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  #37  
Old 05-19-2014, 08:11 PM
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Maybe a noob type question, but here goes.. So you say the transmission is rated for 700 bhp, but what about torque ratings?

Also, if the rig only has about 400 bhp stock, why rate it that much higher if they don't sell you bolt ons from the factory that can push it that much higher? Warranty?

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  #38  
Old 05-19-2014, 08:43 PM
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Re: Bit by the supercharger bug

Quote:
Originally Posted by P-Dawger View Post
No worries have been following those threads with keen interest, and contacted them, just saying that repeated drag strip launches, for the weight, something has to give. Even the mighty SRT is not immune to physics. Highway rolls - no issues and even track time, but launches are tough on non-forged internals.
Quote:
Originally Posted by P-Dawger View Post
I have seen this guy a bunch at C&C in Great Falls. Truck sounds mean. After looking over the install my guess as to what driveline components to fail first would be:

Tranny, CV's...then a bent crank in that order...

Sending massive amounts of Tq through an AWD system that was not designed for an error factor is not good, and not cheap.

Oh, if you add 22 inch cast leg irons on there I expect you get less than half of those launches (at least this guy is running stockers)...before stuff starts slipping and bending, internally.
We don't disagree, anyone beating the crap out of their own vehicle over and over will eventually break something... But we are trying to keep things as transparent and safe at the same time.

At 5psi non of what you're saying is going to happen -
  1. piston pressure is low
  2. We're leaving HP/trq on the table to gain reliability
  3. we're not pushing that much timing or aggressively
  4. We monitor all factory safety parameters and work actively with our tune to assure engine reliability
  5. Compressor sizing is perfectly matched to the engines capacity therefore power pours on progressively as apposed to positive displacement blowers which pour on power like a ton of bricks. Subsequently that type of blower is pron to breaking drive-train and rotating assemblies as you mentioned.


Quote:
Originally Posted by DanMartin View Post
The 8HP70 Transmission is rated at 700lbs/ft torque.

ZF 8HP transmission - Wikipedia, the free encyclopedia

There is an 8HP90 that is rated at 1000lbs/ft (or therabouts). I can't find the article, but IIRC the innards are physically the same as the 8HP70, but made of stronger materials, so (theoretically) drop-in upgrades may be available either in parts or entire transmission form.

Half shafts and CVs were strengthened this year I thought as well.

Of course as power goes up, reliability goes down. It will all come down to the weakest link. However, if the part is being used within it's design limitation, it's installed correctly, maintained properly, and is not defective it will hold up.

There's quite a few big power SRTs out there (WK1 and WK2) that hold up quite well. I'd be willing to bet that 600hp is well within the limits of the drivetrain platform.

I will say that I am worried about the pistons on these beasts. The low-drag type pistons with the thin upper ring lands typically do not hold up well to supercharging. Just ask the GM-LS folks who have broken ring lands from even a little bit of detonation (LS series engines typically run a bit hotter on the rear pistons, so you'll see #7 and #8 with chunks missing). Basically the tune needs to be extra-safe on timing and meth injection isn't a bad idea either on a stock bottom end.

Personally I'm watching the RIPP supercharger threads closely. I like the design and the approach....might be a customer once they get a tune for long tubes ready.

Just my .02 worth.
We may have a SRT coming in for an install over the next few days that has ARH Long tubes and a diablo. He said he expected more and has read about us. He had 4000 miles on his and is ready to move when we are. We'll keep you all posted if it does.

Thank you - yes - this is exactly what we are saying - If you build a kit with reliability in mind instead of break-neck HP/Trq you can achieve an safe stage 1 kit and have hundreds of kits running 500-600WHP safely. Can things break? Yes - are we doing our best to ensure they don't? YES... Point is anyone can pump too much boost and gain a ton an power and break stuff... We're maximizing a little boost and enjoying the + 150whp greatly. We're constantly scrutinizing the calibration to make sure its the best it can be, and the few pre-production guys have all been brought up to speed regarding testing. Their expectations have been set, not to mention we own and daily drive our own 2014. It brings children to school and goes shopping on the weekends...Will it go racing occasionally, yes... DO WE BEAT THE SHIT out of it every night? NO - Do we stretch its legs every once in a while YES... Do we have a few kills under its wings? Yes...

So in summation - RIPP has an excellent reputation for keep SC'd Jeeps running soundly for 100000's mile.Much weaker engines than the 6.4 and much weaker transmissions... Do a Google search for RIPP for yourself. We try to set the bar for kits, not follow the crowd and that's just what we plan on doing with this community.

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  #39  
Old 05-19-2014, 08:45 PM
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Re: Bit by the supercharger bug

Quote:
Originally Posted by Chunderboy View Post
Maybe a noob type question, but here goes.. So you say the transmission is rated for 700 bhp, but what about torque ratings?

Also, if the rig only has about 400 bhp stock, why rate it that much higher if they don't sell you bolt ons from the factory that can push it that much higher? Warranty?
Literally to accommodate the aftermarket.... besides, what good is building something to run at its limit all the time. You would over-engineer it and run safely within its limits.

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  #40  
Old 05-20-2014, 08:18 AM
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I thought the crank in these 6.4s was the only forged internal.
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  #41  
Old 05-20-2014, 01:53 PM
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Re: Bit by the supercharger bug

Quote:
Originally Posted by RIPP Superchargers View Post
We don't disagree, anyone beating the crap out of their own vehicle over and over will eventually break something... But we are trying to keep things as transparent and safe at the same time.

At 5psi non of what you're saying is going to happen -
  1. piston pressure is low
  2. We're leaving HP/trq on the table to gain reliability
  3. we're not pushing that much timing or aggressively
  4. We monitor all factory safety parameters and work actively with our tune to assure engine reliability
  5. Compressor sizing is perfectly matched to the engines capacity therefore power pours on progressively as apposed to positive displacement blowers which pour on power like a ton of bricks. Subsequently that type of blower is pron to breaking drive-train and rotating assemblies as you mentioned.



We may have a SRT coming in for an install over the next few days that has ARH Long tubes and a diablo. He said he expected more and has read about us. He had 4000 miles on his and is ready to move when we are. We'll keep you all posted if it does.

Thank you - yes - this is exactly what we are saying - If you build a kit with reliability in mind instead of break-neck HP/Trq you can achieve an safe stage 1 kit and have hundreds of kits running 500-600WHP safely. Can things break? Yes - are we doing our best to ensure they don't? YES... Point is anyone can pump too much boost and gain a ton an power and break stuff... We're maximizing a little boost and enjoying the + 150whp greatly. We're constantly scrutinizing the calibration to make sure its the best it can be, and the few pre-production guys have all been brought up to speed regarding testing. Their expectations have been set, not to mention we own and daily drive our own 2014. It brings children to school and goes shopping on the weekends...Will it go racing occasionally, yes... DO WE BEAT THE SHIT out of it every night? NO - Do we stretch its legs every once in a while YES... Do we have a few kills under its wings? Yes...

So in summation - RIPP has an excellent reputation for keep SC'd Jeeps running soundly for 100000's mile.Much weaker engines than the 6.4 and much weaker transmissions... Do a Google search for RIPP for yourself. We try to set the bar for kits, not follow the crowd and that's just what we plan on doing with this community.

RIPPTECH
Thanks for the info - sounds like you guys have done your homework and then some. If you are at 5 psi or lower reliability should stay in check.

Any higher and you will need to open the motor - forged steel crankshaft, forged alloy pistons, heat-treated aluminum-alloy cylinder heads etc. Also in that equation is cooling both tranny, engine etc. Heat extractors via the hood make a big difference and are a "cheap" mod.

I guess my point was the double edge sword vs. bang for the buck in a truck that pushes 2.5 tons. What does 5psi give me (off of the dyno) in terms of real world numbers, 0-60 and quarter mile?

That weight and the added HP of the SC still nets me only an honest 4.5 0-60??? I know folks are publishing high 3's for this truck via the internal gauge but that thing is off by a factor of ridiculous...

650 HP would get me to an honest 4 second run - which is a quick truck.
But then you have all of those left over grenade parts you leave in your wake at that point...

But it seems like you guys have found a nice middle ground.
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  #42  
Old 05-20-2014, 02:11 PM
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Re: Bit by the supercharger bug

My Jeep runs under 4 seconds with a 100 shot of nitrous. This would give me more than 100 shot so it should be under the 4 second mark too.


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  #43  
Old 05-20-2014, 03:25 PM
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Re: Bit by the supercharger bug

Quote:
Originally Posted by P-Dawger View Post
That weight and the added HP of the SC still nets me only an honest 4.5 0-60??? I know folks are publishing high 3's for this truck via the internal gauge but that thing is off by a factor of ridiculous...
I don't think the EVIC timers are off at all. In fact a bunch of people have gone to the track and it seems to be within .1 sec of the official track timing system. I think I remember the error being on the slower side too. You are ridiculous. With a RIPP supercharger these beasts will be easily running under 4 seconds like Tom said -- which is AWESOME!
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  #44  
Old 05-20-2014, 03:30 PM
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Re: Bit by the supercharger bug

Quote:
Originally Posted by 5.7summit View Post
I don't think the EVIC timers are off at all. In fact a bunch of people have gone to the track and it seems to be within .1 sec of the official track timing system. I think I remember the error being on the slower side too. You are ridiculous. With a RIPP supercharger these beasts will be easily running under 4 seconds like Tom said -- which is AWESOME!


Yes my EVIC is only off by .1 seconds when I take it to the track. And I am well under 4 seconds on my EVIC so even with .1 to .3 off I'm still under 4 with nitrous. So I expect the same or more from the Ripp Kit.


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  #45  
Old 05-20-2014, 03:43 PM
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Re: Bit by the supercharger bug

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Originally Posted by 14StormTrooper View Post
Yes my EVIC is only off by .1 seconds when I take it to the track. And I am well under 4 seconds on my EVIC so even with .1 to .3 off I'm still under 4 with nitrous. So I expect the same or more from the Ripp Kit.


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Man I can't wait to ride in yours when you get the RIPP kit installed. We should make a video of our 2 trucks in a 1/4 mile comparison so everybody can see what a difference it makes
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  #46  
Old 05-20-2014, 03:44 PM
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Re: Bit by the supercharger bug

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Originally Posted by 5.7summit View Post
Man I can't wait to ride in yours when you get the RIPP kit installed. We should make a video of our 2 trucks in a 1/4 mile comparison so everybody can see what a difference it makes

I agree man!!! Next time you run into me hopefully I'm in the jeep lol.


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  #47  
Old 05-20-2014, 04:33 PM
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Re: Bit by the supercharger bug

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Originally Posted by 14StormTrooper View Post
Yes my EVIC is only off by .1 seconds when I take it to the track. And I am well under 4 seconds on my EVIC so even with .1 to .3 off I'm still under 4 with nitrous. So I expect the same or more from the Ripp Kit.


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Yea - we wouldn't question the in-car logic - we ran 3.491sec with our smart phone which read 3.5sec with the EVIC - So we assumed it rounded up -

Besides - who cares - so long as everyone is using the same tool to time the vehicle, it will all be under the same system...

Right?

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