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.
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.Originally Posted by UselessPickles
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.
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.
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
Being an early adopter of a new turbo kit is enough trail blazing for me. Water/meth injection added onto a Pentastar turbo/supercharger kit might not be that simple. I think we're at the point where another major jump in power will require supporting internal engine upgrades to be reliable. I'll sit back and let Prodigy risk blowing up an engine or two as they develop their stage 3 kit
You're putting that CAT engine in your Wrangler? Create a new thread for that!
Dry weight: ~1500 lbs
+7.4 GALLONS of water for the cooling system (~62 lbs)
+6.6 GALLONS of oil (~48 lbs)
Wet weight: ~1610 lbs!!!!
For comparison, the Pentastar...
Dry weight: ~325 lbs (based on finding the 3.8 weighs 413 lbs, and Pentastar is claimed to be about 90 lbs lighter)
+10.5 quarts of water for the cooling system (~22 lbs)
+6 quarts of oil (~11 lbs)
Wet weight: ~358 lbs
That CAT engine weighs 1250 lbs more than the Pentastar! That's going to require some heavy duty front suspension upgrades to support that weight, and will make the vehicle very front-heavy. That could be dangerous. And your predicted crank HP with water/meth injection added is not much more than what the stock Pentastar already puts out. All that low RPM torque will allow you to crawl over anything without touching the gas pedal, but daily driving performance on the street will be worse than the stock engine.
CAT's output numbers are what I based my figures on. What it really produces I won't know until I dyno the engine.
Is this a "Shootout" thread? seems off topic
Last edited by boosted1; 09-01-2015 at 07:30 PM.
sounds like a turbo guy is salty about a SC thread. lol
Orr..... The thread discussing installing a CAT engine in your Jeep is actually off topic.
This thread needs a do-over. We need a very rich person to donate several identically equipped Wranglers and one of each of the forced induction kits so that a full and fair comparison can be done on everything from the install difficulty to performance
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