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Forced Induction: What can the 2015 Block Handle?

22K views 71 replies 30 participants last post by  New2012JEEP 
#1 · (Edited)
Just a general question, for those IN the know.

I am working on pricing and picking up a ProCharger, because that is what I want. I do not want a root style this time around.

http://www.procharger.com/jeep_jk.shtml

I am absolutely not running it wide open, not even close, but I am interested in pumping a few extra pounds through it. Think 4 to 5 psi, etc.

Enough of a boost to put me closer to the upper 300's.

Thoughts, opinions, or clinical facts anyone can share?
 
#2 ·
My opinion is that I will be very jealous and want to see the build. I have no exp with FI outside of the LS6 corvette world, but would think that low boost would not be too terrible. 100hp add?
 
#6 ·
I'd be interested in hearing what comes of this. I've been waffling between a turbo or a procharger for my LQ4, but didn't know they made a kit for the jeeps.
 
#10 ·
Ripp Superchargers use the Vortech centrifugal style supercharger. Worth checking out it you don't want to fab up all of your own stuff. Good research anyway. Base kit is running 5psi or so with excellent results.

Myself, I'll probably end up going turbo at some point. Ran an STS on my Trailblazer SS and hands down that thing was the most fun I've had on 4 wheels, even over my 04 Cobra.
 
#11 ·
As currently designed (ie-open deck block), the 3.6 Pentastar is NOT a good candidate for 'bolt-on' forced induction systems.

Any 'bolt-on system' available will provide insufficient boost pressure-to avoid cylinder shifting issues (sans cyl blocking, which is not a simple 'bolt-on' task), as to make any slight H/P gain not worth the investment for anyone but the braggart concerned with bragging rights.

There are many threads on this forum discussing this..
 
#25 ·
An open-deck block isn't ideal for forced induction, but I would wager that it would take a fairly high level of boost before anything evil would rear its head. More than likely a rod or piston would fail before the block. Of course, who knows where the limit is on any of it.....

My GT500 was running 12 PSI and would probably have run forever at that boost level. I personally know a guy with a Ford GT pushing 38 PSI and 1500+ WHP, and still running the stock block. Apples to oranges I know, but an interesting comparison.
 
#26 ·
MasterTech
Really RIPP?? no cylinder blocking required?
Hmmm, do you mean "sleeving" a engine block? Actually no, we are not putting 20+ psi through this engine, there isn't any worry about bore movement.

are your 'consistent' h/p ratings from a reliable/verifiable unbiased independent testing source? may we see them? what about engine longevity using your system?
Innovative Diesel 2012 Jeep Wrangler Supercharger Project - YouTube
All we could come up with for 3.6L independent dyno, Plenty out there on our 3.8L
With close to 1000 3.6L RIPP Supercharged JK's out there now, we have not had any feedback regarding reliability issues.

how about the posts involving issues regarding your system-might they be growing pains/poor execution at the expense customers??
Well, Being your ASE Master certification, not sure why I need to delve into Chrysler Individual Cal ID protocols, PCM updates, Revised electronics and parts with you...
There are slight variations from build date to build date that can only be accounted for with feedback from the end user. From our first beta test, to this point we now have over 90% of the variations acounted for, and preloaded into our included Diablosport. From time to time we need to make adjustments based off of a data log received from the end user.

Kindly advise as to why your bolt-on system appears, by your claims, the only 'excellent candidate' for open deck engines which are otherwise understood everywhere else in the repair/racing industry as 'poor candidates' for bolt-on forced induction systems? I mean other than as a profit generator for you.
We don't know, maybe you can shed some light on it, being that we have sold more than 4000 Supercharger systems for the JK and a CARB EO#. Could it be that we deliver what we advertise? Ok rant over..
An open deck design is in no way Ideal for HIGH BOOST LEVELS. But no problem for the nominal 8psi we are adding.

I'm Including a few OEM open deck FORCED INDUCTION applications.

Subaru EJ205 (2002-2005 Subaru WRX) 2.0L 4cyl (boxer) Turbo 13psi 8.1:1 CR

BMW N55 (2009-CURRENT 3 series 5 series 6 series 7 series) 3.0L Inline 6 Turbo 7-10 PSI 10.2:1 CR

BMW N20 (2011-current 3 series) 4Cyl I4 10.1:1 CR 17psi

RIPP
 
#30 ·
Hmmm, do you mean "sleeving" a engine block? Actually no, we are not putting 20+ psi through this engine, there isn't any worry about bore movement.
Nope, was referring to any type of block/cylinder guard.. Block Guard - Performance Block Guard

But if you didn't know what they are, I gotta wonder why you're even involved with forced induction systems...

If such significant performance gains (and associated mpg gains) were reliable & as simple as bolting on an FI system to the current 'as it sits' Pentastar, why isn't Chrysler/Fiat doing it?
 
#27 ·
There's nothing inherently bad about an open deck design, you just can't run as high a level of pressure as a semi or closed deck. Making generalizations is completely pointless given that there are various materials used in block manufacturing and different wall/support thicknesses.
 
#28 ·
BTW - back to the original question of how much boost the Pentastar can handle...

Have you considered calling the manufacturers that already have complete bolt-on forced induction kits available for the Pentastar (RIPP, Magnuson, Sprintex, ProCharger, Prodigy, STS)? Ask them about what kind of testing they've done to determine that their boost levels are safe, and what they think the upper limit is. They're the ones that would know best, since they're the ones with experience developing forced induction for this engine.

I know that Prodigy has successfully tested with higher boost levels than they officially support with their kits, so they've intentionally left some room for a margin of safety. I would expect that all the manufacturers have done something similar.

I am absolutely not running it wide open, not even close, but I am interested in pumping a few extra pounds through it. Think 4 to 5 psi, etc.
There's no simple adjustment to control the boost on these. That would require a larger pulley wheel (might require custom fabrication if such a pulley is not readily available), and possibly a completely custom tune. Getting technical/warranty support from ProCharger could become difficult with such a modification. You should discuss this idea with ProCharger before making any plans.
 
#33 ·
I like how ASE_MasterTech just completely avoids acknowledging counter-points and evidence that disagree with his statements and, with each new post, moves further and further off topic from the original claims that he made. Your smoke and mirrors won't fool us :)
 
#35 ·
Ive seen guys run waste gated procharger setups. Run a higher boost pulley, waste gate it it dump at whatever psi you want the motor to see. I personally ran a procharger d1 on my 2008 Bullitt and loved every minute of the 500 rwhp it produced..

And the neighbors hated the blow of valve....
 
#37 ·
Had to post. This thread is asinine. ASE_Mastertech is clearly uninformed and likely under-educated. Doubting any automotive certification is actually held.

RIPP knows their stuff and has posted objective evidence.

/facepalm
 
#41 ·
Wow... Friendly thread! Here is a random picture of my dog chasing a RC car. At least he is smiling...

 
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