RIPP vs. Magnuson...SuperCharger Shootout!

[KaiserBill]

It's all theoretical for application on the Jeep Wrangler. Getting a one-off complex system like that custom built and tuned as an add-on is impractical.

Well, if you stick with stuff from kits and boxes then you will never really know the joy of blazing a new trail. But if you want a bolt on kit to increase your turbo's power, fuel economy, and overall performance from pump gas-- Snow Products Methanol-Water Injection system. It will set you back about $1K plus tax and shipping-- but it will give you about 80Hp and 50-80Ft-lbs of torque in the max settings in addition to your turbo ratings--plus in the eco-setting an increase in fuel economy of about .15-.25mpg.

So if your kit gives you 120Hp and 100Ft-lbs of torque extra adding MW-50 to the system can put you up to 200hp extra 150-180ft-lbs of torque depending on application.

I call it WEP-- as in Wartime Emergency Power-- I'm putting on a CAT 3116 engine I'm installing in my baby. Cruise power with MW-50 will go up from about 170hp to 210hp and max power right about 300hp at 2700rpm. Torque will be about 620ft-lbs max at 1550rpm and cruise torque right about 320ft-lbs at 2400rpm with the Methanol injection operating.

[UselessPickles]

Cruise power with MW-50 will go up from about 170hp to 210hp and max power right about 300hp at 2700rpm. Torque will be about 620ft-lbs max at 1550rpm and cruise torque right about 320ft-lbs at 2400rpm with the Methanol injection operating.

All that "low rpm" torque doesn't really mean that much when the engine only revs up to 2800 rpm. If you gear it to give it similar road speed range in each transmission gear as a stock Wrangler with a Pentastar, then it would be equivalent to having a peak torque of 267 ft-lbs at 3600 rpm, and only 137 ft-lbs torque at 5600 rpm. The stock Pentastar already has 250+ ft-lbs torque from about 2000 rpm all the way through 5400 rpm. But you probably wouldn't gear the vehicle that tall (probably not physically possible... would require something like 1.60:1 axle ratio), so you'd end up with VERY short gears, with tons of torque at very low speeds. The first few transmission gears would probably be useless for street driving in 2HI, and 4LO would be useless except for the slowest of slow rock crawling.

These low-revving, huge low-rpm torque diesel engines are designed continuous high-load work in construction equipment, or getting very heavy loads moving from a stop (loaded up semi trucks, etc).

Just want to make sure you understand what you're getting yourself into.

[UselessPickles]

max power right about 300hp at 2700rpm... and cruise torque right about 320ft-lbs at 2400rpm with the Methanol injection operating.

These numbers make no sense. To have 300 hp at 2700 rpm, that would require 583 ft-lbs at 2700 rpm, but you say that at 2400 rpm, the torque has already dropped to 320 ft-lbs. Time to revisit your numbers/assumptions