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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: 66cnet500]
#1448628
06/07/13 01:55 PM
06/07/13 01:55 PM
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Joined: Jan 2003
Posts: 395
Knoxville, TN, USA
mantonas
OP
enthusiast
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OP
enthusiast
Joined: Jan 2003
Posts: 395
Knoxville, TN, USA
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Mopar Action did a series less than a year ago where they retrofitted a rear-wheel ABS system using about $60 worth of junkyard parts onto a classic mopar. I think this would be right up their alley (hint, hint).
69 Chrysler 300 Convertible
77 Chrysler New Yorker Brougham 2-dr
03 Jeep Grand Cherokee Limited
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: mantonas]
#1448629
06/07/13 02:00 PM
06/07/13 02:00 PM
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Joined: Jan 2003
Posts: 395
Knoxville, TN, USA
mantonas
OP
enthusiast
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OP
enthusiast
Joined: Jan 2003
Posts: 395
Knoxville, TN, USA
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From my recent experience in the Jeep world, I've learned that a lot of people are doing this kind of thing with Wranglers, which never came from the factory with a V8 engine. Unfortunately, the standard retrofit involves a late model Chevy V8. Wouldn't it be great to nail down all the details of a low-buck junkyard 5.2 or 5.9 EFI drivetrain swap instead so there are more mopar-powered vehicles on the road?
69 Chrysler 300 Convertible
77 Chrysler New Yorker Brougham 2-dr
03 Jeep Grand Cherokee Limited
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: Jjs72D]
#1448631
06/07/13 04:06 PM
06/07/13 04:06 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Quote:
Well, EVERYone has an opinion...
OBD-II JTEC has been cracked. it's called SCT.
I'm running a very choppy cam that idles with about 9.5" of vacuum in my 360. it also has a single plane intake, a larger throttle body, and headers. Dropped it into a 98 Dakota that was originally a 5.2 5-spd truck. Currently it's making 285 RWHP and 325 RWTQ...or, over 100 Hp more than a bone stock 360 (which only make 250 crank hp and 345 crank torque)
Computer is "flashed" with SCT to advance the timing curve, and to deliver more fuel as needed, took me about as long as it takes to tune the jets on a holley carb (go bigger, run it, go bigger, run it, go bigger, run it, find out you went too big and go back, etc.)
not sure what's so hard to "crack" with the JTEC computer? 
**Photobucket sucks**
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: MO_PA]
#1448633
06/07/13 11:46 PM
06/07/13 11:46 PM
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Joined: Jan 2003
Posts: 18,425
UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,425
UPPER MICHIGAN, MARQUETTE COUN...
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Quote:
Quote:
your worst hurdle is your fuel tank and pump.
why would this be difficult?
I mounted a pump on the frame near the spring hanger. No big deal!
Where did I say difficult?? It only involves thought and innovation to have an in tank set up with the proper supply and return if needed. Anyone can hack an external pump on.
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: NITROUSN]
#1448634
06/08/13 09:29 AM
06/08/13 09:29 AM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
Quote:
Quote:
your worst hurdle is your fuel tank and pump.
why would this be difficult?
I mounted a pump on the frame near the spring hanger. No big deal!
Where did I say difficult?? It only involves thought and innovation to have an in tank set up with the proper supply and return if needed. Anyone can hack an external pump on.
A lot of people thought the way to get a good solid fuel flow even when the fuel level is down was to hack a hole in their fuel tank and slip a pump in there with a few remedial baffles.
They are finding, they are still getting fuel cavitation issues below a half a tank when driving the car hard in the corners etc. In tank fuel pumps work ok in custom tanks, but they are not the best or most cost efficient solution in all cases.
Surge tank systems combined with a well designed baffled tank are the ultimate fuel systems for high G performance even with low fuel levels.
I'm using a stock tank with an externally mounted low pressure pump to push the fuel up to a surge tank at the front of the car via a full return flow system. The high pressure pump is inside the surge tank and is a full return flow system to capped with a pressure regulator.
Even without any baffles in my stock tank, I can run the car hard on a road course with the fuel level below an 1/8 of a tank and still have a good solid fuel supply with no cavitation.
With a few exceptions for some well though out, high dollar custom tank set-ups that I've seen in some Tuner's cars and in real race cars, most "custom" tanks have a few folded sheets of metal ineffectively mounted in them that are then referred to as baffles, but they just don't work that well. They still have cavitation issues below a half a tank of fuel and are generally more expensive to put together.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: roadrunninMark]
#1448636
06/08/13 10:19 AM
06/08/13 10:19 AM
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Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan
I Live Here
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I Live Here
Joined: Jun 2008
Posts: 10,847
Oakdale CT
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Quote:
If you use a 5.9 magnum, do you need to swap out the oil pan for the LA360 pan(for 70-74 e body)? I though I read that somewhere....
Yes, been there and done it on my Duster.
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: Andrewh]
#1448638
06/08/13 12:50 PM
06/08/13 12:50 PM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
jbc426- I wonder how your fuel temp is? do you do a lot of sitting with the engine idling? parades?
most engineers would not recommend your return go to the smaller tank due to heat issues building up in the fuel.
I understand what your saying Andrewh, but this dual circulation system eliminates the heat buildup from a high pressure pump submerged in a small volume of fuel, because both sides of the fuel system go to the small tank, so the small tank's fuel is constantly being flushed by the high-volume, low-pressure side of the fuel system.
The volume of fuel that flows through the surge tank from just the low pressure side is huge. Even at near 0 psi, it's nearly the entire full-flow rating of the low side fuel pump. The fuel flows from the tank, through a filter, through the low pressure pump, through the 3/8ths line to the front of the car, through another fuel filter, through the surge tank and then back through a 3/8ths line to the tank at the rear of the car.
This set-up also allows for full circulation of the cooled fuel through the fuel rails, so the injectors are shooting in cooler fuel too. Once the returning fuel is dumped back into the surge tank by the return regulator, the warmed fuel is circulated back to the rear of the car by the high volume, low pressure circulation of cool fuel.
Even on the hottest days, the surge tank is cool to the touch.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: NITROUSN]
#1448640
06/08/13 02:02 PM
06/08/13 02:02 PM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
So who makes this surge tank? What pumps are you running?
The best overall design I've found is from Radium Engineering. The pumps can be scaled up or down depending on your fuel need. I'm running a small DW200, which is for less than 400 hp. There is room in the surge tank for 2 large pumps that can support over 1300 hp.
For the low pressure side, I'm just running an inexpensive, small, quiet pump.
Down the road when I increase my horsepower, I'll have to upsize the low pressure pump and add another DW200.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Put late 90s fuel-injected 5.2 or 5.9 in classic mopar?
[Re: jbc426]
#1448643
06/08/13 02:15 PM
06/08/13 02:15 PM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Mounted near the fuel tank...
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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