14b turbo psi?

[talon_frost]

hey , If you were to take the 14b turbo and hook it up to a gauge without mbc, what can the 14b turbo psi be because im getting my mbc tuned and im hooking it up to my compressor and setting the compressor at the flow rate of the turbo, just need to knwo what the 14b turbo will create.

 

[oldman420]

If you mean your running a vac line directly from your compressor housing straight to your wastegate you will run about 10-12psi

 

[talon_frost]

no i mean if the turbo j-pipe turned into a vac pipe and hooked up to a gauge what would the 14b turbo generate if you did not control the boost other then reving the hell out of the car to redline.

 

[oldman420]

You would hit 15-16psi then fuel cut. I would not recommend this.

 

[talon_frost]

no i mean imagine the jpipe turned into a gauge how much psi would the 14b turbo produce if the car redlined ?

 

[sonik619]

What?

 

[oldman420]

At a stand still?

 

[talon_frost]

ok take our engine and rev to redline, spooling the 14b turbo, if you hooked a gauge to the compressor housing right where the j-pipe would be, how much psi will it generate.

 

[oldman420]

1-2psi max, your not sucking in too much air just standing still like that. What are you trying to accomplish with this?

 

[talon_frost]

no imagine instead of the air your flowing to your intake its going to a gauge and your not regulating the boost level, how much psi would the 14b turbo flow?

 

[oldman420]

Hahahaha, i have no idea what you are trying to say or accomplish with this. But if you do it make a vid I want to see this.

 

[axloverstreet]

.................................

 

[talon_frost]

what im trying to accomplish is to set my boost control without have to drive the car just set with a compressor and put it on.

 

[oldman420]

Won't work. Put the mbc on and gradually turn it up untill you hit desired boost level.

 

[tkelly27]

Lol, no.

http://www.mygen.com/users/dbruce/m...Compressor Maps_files/280z_flow_on_T04e51.gif

See that line on the left, that's the surge limit. Past that point the turbo starts to push air back through itself until it goes under the line. You would be down at zero flow, so it might make a few psi, but not much.

Make a run, adjust your boost controller and repeat, or use an air compressor.

 

[kottyking]

For the love of christ, invest in a data logger too.

 

[CanadianTSi]

Edit...

 

[DSMopar]

Seriously, wtf. You can't 'flow' pressure, and you can't build pressure with no flow on a turbo. And even if you could it would NOT be representative of how to set your MBC. Put it on the ####ing car, turn it all the way down and just adjust it by trial and error for ####s sake.

 

[BeantownDSM]

I have been running my ported 14 for a long time and I would not think of some kind of ?? like that.

 

[JusMX141]

ok take our engine and rev to redline, spooling the 14b turbo, if you hooked a gauge to the compressor housing right where the j-pipe would be, how much psi will it generate.

0 to .5 psi.

Turbochargers operate on exhaust load....if there's no load on the engine (freerevving) then the turbo will not generate any boost.

This is why you cannot simply rev your engine, cut the throttle, and expect to hear anything audible from the blow off valve....it's not generating boost.


Now if you have 2-step Stutter or Anti-Lag, this is a completely different story.

 

[rstchris]

I beg to differ on that, I had a friend with a first gen and he would get 12psi and the actuator would open on a free rev. the turbo was extremely loose and ate itself to shavings a few months later but it would spool almost right off idle.

 

[Dert]

0 to .5 psi.

Turbochargers operate on exhaust load....if there's no load on the engine (freerevving) then the turbo will not generate any boost.

This is why you cannot simply rev your engine, cut the throttle, and expect to hear anything audible from the blow off valve....it's not generating boost.


Now if you have 2-step Stutter or Anti-Lag, this is a completely different story.

actually I have a 2g and I can rev it up at a standstill and at about 3000+ rpm my bov vents loudly, the same as if i were driving and i dont have 2step or anti lag, its stock except for apexi cold air intake, greddy type rs bov, guages...

 

[russ96gst]

actually I have a 2g and I can rev it up at a standstill and at about 3000+ rpm my bov vents loudly, the same as if i were driving and i dont have 2step or anti lag, its stock except for apexi cold air intake, greddy type rs bov, guages...

Still not venting due to boost building...

 

[zckry]

This thread is so confusing?

 

[Dert]

Still not venting due to boost building...

no its not, but he said you wouldnt be able to hear a bov just by revving it...