Turbo charge

This is commonly quoted, however in reality it is heavily dependent upon the match between engine and turbo.
The turbo can start making pressure a few 100 RPM off of idle. Depending upon the size of the turbo charger I have read that it will provide as much as 80% of it's peak pressure while a supercharger is still making less than 25%. Running a quick search I'm finding the same question answered with the turbo winning in low RPM torque.
Now this came as a surprise to me because I've read all the car mags too, with claims that the super chargers boost comes on faster for years.

On one hand, the common belief that superchargers work better at low end torque makes sense.
On the other hand, if a super charger is coupled to the engine. So if it makes 8PSI at 6000 RPM, what does it make at 2500?
Big diesels have turbos, not superchargers.
Top fuel dragsters largely have superchargers (though that too has changed over the years)

 

Most guys are going turbo on drag now. Nitrous and supercharger are not as efficient.

No matter how you look at it in real life testing that supercharger will give you that low end throttle response like a V8.

Turbos will give you nothing till it starts to spool. Dead spot when hitting throttle.

 

You take things quite literally, don't you? Obviously the motor turns, there's hundreds of thousands of them on the road already. I know it does turn, what I mean is that this motor already has incredibly non-linear throttle response resulting in a huge lag before 3500 rpm. I don't care how well it's tuned, the turbo starts there and makes things worse before it starts to make power. And yes, compared to other vehicles the taco seems to have much less exhaust pressure, again I think this is related to the coolant system built into the engine block which runs around the header/collectors, or possibly the pseudo-atkinson cycle has something to do with it as well but the result is that the taco does not develop much exhaust pressure, and therefore would not be well suited to a turbo. You could use one, but you would likely have to start at a turbo sized properly for a 3.5l V6 and work your way down to find the proper size. It could be done, but is less than ideal and would limit the amount of boost and power it could ultimately produce.

 

So have you turboed the 3rd gen motor? Is this just guess work or do you have real life experience puting a turbo on this motor? My turbo on my 400+hp DSM hits 36psi at 3500rpms. It starts building from very low and hits rediculously at 3500prms enough to spin 4 tires in AWD! The power is building as soon as you hit the gas giving low boost at low rpm, at 2k rpms the motor is making way more power than if it was N/A. Even with the turbo. This is super old tech I'm running also. Turbos spool so fast in newer vehices you cant even feel the lag.

 

@Dragons Taco Thanks for that explanation on SC vs Turbo. Informative, and makes sense that newer tech could improve that lag.

Someone mentioned throttle response vs actual power. I think I'd be happier with more throttle response and just perceived power, vs anything empirical I could measure. Most of us probably would for that matter.

I'm bowing out of this conversation now, considering no one on here has done forced induction to a 3rd Gen yet so the argument is speculation only, and therefore not what I'm looking for.

I do look forward to someone finally doing this to one of our trucks.

 

Very well said.
Power output is not the only factor to be successful in the truck market.

 

but what's so funny about that is the marketing point for big power has sold every Raptor made w/in 24 hours of delivery at above MSRP here in Texas. cus we are some numbskull motherfuckers down here and that's all we need to hear.

 

Completely agree.
That's why I bought a Taco.

 

Haven't turboed one but done plenty of exhaust work to know that it doesn't make as much pressure as other motors.

 

Toss a 70mm precision on that bitch and tell me how she runs

 

that is prolly a little big, I have a 56mm BW on my 4.0 and I would say that that turbo may be a bit too big for desired applications on the 3.5, a 51mm would be where I started, maybe even a 46mm, if you are gonna stick with journal bearings, 60 ish might be a decent spot to start with ball bearings but those are just guesses

 

Add a high stall converter and nitrous for spool. It will do just fine.

 

Im sure an HX35 would spin up just fine. That would be my pick.

 

click the truck pic in my sig for link to build (still got a few little things to do to get it finished but looking to put about 350 to the wheels on stock internals)

 

turn your phone sideways

 

I see it the other way. They see many motors every day. Including non ecoboost. When they say the ecoboost have more issues than any other ford motor they work on. I believe them.

 

Okay turbo is more efficient. Nitrous is way to violent. If running high HP your literally waiting for the motor to fail when a turbo car can be tuned to last at the same HP level.

 

THey sell becaues of the power they make. They are awesome to drive. Test drive a new Platinum Ford F-150 and then test drive a new TRD Pro Tacoma. If unbiased you will 100% buy the f150 due to the experience. They put you in your seat like a mustang GT in a truck body.

 

launch control and anti lag boom problem solved

 

Did he really? I didn't know (about the turbo, not the crash). I thought he said he was going to do a turbo colorado diesel now, but didn't know he had done similar with his Tacoma