View Single Post
Jonny H Jonny H is offline
Registered
 
Jonny H's Avatar
 
Join Date: Jul 2013
Location: South East England
Posts: 1,710
Quote:
Originally Posted by troth View Post
Lorne,
I recently inquired at classic retrofit about this and this is the reply I got:



So it seems, no, the CDI+ cannot be programmed to output twice the energy and split to two separate coils in parallel. This was surprising to me. I know other vendors like ashlock can modify stock cdi boxes for twin plug by installing two sets of solid state electronics in a single box. I would think classic retrofit could do something similar. I’m sure their circuitry takes up more physical space, but it seems there would be a market for this. A programmable curve in a stock looking box to plug into a locked dizzy by JB racing or similar. They recommend using MSD, but I prefer the stock look of the Bosch cdi boxes.
The issue is heat dissipation, for high RPM in a high ambient conditions, a stock Bosch CDI will see a case temperature of over 80 deg C. You put twice the energy in that little box and I think you'd be into forced internal cooling with a fan.

Bob has clearly been playing with this. How are you managing the heat Bob?
__________________
www.classicretrofit.com
Old 03-03-2022, 02:00 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #49 (permalink)