MSD-7al-3 problems?

i still run the 7al2 i bought new back in the mid 90's and it works every time.

cool40 wrote:i still run the 7al2 i bought new back in the mid 90's and it works every time.

X2,and I have another for a backup,so mine should last forever

Let me be the first to say,,, MY BAD, the MSD 7al3 wasn't the problem. I had .035 end l play in my dist., and 3 plug wires with triple the OHM's reading. I will still keep my eye on the box because it a character you cannot leave home alone. We be drag racin again.

I've been struggling to get my 608 bbf alcohol motor to go past 5500 rpm...check alcohol system ...timing at 32-36....
Don't pop or bang...starts good...idles good...just no top end...I've checked bout everything ..
Msd replaced a start retard board n Saussure its good to go...
also tried different chips.
This is my first alcohol motor n am struggling.

Thanks for ur help
Jason

bbf drag I would start a new thread. My problem was not the MSD 7 box and it turned out to be the crank shaft was .0008 smaller than the timing gear which made my timing move around. I use the timing retard to start and goto 30' after it starts. When I get to 3000rpm the timing moves back to 29' and I am living with that.

bbfdragster wrote:I've been struggling to get my 608 bbf alcohol motor to go past 5500 rpm...check alcohol system ...timing at 32-36....
Don't pop or bang...starts good...idles good...just no top end...I've checked bout everything ..
Msd replaced a start retard board n Saussure its good to go...
also tried different chips.
This is my first alcohol motor n am struggling.

Thanks for ur help
Jason

sounds fat fat fat........ what pump, nozzel etc? seems we've discussed it before.

Possible...been on this problem for couple years...n this year I had to redo wife's kitchen.
80-a1...7.5 gal....40 nozzle ....30% leak down on barrel valve...
n yes plugs r wet When I get back...
Boutght high speed bypass but haven't installed yet...
almost ready to go back to carbs.
Thanks for ur help guys.
Jason

bbfdragster wrote:Possible...been on this problem for couple years...n this year I had to redo wife's kitchen.
80-a1...7.5 gal....40 nozzle ....30% leak down on barrel valve...
n yes plugs r wet When I get back...
Boutght high speed bypass but haven't installed yet...
almost ready to go back to carbs.
Thanks for ur help guys.
Jason

nozzles are big,IMO.what main pill? whats the oil look like? if its fat it'll milk the oil.go here... http://fuelinjectionenterprises.com/ and do the user name etc etc,it's a free site,and check out the tuneup calculator.i've used it and its very close as long as the info you put in is right.my 526 likes less timing,28-30*,just a thought.

I have a 7al-2 msd box on my car and it has been a great box no problems.

Update. Friends and I now have five MSD 7AL3 boxes working flawlessly. It's not a POS, but does require a couple of different setup details. You can't just plug one in place of a different box and run. We love ours.

I have 3 of these boxes and have never had a problem. Maybe all 3 are broken and I don't know it.  


Ace

The new version of the 7AL3 is a bit more user friendly...especially in the start retard function.

maverick wrote:The new version of the 7AL3 is a bit more user friendly...especially in the start retard function.

and i just found this out which it has a starter retard plug in for the chips. Instead of a fixed starter retard of 20 degress. I have a hell of a time starting my junk. some days are better than others.

powerstrokeace wrote:

maverick wrote:The new version of the 7AL3 is a bit more user friendly...especially in the start retard function.

and i just found this out which it has a starter retard plug in for the chips. Instead of a fixed starter retard of 20 degress. I have a hell of a time starting my junk. some days are better than others.

We have our stuff cranking like Grandpa's Buick. If you have the old style 7al3 and a crank trigger, rotor phase needs to be changed a bit.

No crank trigger here


Ace