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Old 08-30-2010, 02:24 PM   #1
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Super chargers

anybody done one to their JK 3.8 or know of anyone that has, how to you like it. and how is your mpg's. im seriously think about getting one.

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Old 08-30-2010, 02:26 PM   #2
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Its been done. I personally don't think they belong in a Wrangler.
RIPP Modifications Supercharged JK - JeepForum.com

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Old 08-30-2010, 02:38 PM   #3
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Its been done. I personally don't think they belong in a Wrangler.
RIPP Modifications Supercharged JK - JeepForum.com
i know its been done. the reason i ask is i spend a month every year in colorado and know first hand about the lack of horse power at 6 thousand plus feet my 100 hp harley feels like a moped. my supercharged pontiac and my twin turbo F 350 DO NOT SUFFER there is no change in performance. i know i could regear and turn a lot of rpm's loose mpg's, or spend the same amount of money and get a super charger.
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Old 08-30-2010, 02:45 PM   #4
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But if you plan to offroad it, the supercharger is going to suck in all the crap in the air on the trail into the combustion chamber. That is not good for the engine lol. If you aren't going to offroad it, go for it.
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Old 08-30-2010, 02:52 PM   #5
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I've seen the RIPP Jeep before and I don't understand why they used a centrifugal blower. Those types of blowers are made more for top end power, making more boost higher in the rpm band. In other words, they're more suited to cars that get run higher in the rpm band on a regular basis. BUT, you can drive a lot of centrifugal blowers around normally and not even make boost, so the change in mileage is negligible if you keep your foot our of it.
I would have done a roots-type blower, like you see in many factory applications (Mustang Cobra/GT 500, Ford Lightning, Corvette ZR-1 and your Pontiac) as they make tons of low end power, where a Jeep needs it. I'd rather have on demand torque than high rpm horsepower while on the trail. They also tend to last a lot longer than the centrifugal style, hence the use on factory applications.
Boosted motors make their own atmosphere, so changes in elevation don't have as much affect on them.
Either way, a turbo is more efficient, has more power potential and can typically be done cheaper on a street application.
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Old 08-30-2010, 03:06 PM   #6
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RIPP SS is the only well developed supercharger for the JK and it doesn't have any trouble with the JK ECM system-

It produces good extra power when you're cruising at HIWAY speeds--passing--climbing hills-sudden bursts of power, but

It is has no advanyage for OFF-ROAD use !!

The AVENGER "ROOTS" style sys, uses a Supercharger that provides useable extra power at just about all speeds/rpms, but

They can't get the "piggyback" ECM programing systems to operate with the JK computers, maybe soon, but not yet !!

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Old 08-30-2010, 03:10 PM   #7
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RIPP SS is the only well developed supercharger for the JK and it doesn't have any trouble with the JK ECM system-

It produces good extra power when you're cruising at HIWAY speeds--passing--climbing hills-sudden bursts of power, but

It is has no advanyage for OFF-ROAD use !!

The AVENGER "ROOTS" style sys, uses a Supercharger that provides useable extra power at just about all speeds/rpms, but

They can't get the "piggyback" ECM programing systems to operate with the JK computers, maybe soon, but not yet !!

JIMBO

that's like the new hemi cars for the first few years. only piggy back tunes for the blowers. lots of them went boom.
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Old 08-30-2010, 03:18 PM   #8
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Although, I haven't considered getting the RIPP system--this year !


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that's like the new hemi cars for the first few years. only piggy back tunes for the blowers. lots of them went boom.
There's a possibility, in the near future, because of hiway/hills/mountains, when I'm pulling my trailer and the higher rpm boosts, would come in handy !!

They've just semi-perfected the RIPP 2nd gen, for the JK's and I will give it some time--

I'd rather take a chance on that, than a NEW PENTASTAR and new JKU--

JIMBO
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Old 08-30-2010, 03:21 PM   #9
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You still want a roots-style blower for towing. Diesels do so well towing because of all the low end torque, not top end horsepower. You're still making boost at higher rpms with a roots blower, just not as efficiently at a centrifugal blower will.
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Old 08-30-2010, 03:45 PM   #10
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My TJ has had an Avenger supercharger for 7 years. Never had a problem with it and love the performance, I would highly recommend Avenger.
I know they have one available for the JK. I would suggest contacting them.
(Just read the post about getting them to work with the computer in the JK...I wasn't aware of that)
Maybe contact them anyway, their customer service is outstanding.
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Old 08-30-2010, 05:45 PM   #11
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Quote:
Originally Posted by pakman55 View Post
But if you plan to offroad it, the supercharger is going to suck in all the crap in the air on the trail into the combustion chamber. That is not good for the engine lol. If you aren't going to offroad it, go for it.
The supercharger won't suck in any more crap than the air filter media allows. Use a good filter and it won't be a problem.

I love superchargers. Nice steady boost when you need it.
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Old 08-30-2010, 05:58 PM   #12
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The supercharger won't suck in any more crap than the air filter media allows. Use a good filter and it won't be a problem.

I love superchargers. Nice steady boost when you need it.
True.
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Old 08-30-2010, 06:15 PM   #13
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A supercharger has a great applicability on the trail. Low end torque, uses air filters (not like a race blower on funny cars) so you wont have any particles in the system more then usual, and they are ready at low RPM's. Unlike turbo's in which you have to spool the system to atleast around 2k or more to get an affect.

I'd rather have controllable boost at the throttle, then a potentially dangerous hit of boost when you really dont need it. Go for it if you have the cash!
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Old 08-30-2010, 07:27 PM   #14
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Quote:
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My TJ has had an Avenger supercharger for 7 years. Never had a problem with it and love the performance, I would highly recommend Avenger.
I know they have one available for the JK. I would suggest contacting them.
(Just read the post about getting them to work with the computer in the JK...I wasn't aware of that)
Maybe contact them anyway, their customer service is outstanding.
the avenger is what im looking for. i check out there web site and it will be avaiable soon.
Quote:
Originally Posted by IndyJeepMan View Post
A supercharger has a great applicability on the trail. Low end torque, uses air filters (not like a race blower on funny cars) so you wont have any particles in the system more then usual, and they are ready at low RPM's. Unlike turbo's in which you have to spool the system to atleast around 2k or more to get an affect.

I'd rather have controllable boost at the throttle, then a potentially dangerous hit of boost when you really dont need it. Go for it if you have the cash!
cash is not a problem i would like to do a hemi conversion, but no jeep for 6 weeks. i cant go that long with out a daily driver.

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