Re: Hellcat supercharger on a 6.4 or 5.7
[Re: Dart 500]
#3193345
11/26/23 06:55 AM
11/26/23 06:55 AM
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Joined: Nov 2008
Posts: 5,982 Greenville, PA
redraptor
master
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master
Joined: Nov 2008
Posts: 5,982
Greenville, PA
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You can but they de-stroked the 6.4 to 6.2 (same block/bore) for a reason. Yea, to make a more robust crankshaft. And no where in that article did it mention changing out those hypereutectic pistons.
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Re: Hellcat supercharger on a 6.4 or 5.7
[Re: redraptor]
#3193538
11/27/23 02:10 AM
11/27/23 02:10 AM
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Joined: Feb 2022
Posts: 1,335 Nor here, Nor there
Dart 500
pro stock
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pro stock
Joined: Feb 2022
Posts: 1,335
Nor here, Nor there
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You can but they de-stroked the 6.4 to 6.2 (same block/bore) for a reason. Yea, to make a more robust crankshaft. And no where in that article did it mention changing out those hypereutectic pistons. In the 6.4? The pistons are weak because the ring is so high to meet emissions that they cant take any boost. You're on borrowed time at even 6psi. Hellcat pistons are forged and made by Mahle. Again, its de stroked for a reason. OE engines have to meet a crazy level of abuse - hot lapping in death valley, cold starts and WOT in the arctic. Not changing the oil, using the wrong antifreeze etc
Last edited by Dart 500; 11/27/23 02:12 AM.
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Re: Hellcat supercharger on a 6.4 or 5.7
[Re: Dart 500]
#3195574
12/05/23 09:52 PM
12/05/23 09:52 PM
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Joined: Jul 2006
Posts: 164 Pahrump NV.
Doright
member
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member
Joined: Jul 2006
Posts: 164
Pahrump NV.
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I live on the edge of Death valley I see All the MFG cars come through at the end of summer they all do it at the end of the HOT season for a reason. To pass the Test. Its all BS
Any engine super charged OR Turbo charged should have Forged pistons PERIOD.
D Barnett A&P mechanic, FCC general radio Telephone operator.
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Re: Hellcat supercharger on a 6.4 or 5.7
[Re: Dart 500]
#3195576
12/05/23 09:56 PM
12/05/23 09:56 PM
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Joined: Jul 2006
Posts: 164 Pahrump NV.
Doright
member
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member
Joined: Jul 2006
Posts: 164
Pahrump NV.
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The pistons are weak because the ring is so high to meet emissions that they cant take any boost. They do not move the rings Hi on the pistons for emissions......
D Barnett A&P mechanic, FCC general radio Telephone operator.
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Re: Hellcat supercharger on a 6.4 or 5.7
[Re: Doright]
#3195632
12/06/23 10:37 AM
12/06/23 10:37 AM
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Joined: Dec 2021
Posts: 1,319 Loudoun County, VA
Brad_Haak
pro stock
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pro stock
Joined: Dec 2021
Posts: 1,319
Loudoun County, VA
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The pistons are weak because the ring is so high to meet emissions that they cant take any boost. They do not move the rings Hi on the pistons for emissions...... The high ring placement has two (2) benefits: - reduced emissions due to less crevice area above the ring to capture unburned air/fuel mixture - improved torque due to better combustion efficiency For OEMs, it's the first reason that drives this trend: https://www.enginebuildermag.com/2005/01/piston-ring-technology-stock-and-performance/
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Hellcat supercharger on a 6.4 or 5.7
[Re: RTSrunner]
#3202525
01/05/24 04:30 PM
01/05/24 04:30 PM
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Joined: Jan 2004
Posts: 3,840 Central Missouri Fort Leonard...
mopar65
master
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master
Joined: Jan 2004
Posts: 3,840
Central Missouri Fort Leonard...
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A member on my chrysler 300 Fourm did it to his SRT8 300
3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727
10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come...
( SGT Miller) Proudly served 12 years in the US ARMY RESERVES
support our troops
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