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Re: MSD/Mallory boxes really necessary?
[Re: babarracuda]
#74382
06/16/08 09:05 AM
06/16/08 09:05 AM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
OP
master
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OP
master
Joined: Jan 2003
Posts: 4,084
Indiana
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Quote:
The Malory Unilite works good with CDI boxes. The advantage of multi spark ignitions is easier starting and how they run when the motor is cold. I have noticed improved part throttle response. As far as performance is concerned, my friend ran a Mopar ignition for years racing a 11:1 340 motor and it ran great.
On my street car, I only run CDI (Crane HI-6 or Mallory. Many prefer MSD, but I have not had great luck with the MSD 6. Just my preference.
I was looking at the 32 series in hyfire 6-AL. Just want to be sure that it was something worth the extra $. I wasn't sure that the unilite worked with the hyfire box if I chose to buy it later. I think if you buy the 32 series distributor you MUST run the box.
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74384
06/16/08 09:53 AM
06/16/08 09:53 AM
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Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Re: MSD/Mallory boxes really necessary?
[Re: DaytonaTurbo]
#74387
06/16/08 11:26 AM
06/16/08 11:26 AM
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Joined: Feb 2003
Posts: 515
Dayton, Ohio
65cuda
mopar addict
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mopar addict
Joined: Feb 2003
Posts: 515
Dayton, Ohio
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I like the chrome box and adj. dist. you can put in any curve you want. i have read many times in Mopar Muscle that the stock Mopar setups were all we needed.
65 Cuda 360,3.23 SG-13.97 @99.4, 88 D100, 2000 Kota Qcab, 71 Duster 416 11.84 @110., 73 Imp ,(2)72 & (1)71 Dart Swingers
GarysMocars Legendary Dealer
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Re: MSD/Mallory boxes really necessary?
[Re: 65cuda]
#74388
06/16/08 11:31 AM
06/16/08 11:31 AM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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Necesary ? no... depending what use you will have to the car. I'm very happy with Mopar Chromed box and stock dist, with MSD Blaster 2 coil ( same than MP coil )
I think MP stuff in this case works GREAT for the price
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74389
06/16/08 11:31 AM
06/16/08 11:31 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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The main advantage of the MSD is the multiple sparks at low RPM. When you start getting into big cams, big heads, carburated engines, the air/fuel mixture at idle and low rpms can vary alot and the multiple sparks reduces the chance of the cylinder not firing.
At higher RPM, the MSD boxes just provide a single spark (your limited by the cap and rotor design), but by then there is good intake velocity so the air/furl mixture will be more conistant.
The new OEM coil-on-plug design allows much longer spark duration with out the possability of flash over that you could get from the cap and rotor design, which brings up the issue of rotor phasing.... anyhow, thats another post.
Anyhow if you have a near stock engine or fuel injected engine there probbably won't be a big improvement with the MSD. If you have a modified carburated engine you could see some improvements, usually easier starting, more even idle, and better low rpm response.
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74390
06/16/08 02:30 PM
06/16/08 02:30 PM
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Joined: Jan 2005
Posts: 4,404
Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,404
Michigan
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I run one. Noticed a bit better idle quality and throttle response. Really, they allow a greater margin of error for those of us who can't tune very well, like myself. From what I gather, a properly setup stock ignition on a mild motor will perform just as well.
Where they really start to shine is with all the add-ons and goodies that was stated before, timing controllers, rev limiters, etc... The rev limiter in my 6AL saved butt once already...
1987 Fifth Avenue - 512/518/D60
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Re: MSD/Mallory boxes really necessary?
[Re: Neil]
#74392
06/16/08 08:11 PM
06/16/08 08:11 PM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
OP
master
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OP
master
Joined: Jan 2003
Posts: 4,084
Indiana
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thanks for all the input. I went ahead and bought the mallory and Hyfire 6AL since it has a bit more output than the msd setup.
'70 Duster - SDSS 436 W5 4spd (Gone)
'71 Dodge D100
'70 Dodge W100
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74393
06/16/08 09:13 PM
06/16/08 09:13 PM
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Joined: Apr 2007
Posts: 2,327
Glendale, AZ
69L78Nova
Banned. Forever.
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Banned. Forever.
Joined: Apr 2007
Posts: 2,327
Glendale, AZ
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I like my 6AL box. Nice to have a rev limiter with a stick car in case I break something while racing it or getting on it.
1969 Nova
454/M21/3.31
Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD
5.0/4R70W/3.55
(Daily driver)
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74395
06/16/08 09:25 PM
06/16/08 09:25 PM
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Joined: Oct 2004
Posts: 8,165
Left Coast
BobR
master
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master
Joined: Oct 2004
Posts: 8,165
Left Coast
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Quote:
Quote:
I like my 6AL box. Nice to have a rev limiter with a stick car in case I break something while racing it or getting on it.
That's one of the reasons I decided to go ahead and get it. never know when you're gonna miss that next gear. lol
You will need it sometime but in the mean time the confidence it gives you will make you a better driver. -Bob
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Re: MSD/Mallory boxes really necessary?
[Re: 451Mopar]
#74396
06/16/08 10:35 PM
06/16/08 10:35 PM
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Joined: Jan 2003
Posts: 3,488
Annapolis, MD, USA
Vert
master
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master
Joined: Jan 2003
Posts: 3,488
Annapolis, MD, USA
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Quote:
...
At higher RPM, the MSD boxes just provide a single spark (your limited by the cap and rotor design), but by then there is good intake velocity so the air/furl mixture will be more conistant.
...
Spot on information; the limiting factor is the duration of the sparks produced vs the time available to spark a cylinder given the rotational speed. Once you reach a certain RPM its time to fire the next cylinder before you could spark a cylinder a second time. A better cap and rotor design might help, but unless you make shorter duration sparks, you can't fit more into a given amount of time.
I used a Crane CD unit 30 years ago and had a noticeble difference on my 71 Charger. I'll probably buy a Crane unit again soon as I like the built in rev limiter. BTW, a recent issue of the Summit catalog had a great comparison of specs on MSD,Crane, Mallory, Accel, & Summit units. Unfortunately I can't find it in my current catalog.
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Re: MSD/Mallory boxes really necessary?
[Re: DaytonaTurbo]
#74397
06/16/08 10:52 PM
06/16/08 10:52 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Necessary? No of course not. Do they help? Some swear by them, others say they do nothing.
i'm a firm believer in that they do nothing. one good spark at the RIGHT TIME is all a engine needs.
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Re: MSD/Mallory boxes really necessary?
[Re: W5Duster436]
#74398
06/18/08 09:27 PM
06/18/08 09:27 PM
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Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
DusterKrazy
master
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master
Joined: Mar 2005
Posts: 3,445
N.Wilkesboro,NC
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Quote:
thanks for all the input. I went ahead and bought the mallory and Hyfire 6AL since it has a bit more output than the msd setup.
You should love it  I have a mallory hyfire box on my duster drag car and couldnt be happier with it. It went from points (which suck and I wouldnt run them on anything) to the mopar electronic ignition setup which isnt bad to the mallory hyfire box. It made a dramatic difference in how the car started,idled,and noticeably better throttle throttle response. Im not saying it works miracles but Im pleased. It also is lower priced than the msd and takes less current draw to run,no rev chips to worry about,and if you want to place it on a /6 like I did you can reuse it later on a v8 car unlike an msd which if you set it up for a 6 cylinder to bad you'll have to keep putting it on a 6 or whatever it's setup for. Mallory is a better buy IMO, I had an msd and had problems with it but maybe I just got a bad one?
Yes some of us here do modify /6's 
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