Thinking of selling RIP Supercharger...
JK Super Freak
Joined: Jan 2008
Posts: 1,412
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From: Mint Hill, NC
...i mean..I'm just sayin
Thread Starter
JK Enthusiast
Joined: Jun 2007
Posts: 167
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From: Georgia from NJ. Jersey blows!
I think it would be just right for what you are using it for Medbender.. Highway hills that need you to keep RPM's up. It does have a nice smooth constant pull up top, but not around town daily driving. Is it less than a hemi swap, yep, but long term... dunno.
SO, I am learning of ways to use it. But again I dont RIPP on the JK, not built for speed or mashing to the floor, my other cars are.
It is an auto also.
Merry Christmas to everyone and stay safe n healthy ya'll!
SO, I am learning of ways to use it. But again I dont RIPP on the JK, not built for speed or mashing to the floor, my other cars are.
It is an auto also.
Merry Christmas to everyone and stay safe n healthy ya'll!
JK Enthusiast
Joined: Aug 2008
Posts: 105
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From: Upton, MA
This is wrong about SC's, a roots/twin screw type blower will build power almost instantaneously and carries it all the way to redline on any vehicle. Only the centrifuguals take time to build power/boost. You are right about a centri not being a trail friendly blower, as we are usually going slow. The Centri's would be good for mud bogging or the dunes though..
Both blowers are great, but the power band is completely different. I have driven both types in Mustangs/Lightnings/Cobra's. I have the roots blower on my Cobra's, and I can assure you the power is instantaneous. I almost get full boost even at 1000 rpms for tire shredding HP.
Both blowers are great, but the power band is completely different. I have driven both types in Mustangs/Lightnings/Cobra's. I have the roots blower on my Cobra's, and I can assure you the power is instantaneous. I almost get full boost even at 1000 rpms for tire shredding HP.
JK Newbie
Joined: Jan 2009
Posts: 15
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From: Prairieville,La
I dont see a Turbo good for any off-road vehicle. What happens when you are doing a slow technical climb ? Spooling up would not be a good thing. At least in my experience. I've been wheeling Jeeps for 15 yrs. now and just remember spots that I would not want spool-up. On a street vehicle it would be fun though. I love Turbo vehicles. I am currently building a '08 4 Door Rubicon for my brother-n-law and sister. Spent 20K already and I am at that point to either go RIPP or AEV 5.7 Conversion. It has an Auto so I'm trying to gather as much info on the RIPP SC & Auto as possible.
Sponsoring Manufacturer
Joined: Jul 2007
Posts: 1,189
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From: New York
We are a turbo shop, we've built many high horse power cars (Supra's, Skylines, 240's etc...) gt40's and 42, turbo motor swaps. Everything we work on is forced induction. We have also manufactured supercharger kits for 3rd and 4th generation Mitsubishi motors for the past 6 years. Also designing a handful of one off custom set-ups.
Adding a turbo on the 3.8 will dramatically stress the motor. Turbos depend on back pressure and an enormous amount of heat, that's the last thing you need crawling back into the block when your 20 miles off road. You need something that's fail-safe, reliable, and predictable. Functionality is everything, as far as forced induction goes, supercharged is the way to go for this application.
JK Enthusiast
Joined: Aug 2008
Posts: 105
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From: Upton, MA
Well what I had in mind was a very small turbo like a Mitsu T25 wastegated to 3 or 4 psi of output. Spool would be near non existant and there through the entire RPM band. Of course like I said it would be more trouble than it's worth. Backpressure, maybe. You're not running super high boost or heat at that point but again, my main concern would be soaking the hot side of the turbocharger and cracking the wastegate housing. High water and puddles would be a concern.
There have been plenty of Turbo's jeeps out there. Someone must have some better experience.
There have been plenty of Turbo's jeeps out there. Someone must have some better experience.
JK Enthusiast
Joined: Aug 2007
Posts: 378
Likes: 1
From: Ft. Irwin, CA (But Willamsburg VA is home)
We are a turbo shop, we've built many high horse power cars (Supra's, Skylines, 240's etc...) gt40's and 42, turbo motor swaps. Everything we work on is forced induction. We have also manufactured supercharger kits for 3rd and 4th generation Mitsubishi motors for the past 6 years. Also designing a handful of one off custom set-ups.
Adding a turbo on the 3.8 will dramatically stress the motor. Turbos depend on back pressure and an enormous amount of heat, that's the last thing you need crawling back into the block when your 20 miles off road. You need something that's fail-safe, reliable, and predictable. Functionality is everything, as far as forced induction goes, supercharged is the way to go for this application.
Tuning the PCM to reduce spark, increase fueling would be a pain in itself (no publically available aftermarket programs). Would have to use a stand-alone like the BigStuff3 or Accel for DIY. Those are big $$. Probably would need aftermarket fuel pumps at higher boost and then run into pushing water from the head gaskets, rings possibly cracking, etc.
It would be cheaper to swap a Hemi all said and done.
BTW, I'm sure RIPP is using meth both to compensate for needing more fuel (methanol increases octane) and to reduce IAT's. That and the supercharger is making boost at a much lower RPM.
Just my $0.02
Sponsoring Manufacturer
Joined: Jul 2007
Posts: 1,189
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From: New York
Yeah, rear mounted turbo's are a PIA, so many variables.
The Meth is not for "more fuel" (if that was the case we would just adjust our tunes for more fuel 
) The Meth insures an ICE cold intake charge, and intercools; without having a Front Mount (which is susceptible to heat soak, off-road debris and causes a slight lag). The Meth also prevents detonation and keeps EGT's (exhaust gas temps) way down.
its a great little system, works like a top.
) The Meth insures an ICE cold intake charge, and intercools; without having a Front Mount (which is susceptible to heat soak, off-road debris and causes a slight lag). The Meth also prevents detonation and keeps EGT's (exhaust gas temps) way down.its a great little system, works like a top.