[Fot] MSD box

[gt6steve at aol.com]

I've seen that exact issue on a very fast TR4.  Drove us nuts until we tried a new box.  They will repair it very cheaply as I recall.


Remember how NASCAR's always have TWO on board??



 
 





-----Original Message-----
From: don--- via Fot <fot at autox.team.net>
To: fot <fot at autox.team.net>
Sent: Mon, Apr 6, 2015 4:55 pm
Subject: [Fot] MSD box


 
This Spitfire that was “pawned” off on me has a MSD Digital 6A box in it. 
 
  
 
 
When I pull either #1 or #4 plug wire she runs fine, dips down a bit in RPM, but if I pull #2 or #3 she almost dies. 
 
  
 
 
I put my timing gun on #1 wire, she fires at 15  °BTDC and same if I put the timing gun sensor 
 
on the #4 wire. 
 
  
 
 
When I put the sensor on either #2 or #3 wire, it shows it firing all over the place, them seem to settle down to 15°btdc 
 
and then goes crazy again, settles down.  
 
  
 
 
Not sure if this is the MSD box or not but I thought I might get some answers here. 
 
  
 
 
I did find that the rotor cap was dragging on the Pertronix Ignitor module inside the distributor. I swapped out rotor caps but still no luck. 
 
  
 
 
Don 
 
  
 
 
   
DON COUCH PHOTOGRAPHY  
  
(512)-680-3540  
  
  


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