the 2 step 36 sec into the video traps 164mph granny shifting ,non tubbed gotta give props where its due
http://www.youtube.com/watch?v=Zzxwe...%20Z06%20Ninja
fukur 's blowin flames on the 2 step 36 sec into the video traps 164mph granny shifting ,non tubbed gotta give props where its due
http://www.youtube.com/watch?v=Zzxwe...%20Z06%20Ninja
09-04-2006, 02:49 AM
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Originally Posted by cws T/A
check this **** out another supra tell me the boost didnt help him run this number
fukur 's blowin flames on the 2 step 36 sec into the video traps 164mph granny shifting ,non tubbed gotta give props where its due
http://www.youtube.com/watch?v=Zzxwe...%20Z06%20Ninja
fukur 's blowin flames on the 2 step 36 sec into the video traps 164mph granny shifting ,non tubbed gotta give props where its due
http://www.youtube.com/watch?v=Zzxwe...%20Z06%20Ninja
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09-04-2006, 03:05 AM
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Actually, air pressure is a measure of air. If you had 2 engines of identical displacement and one was operating at 15psi and the other at 20 psi, and the air was at roughly the same temperature, the engine at 20 psi would have more air in it. positive pressure results from forcing more air into a container (like an engine cylinder) than it wants to be at naturally. This forcing of the air causes compression which creates the positive boost pressure. So the higher the pressure, the more air is in the cylinder.
09-04-2006, 08:17 AM
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do some research on the tractor pulling guys. In the farm tractor class they have girdales that go from the bottom of the engine over the top on the outside to keep the head on the engine. They are running close to 200psi boost, if you every have a chance to go see a pulling event, go!! the alcohol tractors and the unlimiteds are my favorite!!!!!!!!!
09-04-2006, 08:28 AM
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Originally Posted by HossinatorSS
Actually, air pressure is a measure of air. If you had 2 engines of identical displacement and one was operating at 15psi and the other at 20 psi, and the air was at roughly the same temperature, the engine at 20 psi would have more air in it. positive pressure results from forcing more air into a container (like an engine cylinder) than it wants to be at naturally. This forcing of the air causes compression which creates the positive boost pressure. So the higher the pressure, the more air is in the cylinder.
09-04-2006, 09:33 AM
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Originally Posted by HossinatorSS
Actually, air pressure is a measure of air. If you had 2 engines of identical displacement and one was operating at 15psi and the other at 20 psi, and the air was at roughly the same temperature, the engine at 20 psi would have more air in it. positive pressure results from forcing more air into a container (like an engine cylinder) than it wants to be at naturally. This forcing of the air causes compression which creates the positive boost pressure. So the higher the pressure, the more air is in the cylinder.
Originally Posted by Country Boy
Not always true.... Take a 3" pipe with 20 PSI. Its going to flow X amount of air. Now take a 1.5" pipe with 40 PSI air. Its going to flow the exact same CFM of air as the larger pipe with a lower pressure. Its all abut CFMs, not PSI. PSI is a measurement of restriction.
09-04-2006, 11:31 AM
#15
"is it possible to run 90psi? some one mentioned a turbo diesel truck running that much, i was in disbelief"
They can run WAY more than that. Some of the diesel tractors are up in the 250+ psi range! You can even find a few Cummins roaming the street making in excess of 100 psi too!
You beat me to it!
They can run WAY more than that. Some of the diesel tractors are up in the 250+ psi range! You can even find a few Cummins roaming the street making in excess of 100 psi too!
You beat me to it! 
09-04-2006, 12:47 PM
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Originally Posted by Nick98Z28
i love that supra. I still don't get how those engines stay in one piece after that kind of abuse.
http://www.shepracing.com/videos/7.8...20in%20car.wmv
http://www.shepracing.com/images/785.jpg
a vid and the time slip..that is a 4g63. That motor is on its second season without being redone, busrchur racing built it. its 1g talon tsi awd.
smaller engine runnign faster too.
)
09-04-2006, 01:37 PM
#19
Remember, they keep using the example of blowing through a lets say... let's be creative... A um... Paper towel roll... vs a straw from a capri sun. Imagine running the same PSI through both, how restrictive is the capri sun straw vs the paper towel roll? Go ahead, grab both and try it, gaurantee your blood pressure will skyrocket and you'll instantly turn red trying to blow through that straw. IE - PSI vs CFM.
ive never seen a bosst gauge with that much on it, lol