5.2L Supercharged V8 Confirmed

[EricM]

the supercharger makes the engine less efficient, especially at lower power.

Duh. You are good at copying and pasting. Let me ask you one question. Do you know what the bypass valve on a PD supercharger does? Don't search, don't copy and paste- just, do you know what it is and what it does?

 

[EricM]

I see some yes but you can find engine failure in all vehicles. Some engine failures here and there doesn't mean every 5.2 ever made is going to grenade.

OK put it this way- it fails way more often that most Ford engines. It's all about harmonics in the crank. That is why they have a bad reputation already and why Ford does NOT recommend a supercharger. It's the largest displacement FPC engine ever made. There is a reason other companies never went there. You CAN do it obviously, the engine exists, but it's better not to if you don't have to, IE bump it to a V12.

If the FPC engine was durable, they'd just slap the blower on that and roll out the GT500. It's not though. A FPC 5.2L V8 with a blower at 750 HP would never pass their durability testing.

 

[kid icarus]

Increased fuel efficiency when adding a turbo???? On what planet? Here on earth when more air is introduced into the combustion chamber you must increase the amount of fuel as well. The more boost, the more fuel. Yes, turbos are more efficient than superchargers but both will cost you MPG's.

Maybe there is some confusion in how people perceive this. I think many people relate this to the engine downsizing w/ power adder idea. I don't buy into it because you have a rubber band type power plant that is stressed just to get the object moving.

 

[Tx State]

OK put it this way- it fails way more often that most Ford engines. It's all about harmonics in the crank. That is why they have a bad reputation already and why Ford does NOT recommend a supercharger. It's the largest displacement FPC engine ever made. There is a reason other companies never went there. You CAN do it obviously, the engine exists, but it's better not to if you don't have to, IE bump it to a V12.

If the FPC engine was durable, they'd just slap the blower on that and roll out the GT500. It's not though. A FPC 5.2L V8 with a blower at 750 HP would never pass their durability testing.

I thought not adding boost to the 5.2 had more to do with the compression ration instead of reliability?

 

[1roadking]

Turbos are more efficient supercharger are more consistent and quicker responding. I have the Raptor and a ZL1 Camaro and the supercharged motor hits right now when you get after it! 0 lag and instant power. Now that I’m use to the turbo I really like it, but there is spool up lag when coming off really light throttle like cruising at 55 on the highway and hitting it to a pass. Once I adjusted to the delay it stopped annoying me. I will say for outright rip your head off brutal power a large displacement supercharged motor is addictive

 

[rtmozingo]

@EricM and @SilverBolt

I don't know what to tell you. Increasing thermal efficiency is increasing the performance of a closed system. It is basic thermodynamics. The less energy wasted as heat the more energy is retained in the system to do work. You are arguing against fundamental tenants of thermo.

If you don't believe me, disconnect your turbo and see how your engine does. It will work harder (obviously) and use more fuel. My coworkers raptor was getting an underboost code as his intercooler piping had come loose. His truck was downshifting on hills to fifth, whereas mine the turbo would just pick it up. His mpg definitely went down.

I only quoted from other sources to back up my claim, since I tire quickly of people who don't know what they are talking about. Put up or shut up, as they say.

 

[rtmozingo]

Duh. You are good at copying and pasting. Let me ask you one question. Do you know what the bypass valve on a PD supercharger does? Don't search, don't copy and paste- just, do you know what it is and what it does?

Irrelevant, but same as any other bypass does - it bypasses flow so you don't spin your charger. So you revert back to N/A performance, still less efficient than with a turbo. What's your point?

 

[zombiekiller]

OK put it this way- it fails way more often that most Ford engines. It's all about harmonics in the crank. That is why they have a bad reputation already and why Ford does NOT recommend a supercharger. It's the largest displacement FPC engine ever made. There is a reason other companies never went there. You CAN do it obviously, the engine exists, but it's better not to if you don't have to, IE bump it to a V12.

If the FPC engine was durable, they'd just slap the blower on that and roll out the GT500. It's not though. A FPC 5.2L V8 with a blower at 750 HP would never pass their durability testing.

WAT?

please tell me where your failure rates are coming from.


AN FPC makes horsepower, not torque. with the cam tuning the gt350s come with, a raptor would be a complete dog. CPCs make far better torque. this is also why the gt500 is CPC.

 

[EricM]

WAT?

please tell me where your failure rates are coming from.


AN FPC makes horsepower, not torque. with the cam tuning the gt350s come with, a raptor would be a complete dog. CPCs make far better torque. this is also why the gt500 is CPC.

I'm not giving any rates. I'm relaying what I know about FPC engines and why the Voodoo motor is a fragile flower. All engines only produce torque- period. HP is just a calculated number.

 

[1roadking]

The voodoo motor has been less reliable then Ford hoped and it’s not recommended to add a supercharger to that motor. That’s why the new GT500 is not a FPC motor. Not all will have problems but it’s outside the acceptable failure rate. Buy the way, the power curve of the Voodoo would be awful for a heavy truck, but a large displacement super charged motor would be a lot of fun now that I am use to the Ecoboost it really is a great match to our trucks and makes huge TQ right where we want and need it. Even in the much lighter mustang the voodoo is soft at lower RPM’s. Drive one and you will understand.