staticGenerator
New member
Hello All,
I've been ruminating over supercharging my 2003 4.7l Dodge Dakota for a couple of years now. I'm hesitating over making modifications to the engine that are permanent or not easily removed (I have a warranty on a rebuilt engine for 5 years and I don't want to void it). In any case, there aren't any real outlets that cater to the Chrysler brand supplying SCs for these years, the only one I know of being Boosted Technologies, and they say their 1500 RAM kit will work with Dakota. However they say I'd have to make mods to the frame under the engine bay - not something I want to do. Also, their solution costs about $5K which is more than I want to spend.
This is not for racing. I live and haul with my truck in the mountains between 8K and 11K in elevation. My understanding is that we lose 3% HP per 1,000 feet in elevation, so at 8,000 feet I've lost almost 25% of my stock power. Here are my goals:
My questions are:
I'm open to any other approaches/suggestions. Thanks in advance!
I've been ruminating over supercharging my 2003 4.7l Dodge Dakota for a couple of years now. I'm hesitating over making modifications to the engine that are permanent or not easily removed (I have a warranty on a rebuilt engine for 5 years and I don't want to void it). In any case, there aren't any real outlets that cater to the Chrysler brand supplying SCs for these years, the only one I know of being Boosted Technologies, and they say their 1500 RAM kit will work with Dakota. However they say I'd have to make mods to the frame under the engine bay - not something I want to do. Also, their solution costs about $5K which is more than I want to spend.
This is not for racing. I live and haul with my truck in the mountains between 8K and 11K in elevation. My understanding is that we lose 3% HP per 1,000 feet in elevation, so at 8,000 feet I've lost almost 25% of my stock power. Here are my goals:
- Between 3.5 - 5psi boost. At 8K feet, 3.5psi would closely match the naturally aspirated power produced at seal level (the atmospheric psi at sea level is 14.7 psi, at 8K feet is 11 so 3.7 psi of boost would about match that of the naturally aspirated engine at sea level).
- Engage just above idol. I want the boost to start engaging as soon as the gas pedal is pressed. This will keep the boost on early and allow lower end torque, more important for towing.
- Build a supercharger following Alex's build, using a P-2 Centrifugal Supercharger and possibly the same BLDC motor.
- Limit the current draw to about 200A
- Looking at getting a used Chrysler generator/alternator (which puts out 48V and >200A) to power it
- Use a PWM boost controller something like this AEM Tru-BoostX Gauge-Type Boost Controller to send a PWM to the motor controller to keep the boost at 3.5-5psi
My questions are:
- Will the BLDC motor handle consistent power while driving, are they durable and able to handle the constant duty?
- What are other possible problems or drawbacks to this concept?
- Should I just buy an Eaton M90 SC, get a mounting plate fabricated, and forget about this whole electric SC idea?
I'm open to any other approaches/suggestions. Thanks in advance!