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Old 04-07-2011, 07:01 PM   #1
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Supercharged JK

Supercharged the Jeep - results are killer -

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Old 04-07-2011, 07:07 PM   #2
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Well ok, thanks for sharing. Which JK do you have?

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Old 04-07-2011, 07:15 PM   #3
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In what way. Were gonna Need Alot more than than that to even begin to take this serious. This is a touchy topic amongst the jk community. Theres Alot better things to do with 5 grand to a jeep than go alittle faster at an RPM range most don't ever really drive in.

This is not a mod that most people have any use for To begin with, never mind the cost and risk involved.
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Old 04-07-2011, 07:47 PM   #4
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Aww c'mon John. The RIPP product looks to be pretty incredible and produces some serious results throughout the RPM band on dyno tests. If it's "reasonable" to drop $15k+ on a Hemi conversion, it's "reasonable" to drop $5k for a supercharger.

NOW, that doesn't exclude the lack of pics or other data. This is a pretty big first post for the original poster. I'd like a little background . . . . (hint hint).
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Old 04-07-2011, 07:51 PM   #5
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I've noticed that in the Wrangler community only centrifugal superchargers are available. Why is that? This is the worst type of blower for a low speed vehicle that needs off the line torque. I've always wondered if any aftermarket vendor would create a roots or even twin screw blower for the 3.8 in the JK. Anyone know why?

My vehicle toy background was drag racing, the truck guys would always go with a torque setup rather than a high revving centrifugal blower. Sacrifice top end power for low end torque.
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Old 04-07-2011, 07:59 PM   #6
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Originally Posted by jk wrangler fan
I've noticed that in the Wrangler community only centrifugal superchargers are available. Why is that?
The RIPP guys are members here, though I'd not know if they're logged on in a while. They'd know. Anybody else?
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Old 04-07-2011, 08:10 PM   #7
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Yes it would be nice to see why they chose a centrifugal. Kenne bell made positive displacement blowers for the inline 6 in the tj, not sure why they haven't for the jk.

Kenne bell, magnacharger, eaton, whipplecharger, they're all positive displacement blower great for low end.
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Old 04-07-2011, 08:20 PM   #8
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It's strange, because I've mentioned this "ROOTS" sys several times in the last year and


YouTube - 2008 Jeep Rubicon Avenger Supercharger Kit DiabloSport Tuned by Servion Tuning

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Old 04-07-2011, 08:38 PM   #9
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If the chargers I'm aware of made power between 1000-2500 rpm I'm sure it would get alot more attention. Lots of rear wheel horses at 4200+ is useless to 99% of jeepers.

Love the idea but not the function. My jeep don't like fast it likes slow and steady. I often tell people it does better in the muddy wet trail dirt roads than in 5 inches of snow.
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Old 04-07-2011, 09:05 PM   #10
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I've spent way too much of my own adventures recovering from the costly thrills of going as fast as possible as much as possible everywhere possible...and then want more.

-~~I'm ready for the low gear low speed low RPM low end low down lonesome Wrangler rider blues~~~~
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Old 04-07-2011, 09:10 PM   #11
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You can keep it...if I want to drive a supercharged vehicle, I will take my Lightning for a spin....."literally".
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Old 04-07-2011, 09:21 PM   #12
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Not that I'm in position now to dump 5g into my jeep until the rest of my build is done. Thy said I have been following the supercharger idea simply for the fact I live in a hilly area where that extra go would be great. I have also realized the biggest gains are at rpm's that I do not see and do not want to have to see to get the results. I also have not seen a person that had a supercharger installed yet talk much about the impressive low rpm power or torque. Like I said this mod is not for me and I'm sure I'm speaking for most on this sight. The blower that some have spoke of that provides low end might peak my intrest by what I have seen by company's like RIPP I have lost intrest in. I also have a 6spd and no interest in fast so if I'm going up an incline I just drop to 4th or 5th and cruise along.
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Old 04-07-2011, 11:00 PM   #13
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Originally Posted by JIMBOX View Post
It's strange, because I've mentioned this "ROOTS" sys several times in the last year and


YouTube - 2008 Jeep Rubicon Avenger Supercharger Kit DiabloSport Tuned by Servion Tuning

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I just joined the site and am still clueless on jeeps but yes, i do agree with you if you had mentioned them before. I was into the car racing scene before i ever considered a jeep. The truck guys or heavy car guys would go roots or twin screw. Centrifugal was for those who wanted to spin some serious rpm.
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Old 04-08-2011, 06:41 AM   #14
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In what way. Were gonna Need Alot more than than that to even begin to take this serious. This is a touchy topic amongst the jk community. Theres Alot better things to do with 5 grand to a jeep than go alittle faster at an RPM range most don't ever really drive in.

This is not a mod that most people have any use for To begin with, never mind the cost and risk involved.
I could really use some more power and am thinking more and more often about either trading the Jeep for a Power Wagon or springing for a RIPP.

I drag this thing on long trips and live in a hilly area. Even with 4.56 gears and a Superchips Flashpaq, I can't maintain freeway speeds or get up hills. It's a factor of the bad low-end torque and an inappropriate autotrans.


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Old 04-08-2011, 07:31 AM   #15
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The centrifugal Vs. Roots thing is something I considered. I looked at the dyno and I noticed that around 3,000 RPM's the two started to meet when it came to power and torque. Then I had a buddy drive the Avenger system and my RIPPed Jeep. He said the RIPP system was much smoother.

The argument that Jeeps stay low in the RPM range and need a Roots blower is not valid IMHO. My Jeep had plenty of power offroad, it was getting to the trail that caused an issue. I made a before and after video to demonstrate how the Jeep stays in a very usable RPM range for a centrifugal blower. And, when I step on it, it gets more powerful and more powerful instead of falling off like a Roots unit.

Some will suggest that all I had to do was re-gear. Here in Colorado with the 8% grades and high altitudes, that wasn't going to do the trick. I couldn't maintain speed at any RPM range other than 4,500 plus. Have a look.

Before:


After:
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Old 04-08-2011, 08:24 AM   #16
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great before/after video.

Going from a R/T Charger, back to Jeep (was a previous owner), I am really struggling to adjust.
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Old 04-08-2011, 08:33 AM   #17
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thanks for the video.....what's the other running gear set up on your Jeep? I'm on the flanks of the Cascade Range and don't have the altitude issue.
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Old 04-08-2011, 08:44 AM   #18
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Any of the SC's are an improvement to the 3.8L, but

A less troublesome and everpresent positive addition, is the 4.88/5.13/5.38 gear ratio change, mainly because, with the lower ratios (5.13/5.38) when you're traveling on the hiwy you can still use the O/D and with an auto tranny, which is really a 3 sp/w 4th gear being the O?D-it's beneficial !

So in most cases, driven sensibly, gas mileage gets better---now

In my case auto/rubi, most of my time is spent off-road and it's not a DD and thats a major CONSIDERATION for any eng/diff changes, so the 5.38 gear chg is the one that appeals to me and I'll do that before summer, along with ball joint replace to Synergys-

Towing my trailer (hiwy),is acceptable-without O/D. but long hills are still a problem and thats why the gear ratio chg--- and

Another thing about the JK/JKU, their CPM/CPU system is completely unpredictable and RIPP as of NOW, has the best managed SC piggyback sys-almost trouble free-but

I'm going with the gear chg !!

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Old 04-08-2011, 08:55 AM   #19
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talking out of my butt...., but i fully expect the new pentastar engine to be equipped with a turbo or twin turbo set up, think ecoboost, from the factory in a few years. possibly a 4 cyl version. this will give us low end torque, more power for on road and better mpg. this is why i have not even thought about a super charger mod. combine this type of engine with a better trans and we will have it all, diesel like preformance, better mpg and for those that need it, better road speeds.
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Old 04-08-2011, 09:12 AM   #20
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Well, my car has variable valve timing, direct injection, a turbo, and over 200 ft.lbs. torque in overboost. It gets 42 mpg on the highway.
From a 1.6L mill.

The 3.8L squirrel we have is a transitional piece of junk at best.
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Old 04-08-2011, 04:28 PM   #21
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The RIPP guys are members here, though I'd not know if they're logged on in a while. They'd know. Anybody else?
Guys - when we approach a community - we are always taken as salesmen - In reality we are is extremly good standing in every JK support forum. Our solution is turn key, safe and effective from low to high RPM...

We over sized the blower and take advantage of the air volume as well as the boost. Our system acts more like a light pressure turbo most of the time, where you use 2-4psi on your normal driving routine and 4-8psi when needed.

We have many clients who tow and are very happy with the results we deliver - A positive displacement blower will always blast the engine with boost even when you only want to tip into the throttle for speed control. The centrifugal's natural boost curve is much smoother and therefor predictable off road and gentler on the engine and a whole.

Stop the video at 1.50sec and see we are nearly doubling the torque at 1300 rpm - compared to stock.

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Old 04-08-2011, 05:12 PM   #22
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Guys - when we approach a community - we are always taken as salesmen - In reality we are is extremly good standing in every JK support forum. Our solution is turn key, safe and effective from low to high RPM...

We over sized the blower and take advantage of the air volume as well as the boost. Our system acts more like a light pressure turbo most of the time, where you use 2-4psi on your normal driving routine and 4-8psi when needed.

We have many clients who tow and are very happy with the results we deliver - A positive displacement blower will always blast the engine with boost even when you only want to tip into the throttle for speed control. The centrifugal's natural boost curve is much smoother and therefor predictable off road and gentler on the engine and a whole.

Stop the video at 1.50sec and see we are nearly doubling the torque at 1300 rpm - compared to stock.

RIPPTECH

Thank you for posting!

Believe me I'd rather get some info straight from the source. Internet feedback is always nice but you want to hear it from the horses mouth, excellent point on the sudden spike in boost. Numbers at low rpm are VERY respectable.
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Old 04-08-2011, 06:28 PM   #23
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I've made my decision to purchase a RIPP supercharger for my Black Ops. Probably not until the end of this year or the beginning on next.....but I will have one, oh yes, I will have one!
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Old 04-09-2011, 05:53 AM   #24
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thanks for the video.....what's the other running gear set up on your Jeep? I'm on the flanks of the Cascade Range and don't have the altitude issue.
I am running 4.10's on a manual trans.
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Old 04-09-2011, 07:24 AM   #25
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someone mentioned going from an r/t charger to this and its an adjustment, i was driving a Trailblazer SS awd, so i am down 200hp from what i was driving. I knew what i was getting....a brick w/ a low hp engine. I am getting several mpg better in the city i havent done much hwy driving yet. what i did get was the only 4 door production drop top in the world, ok and some great 4wd ability(which the TBSS had none). If i want speed and handling i will drive my other car another Mopar drop top w/ a V-10.
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Old 04-09-2011, 07:30 AM   #26
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Thanks, Ross.
I'm still on the fence. Gotta do something soon though...
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Old 04-09-2011, 07:34 AM   #27
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the pentastar engine coming out for 2012 will be around 295hp a near 50% hp increase
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Old 04-09-2011, 07:43 AM   #28
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the pentastar engine coming out for 2012 will be around 295hp a near 50% hp increase
if it is tuned the same as grand cherokee, all the torque is at the higher end of the rpm scale not where it is needed when off road. this is from jeep grand cherokee forums. they also complain about being some what slow off the line. can't speak for anyone else, but i'm not looking for more top end speed, rather stick with the 3.8.
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Old 04-09-2011, 06:20 PM   #29
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Thanks, Ross.
I'm still on the fence. Gotta do something soon though...
"soon" was this afternoon and I'm "off the fence".



Man, this thing can climb hills. Breakover angle sucks a little but I'll get used to it. Already rubbed the skidplate pretty hard --- scared the willies out of the poor salesman I think.

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Old 04-09-2011, 06:29 PM   #30
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What ever happened to the OP of this post. Makes you wonder if this is a (get your attention again) thread. First post? Sure he/she will pipe up agian now. Or not . Defiently got the super charger talk stirred up again so I guess it worked.

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