Distributor Identification For 100Kw Smallport

[Brooklandsbob]

I'm trying to identify the distributor in my 100kw motor. The serial number sticker is long gone. pics hopefully attatched. Does anyone have the part number for the 100kw motor???.

 

The pic of the one with the rotor arm is - I believe to be out of a redtop bigport. Can I use this sucessfully in the Smallport motor

 

Many thanks

 

Bob

[ke70dave]

the main diference is that the smallport has 3 pickups/triggers in it, a 24tooth wheel with 1 trigger, and then 2 pickups on a 2tooth wheel.(4 wires, square style plug). the top photo is one of these

 

bigport only has 2 pickups, a 24tooth wheel with 1 pickup (back of dizzy), and a 4 tooth with 1 pickup (front, closest to rotor button) (3 wires, round plug)

 

not interchangeable as far as i know.

 

you may be able to use a smallport dizzy in a bigport and just disregard a pickup. but it would require some thinking to work out which trigger does what. and some rewiring. but you wont be able to use the bigport dizzy in the smallport as it will be missing a pickup.

[parrot]

Part number is 19100-16250 and it has 4-AGE noted on the label.

[Brooklandsbob]

Top stuff thanks fellas

[350dream]

also smallports have a roll pin that holds the gear on the shaft that the cam gear drives on

 

and bigports are press on

 

i think.

[Trev]

also smallports have a roll pin that holds the gear on the shaft that the cam gear drives on

 

and bigports are press on

 

i think.

 

Other way around.