Ebay 5vz-fe Turbo

[rideexileex]

I think I'll take the plunge on the manifold and downpipe in a few months (maybe next year?). I'm getting married, plus I started a new job, so I have no time right now :-( I'll provide my own turbo, and probably use a Tial 38mm wastegate.

Plus I still have other parts that I need to install before I start getting more stuff... B&M trans cooler, timing belt and components, etc. need to get installed.

This may be a dumb question, but where is the MAF sensor located in their kit?

Thank you for getting this thread back on track! It was getting painful to read...

But from what I can see, I dont see a MAF in there at all? Has to be... I didn't even see a port for it on any of the parts.

Need more coffee....

 

[JayRolla]

Thank you for getting this thread back on track! It was getting painful to read...

But from what I can see, I dont see a MAF in there at all? Has to be... I didn't even see a port for it on any of the parts.

Need more coffee....

Maybe because this kit is made to make power and that truck its installed on most likely has a full EMS that replaces the ECU and has been converted too speed density which does not use a maf.

 

[Robb235]

Actually, I think I see where the MAF goes. Look at the intake tubing. The 90 degree bent tubing on the left (directly below the turbo) has what I believe is for a BOV. Then if you look at the 90 degree tube further to the right in the picture, I believe is an opening for the MAF to screw into.

 

[Robb235]

Maybe this is a better picture.

 

[JayRolla]

Most maf's need to be pre turbo to read the air correcly but this may not be the case with our mafs. And there would also be a recirculation tube for the bov if there was a maf pre turbo. In the dsm world we would have to purchase a maf translator to run a gm maf if we wanted to add it up stream in the intercooler piping.

 

[Robb235]

Most maf's need to be pre turbo to read the air correcly but this may not be the case with our mafs. And there would also be a recirculation tube for the bov if there was a maf pre turbo. In the dsm world we would have to purchase a maf translator to run a gm maf if we wanted to add it up stream in the intercooler piping.

Think Clownmeat and Yoterman have their MAFs post turbo.

 

[rideexileex]

[MENTION=70922]Robb235[/MENTION]

I think you might be right... I see the the two screws that it must mount to.

Factory design for the MAF's is pre-super charger too. I would think the post turbo heat would cook them?

 

[steezemcqueen]

Regarding the whole CFM thing, i could be very wrong but can someone confirm or deny my theory?

Right here goes.

I agree that this turbo will flow more that a SC can but you are still dealing with the same size motor so no matter which method you choose to boost with, the CFM will be the same for the same PSI. Am i right in thinking that? The only way to increase the CFM going into the motor via either a SC or a turbo would be to increase the intake charge pressure since the volume of the cylinders is not changing.

 

[rideexileex]

Regarding the whole CFM thing, i could be very wrong but can someone confirm or deny my theory?

Right here goes.

I agree that this turbo will flow more that a SC can but you are still dealing with the same size motor so no matter which method you choose to boost with, the CFM will be the same for the same PSI. Am i right in thinking that? The only way to increase the CFM going into the motor via either a SC or a turbo would be to increase the intake charge pressure since the volume of the cylinders is not changing.

My thoughts are the same... It's more a thought of what amount of air at a given PSI that the motor can take in

 

[Robb235]

Regarding the whole CFM thing, i could be very wrong but can someone confirm or deny my theory?

Right here goes.

I agree that this turbo will flow more that a SC can but you are still dealing with the same size motor so no matter which method you choose to boost with, the CFM will be the same for the same PSI. Am i right in thinking that? The only way to increase the CFM going into the motor via either a SC or a turbo would be to increase the intake charge pressure since the volume of the cylinders is not changing.

You are spot on. That's exactly what's happening. The relationship between PSI and CFM is proportional because the size of the engine isn't changing.

 

[Singtoe]

Regarding the CFM thing. It also involves the size of the plumbing and intake manifold right up to the cylinder intake valve.


For an example.

A garden hose. It is 1/2" in diameter. At 30 psi, it might flow 10 gallons per minute (CFM)

While a fire hydrant hose which is 2" in diameter . At 30 psi, It might flow 100 gallons per minute.

I believe this is why you see custom larger manifolds on FI motors.

 

[steezemcqueen]

Regarding the CFM thing. It also involves the size of the plumbing and intake manifold right up to the cylinder intake valve.


For an example.

A garden hose. It is 1/2" in diameter. At 30 psi, it might flow 10 gallons per minute (CFM)

While a fire hydrant hose which is 2" in diameter . At 30 psi, It might flow 100 gallons per minute.

I believe this is why you see custom larger manifolds on FI motors.

Understandable. However with the turbo, you probably are going to keep the stock manifold. The SC replaces the stock manifold and has no real charge piping other that the bottom of the housing. Lots of variables to consider i guess.

 

[steezemcqueen]

You are spot on. That's exactly what's happening. The relationship between PSI and CFM is proportional because the size of the engine isn't changing.

Kinda what i thought too. So when people are saying that the turbo is making more power with 4 PSI compared to the SC at 8 psi just because of the CFM, that's not correct.

But obviously the parasitic drag of the SC is part of it too.

 

[steezemcqueen]

I guess another thing to consider would be that the turbo setup might have cooler (thus denser) charge due to the intercooler.

 

[Ed_C]

Thank you for getting this thread back on track! It was getting painful to read...

But from what I can see, I dont see a MAF in there at all? Has to be... I didn't even see a port for it on any of the parts.

Need more coffee....

It's on the charge pipe before the throttle body

 

[Finest]

Regarding the whole CFM thing, i could be very wrong but can someone confirm or deny my theory?

Right here goes.

I agree that this turbo will flow more that a SC can but you are still dealing with the same size motor so no matter which method you choose to boost with, the CFM will be the same for the same PSI. Am i right in thinking that? The only way to increase the CFM going into the motor via either a SC or a turbo would be to increase the intake charge pressure since the volume of the cylinders is not changing.

In regards to an engine's CFM, you are correct that you would need more pressure to potentially make more hp whether it is blown or boosted.

But the magic of turbocharging starts when you cool the intake charge and potentially make more hp with less pressures. A cooler intake charge is more dense, which combined with the appropriate amount of fuel, will create more hp always. So you can theoretically make more hp at 6psi boosted vs. 8psi blown. Then add in the aspect of not having the parasitic loss from driving the blower, however miniscule it all adds up. With a properly sized water-to-air ic setup, you can even get the intake charge temps down near ambient (or even below, with some ice) and improve throttle response with shorter piping.

It's not new that turbocharging is more efficient. But we don't have the kind of aftermarket support (yet) to support the various theories. And since everyone uses their T4R differently, there is no "best" answer for everything. In terms of hp, displacement is king.

But boosted and increased displacement is Godlike! :trophy:

 

[rideexileex]

Temp is a big player in the equation too - I guess the meth setups that the supercharger crazies are using is on par with the intercooler use in a turbo, which puts us back near even again, ha.

 

[Robb235]

Temp is a big player in the equation too - I guess the meth setups that the supercharger crazies are using is on par with the intercooler use in a turbo, which puts us back near even again, ha.

And even then, with a turbocharger, you can do both an intercooler and methanol injection, lol.

 

[Mr. B]

this thread should be locked already

 

[Singtoe]

this thread should be locked already

No need to do that. If you didn't want it bumped up, you should have not posted anything.




As soon as I get my roof on my shop done, I will be ordering one of these kits. Hopefully - Tokan Solutions will have a fuel ready kit (tested) for their Turbo. (injectors, Pump and piggy back).

I will be buying this kit not for 6 psi boost but I want to push that 5vz-fe with as much boost as it can possibly take safely. And I don't want to be the guinea pig for boost limits. I would want it tested and proven first.

So hopefully, Tokan Solutions will have a turn key kit ready.