This shows the install info of the Boyer Bransden 'KIT00083' Ignition kit for "Suzuki GT Series triples".
This page is provided for other GT750 owners who consider installing this type of breakerless ignition. The purpose of the kit is that you replace the normal mechanic contact breakers and condensors with a magnetic rotor and a plate with inductive sensors meaning there is no longer any contact breaker parts or condensors that wear and that ignition timing settings will remain constant, requiring no further maintenance/adjustment.
Click on images for detail view
|
|
|
| The box and product label | Kawasaki 250 install info (Front page) | Suzuki specific install info (back page) |
 |
 |
| Kit contents | Rotor with 120 degree spaced magnets |
Although the kit is supposed to be for the GT series according to the outside of the box, once opened it turns
out the kit is based on one for the Kawasaki 'KH250'. The kit contains a rotor unit with three magnets at 120 degree
spacings and a circular printed circuit board plate on which the magnetic sensor coils are mounted. The circuit
board does not fit directly in the ignition housing of the GT engines, and does not readily fit on the GT750 timing
plate. Also there is no ready-to-plug-in wiring harness but it's up to you to make it look professional.
First you need to remove all of the components on the original timing plate, then there are two alternatives (I
have tried none of them yet): either to machine the timing plate flat (a machine shop job, means you can no longer
use the mechanical breaker components) or possibly mount it with the back side outwards (have not tried that yet),
then drill new mounting holes on it to fit the circular circuit board.
What may advocate against this type of system is that there is no way to set the timing individually per cylinder.
The crank parts are assumed to be perfectly aligned at 120 degree spacings and some say there can be imperfectnesses
in the crank assembly which makes for deviations that would require individual timing possibilities.
The installation instruction sheet of paper contains details on the back side of specific details for using it
on the GT series! One interesting instruction is this one:
"3) Clean off the contact breaker plate or make a new one to hold
the KH250 trigger plate in place around the rotor."
So much for a GT series kit ! Also the system works a bit unexpected. Although there is three sensors, the system
is designed so that all three coils fire simultaneously at each 120 degree angle, means each coil discharge two
times more than before
I got the kit from 'Pro-Flo' in the U.S, $149.95 article no 'BB083'
(C)2000 Gunnar Forsgren, Allr Rights Reserved