Ripp Supercharging my 2014 3.6 Grand Cherokee - Page 10 - Jeep Garage - Jeep Forum

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  #109  
Old 08-30-2015, 12:40 PM
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Quote:
Originally Posted by Keysplayr View Post

Thanks! good info.

That's what I was afraid of. 450nm on the 845RE is 331lb-ft.

845RE / 8R70: ZF 8-Speed Automatic Transmission for Chrysler cars

So, the last dyno run on that supercharged 3.6 shown 394 HP at the wheels and about 350lb-ft of torque. That is over the spec for the 845RE.


I can only imagine that the next modification to that particular jeep would be the exhaust system which will up the HP and torque even more. I don't mean to cause alarms, but I do also like to be informed about limitations.

Side note: I can confirm the crappy shifting my 2015 had before I complained to the dealer and they reprogrammed it.
I nicknamed the transmission "Bangarang" as it would constantly clank and bang trying to find the proper gear it should be in.
Since the programming though, it has been a thousand percent better. I don't even notice it shifting anymore. But i was so upset the first few months driving this thing.
I think the 450nm rating is at the shaft not the wheels so the loss to the wheels would hsve to be calculated in also which actually makes it worse. But i think one of the posts farther back talks about that some. If i remember correctly it was something about how the SC brings the power on to the trans more slowly which is easier on the trans instead of just hitting it all at once which is harsher. Still i hear what you are saying the trans spec is being exceeded by a fair amount. Cool to see those numbers on the 3.6 though

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  #110  
Old 08-30-2015, 03:09 PM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Quote:
Originally Posted by silvermax04 View Post
I think the 450nm rating is at the shaft not the wheels so the loss to the wheels would hsve to be calculated in also which actually makes it worse. But i think one of the posts farther back talks about that some. If i remember correctly it was something about how the SC brings the power on to the trans more slowly which is easier on the trans instead of just hitting it all at once which is harsher. Still i hear what you are saying the trans spec is being exceeded by a fair amount. Cool to see those numbers on the 3.6 though
Oh yeah those numbers are amazing. Beyond SRT numbers.

But seeing as how the factory warranty on the power train is probably out the window after this RIPP installation, the owner should consider beefing up the rest of the powertrain to cope. A slower onset of power should reduce the shock of torque as you say, the supercharger is centrifugal and doesn't boost until certain rpms. That surely helps.
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  #111  
Old 09-01-2015, 08:36 AM
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Ripp Supercharging my 2014 3.6 Grand Cherokee

Quote:
Originally Posted by Keysplayr View Post
I think this is an important question, seeing as how the RIPP supercharger is essentially putting more than twice the original HP of a 3.6 through the powertrain. I know I'd want to have the same tranny as the SRT does.

The 2011-12 Grand Cherokee 3.6 does have the same trans as the SRT. (W5A580)

I think it's important to note that there is a base kit sold that is 6-7 PSI, which delivers good power and is well within the capabilities of both transmissions.

That "Stage 2" (for lack of a better term) is still being developed, but once it's done I'm definitely upping the boost on mine! I have almost 80k miles on my Jeep, 3k miles on the Ripp kit, romp on it every time I drive it.



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  #112  
Old 09-04-2015, 09:00 PM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Quote:
Originally Posted by mjb4334 View Post
The 2011-12 Grand Cherokee 3.6 does have the same trans as the SRT. (W5A580)

I think it's important to note that there is a base kit sold that is 6-7 PSI, which delivers good power and is well within the capabilities of both transmissions.

That "Stage 2" (for lack of a better term) is still being developed, but once it's done I'm definitely upping the boost on mine! I have almost 80k miles on my Jeep, 3k miles on the Ripp kit, romp on it every time I drive it.



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Those are six speeds right? I think my buddy has the six speed in his 2012 hemi.
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  #113  
Old 09-05-2015, 02:52 AM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Nope those were 5 speed I believe Upto 2013 models
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  #114  
Old 09-05-2015, 05:24 AM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

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Originally Posted by kar1zma View Post
Nope those were 5 speed I believe Upto 2013 models

You are correct


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  #115  
Old 09-05-2015, 09:11 AM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Interesting. I just confirmed with my bud. His 2012 hemi GC has the six speed. 3.6's had the 5 speed huh? Weird.
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  #116  
Old 09-27-2015, 10:31 AM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Gmgc2014, any update on how shes holding up with the added boost?
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  #117  
Old 10-02-2015, 10:58 AM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

I've been anxiously awaiting the release of the Stage 2 Kit for the 3.6L myself,,,

My jeep is starting to feel slow again and I could really use the Extra Power...so far I have about 8K miles on my supercharged system and its running great overall...I did have to replace the belt once as the original Gates belt stretched out and was squealing like CRAZY...

I put a new Goodyear Gatorback belt on and its been perfect ever since

$25 fix...aside from that all good ...but I'm only running 7lbs ...and putting down 330AWD WHP
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  #118  
Old 10-02-2015, 03:02 PM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

How long do you plan on keeping the car?
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  #119  
Old 10-02-2015, 04:56 PM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

Quote:
Originally Posted by ufokillerz View Post
which non-factory kit offers a engine/powertrain warranty?

The Edelbrock E-force SC kit from Modern Muscle, if installed in a new vehicle comes with 3 year 30,000 mi. coverage, but only the kit is covered, not the drivetrain.
This is a very nice kit, proven on tons of other applications and they are getting 471 WHP / 475 Torque with a 5.7. 5.7L HEMI E-Force Supercharger by Edelbrock - Hard Core Hemi Parts
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  #120  
Old 10-02-2015, 05:07 PM
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Re: Ripp Supercharging my 2014 3.6 Grand Cherokee

I'm selling this one and going to an Srt in the spring

Just waiting for the hell cat
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