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02-07-2003, 07:00 PM
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CC Member
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Join Date: Feb 2001
Location: Colleyville, TX,
Posts: 191
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Ignition?
So, I am building a 408 Stroker less than 500 hp for the cobra. Which Igniotion? MSD 6AL, 7? The Digital? Weekend driver, some drag, ....
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02-08-2003, 04:05 AM
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CC Member
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Join Date: Nov 2000
Location: Houston,
Tx
Cobra Make, Engine: Unique FIA
Posts: 2,064
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Not Ranked
I have the MSD 6al. I love it. It is realiable as hell and has the rev limit feature. My freind uses the same box along with the MSD distributor on his 430HP 347 stroker. Works great, never misses a beat, easy to install, looks great, easy to mess with the curve springs.
I don't have much experiance with other units, so this eval is not a comparison. Just my 2 cents.... Hope this helps you.
Steven 
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02-08-2003, 07:43 AM
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CC Member
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Join Date: Mar 2000
Location: Fairfield, NJ, USA,
NJ
Cobra Make, Engine: A & C, 351W, Tremec 3550. Exiled Member: Club Cranky
Posts: 5,897
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Not Ranked
You may want to look at the MSD Digital 6plus. It has built in rev limiters and a 20 deg start retard. Have mine in over two years.
Roscoe
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Roscoe
"Crisis occurs when women and cattle get excited!"....James Thurber
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02-08-2003, 08:14 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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Ther reliability issues with MSD boxes only come into play on real race cars, where they have two in parallel and a switch to select which one, in times when one fails.. On a weekend driver it doesn't matter.
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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02-08-2003, 08:21 AM
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CC Member
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Join Date: Jun 1999
Location: Bay Area,
FL
Cobra Make, Engine: What Cobra?
Posts: 7,193
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How about the new MSD distributor that is totally self contained that uses NO ignition box. Just a coil...
TURK
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02-08-2003, 09:04 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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A capacitive discharge box is an ADDITION to any regular setup. Be it points, mag trigger, or what have you. The new MSD distributor is nothing new at all, it's just a mag triggered distributor with a pretty billet shaft, same as any factory unit from the 70's on, but new manufacture. The box is how you get a hotter spark.
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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08-08-2003, 03:48 AM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Not Ranked
Digital MSD
About to buy my MSD Distributor etc, the MSD guys recommend the Digital ignition, which has a better spark, and quicker thinking due to a microcontroller, which puts me off a bit as processors can fail or get overloaded. Still think the MSD-6AL is a good stable unit that gets the job done!
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A J. Newton
The 1960's rocked!
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08-08-2003, 07:55 AM
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CC Member
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Join Date: Mar 1999
Location: Pace, Florida, U.S.A.,
FL
Cobra Make, Engine: Hunter 427, 5.0 (302)
Posts: 966
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Not Ranked
Don't forget to look into the Mallory stuff. I am running a Mallory Unilight distributor, MSD Coil and the new Hyfire VI digital with built in rev limiter. The Unilight will run the car without a box and I ran it two years like that. I bought a factory rebuilt Hyfire unit from Mallory at the Gatornationals and it makes the engine idle with less unburnt fuel and rev better at high rpm.
A new Hyfire with rev limiter is about $170 which is the same as a analog MSD unit. The rev limiter is set with two switches and is adjustable in 250rpm increments from 3000 to 10000 rpm
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08-08-2003, 08:14 AM
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CC Member
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Join Date: Mar 2002
Location: so cal,
Cal
Cobra Make, Engine: I used to fix them for a living
Posts: 2,563
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I have had bad experiences with unilite's. Your milage may vary
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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08-08-2003, 09:26 AM
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CC Member
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
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Not Ranked
Turk,
I had the self contrained MSD Distributor in my small block and I loved it. Easy install and easy adjustments. MSD refers to it as their "READY TO RUN" unit. I never bought an ignition box, no problems. MSD either has a "READY TO RUN" unit available for the FE or will soon. Probably cost about $250.00 or less.
However, I am running the MSD FE distributor, MSD 6AL box, and their black vibration proof high output coil. I like them a lot.
Clois
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08-08-2003, 06:41 PM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Not Ranked
Ignition
aumoore, I am running Mallory fuel pump etc and I think they make good stuff, worth a look!
Something for me to consider is my engine is going to be max 10.1 comp, will be very efficient with good heads etc, but this is a 500bhp street and race engine!
Regarding MSD-6AL and Blaster 2 coil, I could leave my injected LS7 Chev 650+bhp race engine idling until warm with the coldest plugs available, go out and it never missed a beat.
Roscoe, The MSD guys recommend digital 6 plus, same as yours, with the new 8253 Blaster HVC II coil with 44000 of this and that.
SO do I need the hottest biggest spark around, as with an engine running pump gas on road, if you run big spark does this vastly reduce plug life as in wear and not really gain much horsepower over the 6AL unit?
 
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A J. Newton
The 1960's rocked!
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08-08-2003, 07:32 PM
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CC Member
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Join Date: Jan 2002
Location: Northridge,
CA
Cobra Make, Engine: Arntz Cobra
Posts: 1,838
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I'm with Mr. Fixit. Mallory stuff has left me sitting in the cold before. MSD has excellent quality control. Never a problem.
Paul
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"It doesn't have anything on it that doesn't make it go faster."
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08-08-2003, 09:45 PM
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CC Member
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Join Date: May 2003
Location: Green Cove Springs, Florida,
Posts: 47
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Clois - is the new coil you are using oil filled or epoxy. Have heard of the Blaster 2 coils failing when mounted horizontal, account oil moving away from internals.
Someone said MSD has a new coil that can be mounted horizontally with no problem.
Thanks,
Lynn
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08-09-2003, 01:33 AM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Ignition
Lynn, I assume the coil(s) you are referring to would be the Blaster vibration coil and any of the 8252, 8253 HVC coils, as these are filled with epoxy!
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A J. Newton
The 1960's rocked!
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08-09-2003, 08:16 AM
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CC Member
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Join Date: Mar 1999
Location: Pace, Florida, U.S.A.,
FL
Cobra Make, Engine: Hunter 427, 5.0 (302)
Posts: 966
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Not Ranked
If you check out the MSD stuff you will find a few failures especially the MSD ignition boxes.
From what I have been told by people that run Mallory Unilights you have to be extra careful when welding or jumping off a Unilight equiped engine. Always disconnect the ignition before welding on the car or charging the car. Never jump start a car with a Mallory Ignition. Charge the battery with the cables disconnected. The LEd in a Unilight is very sensitive to power spikes.
Many Unilights are damaged by hooking up wrong or by not using a ballast resistor. If you run a Hyfire box you do not need the ballast resistor.
I have seen many MSD failures and I would not recommend jump starting any modern electronic ignition cars.
I have ran my Mallory Unilight for over two years and many of the miles are under road race conditions. Drove the car from Pensacola to Ocala, Florida in 5 hours and back the next day. Never a hickup.
Take care of it and it will give good service. Maybe MSD has less failures because there is less of them on the road? Mallory has been around a long time and they make OEM ignitions for Boat manufactures.
Don't get me wrong MSD makes good stuff but they are not the only option out there.
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08-09-2003, 08:30 AM
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CC Member
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Join Date: Mar 1999
Location: Pace, Florida, U.S.A.,
FL
Cobra Make, Engine: Hunter 427, 5.0 (302)
Posts: 966
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Not Ranked
pretty good discussion about ignitions over at a chevy board
http://www.nastyz28.com/ubb/Archives...-8-000979.html
check out CenturyPerfCEO's posts about mallory |
08-09-2003, 05:39 PM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Not Ranked
Roscoe,
Thinking seriously about the digital 6 as the 6AL has been around for a long time, and if MSD claim its the way to go!
I see in an old post you went for a dual pickup distributor, do you run two separate ignition systems or is that just to have a backup pickup?
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A J. Newton
The 1960's rocked!
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