i was thinking about getting an ignition box. the two that i was looking at are the 6al and the digital 6. is there a big difference in the digital 6 compared to an analog?

 

get the digi 6 box...you'll be glad you did

 

What are the practical advantages of the Digital over the old school? Pardon
my ignorance....

 

I changed from a crane hi-6s to a digi. 6+ and love it. Has more "features".
Never used any other MSD boxes, so someone else will have to chime in.

 

Digital 6+ has an adjustable 2-step rev limiter included. 6AL requires add-on module & pills.

 

What kind of dollar difference are we talking about?

 

installed 6al into friends c4 worked well only bad thing is it hums (installed into glove box)

 

Check it out yourself on www.summitracing.com .

 

ill be a bit more specific...

6al MSD-6420 $229.88
-CD Voltage Output to Coil: 460-480 V
-Spark Output (millijoules): 115 Millijoules
-Timing Retard: None

digital 6 MSD-6520 $309.88
-CD Voltage Output to Coil: 535 V
-Spark Output (millijoules): 135 Millijoules
-Timing Retard: One-stage

are the differences in these two significant? right now my car is running slightly rich, and i was looking for a way to improve the ignition a bit at lower rpm, but later on i dont want to regret buying the cheaper one because it is "so much better" but i dont want to just throw money at summit. (not like i havent already )
thanks again
| || |

 

If your car is mostly stock there are more effective things you could spend your money on first.

 

Yeah mine is installed on the right side of the console...and my does buzz also..sometimes loud and sometimes doesnt buzz at all..I called MSD and asked if that was normal and they told me yes..those are the transistors in the box....

this is the best picture I got...I forgot to take one after the complete install...but you cant see any of the wires at all...I installed it there so I had easy access to adjust the rev limit or timing retard for the the nitrous...works damn good..and dont let any tell you its gets hot..cause it doesnt...it get warm...and is far enough away from anyones leg...

on the other side of the console is my MSD digi window switch...again for easy access..whats cool about the digital window switch is its also a digital Tach..which is pretty cool...and that should be dead on cause its running directly from the distributor...so I got my dash tach and digital tach..

 

did you see any noticable difference once it was installed? besides the timing retard, was it something needed?

 

my car isnt really stock, i get so tired of typing the mods....need to get the sig working....pic attached

 

What type of ignition are you running now? If your using a non HEI dizzy then I would recommend it, hell, w/ dual 4 barrels and a tunnel ram I'd still bet there would be an improvement.

 

atm im running an accel dist and coil nothing real special, i will get a box for it but im just not sure which one to order this weekend.

 

If you don't need the 2-step rev limiter or timing retard, the 6AL or Crane HI-6 will be fine. Both have a built-in rev limiter.

If you want the 2-step capability, the Digitial 6 is a good part.

 

If you like to bracket race, the 2 step is a great idea. It's helped me out a lot being a manual guy.

 

so the cd output voltage difference doesnt really matter? except for the 2 step i wont see any other performance gains from it that i would notice?

 

ttt

 

I was looking at Crane HI-6 not the digital one!
It had revv limiter and timing retard.
I am not sure what stage 2 would do or does for that matter.

The crane HI-6 is 170 bucks at summit.
And check this out.


HI-6 Performance CD Ignition

• Capacitive-Discharge ignition for street

• New HI-6 delivers higher spark-gap current than comparable digital CD ignitions!

• Multi-Spark CD, for race, street, nitrous-oxide, supercharged and turbo

• More HP, torque, crisper throttle response!

• For vehicles with distributor

• New “Plug-n-Go” universal harness included

• New, bigger rotary switches with precise “Click-In” detents for easy rev limit adjustments. No “chips” needed

• Built-in adjustable rev limiter adjusts in 100 RPM increments

• NEW! Easy Checking for System Problems! No guessing!

• Built-in flashing codes tell what the problem is. Checks coil, ground, power supply, loose or broken wires and the ignition unit itself!

• Points, module, mag triggered

• Tach accuracy check feature built in

• Surface-mount, fully digital components

• The most reliable CD ignition available

• Built-in timing retard available with optional Control Module, Part Number 6000-6446

• Fully sealed with new, soft urethane for heat, dirt and moisture protection

• Exclusive Cross-Fire protection, for supercharged or turbo applications

CRANE VS. MSD
CRANE

Crane Cams' ignition has a fully digital design (A Crane 1st since 1995!) For accuracy and absolute reliability! Robotic, surface-mount assembly, same as used in cellular telephones.

MSD

MSD's ignition has low-tech, analog design with hand-soldered, “spaghetti” wires that can break away and cause ignition failure!