Guzzi ignition distributor differences?

[JonnyCash]

I just watched a guy get an awful lot of money on ebay for a guzzi T3 distributor. He distinguished it by saying it was an "A code" distributor, and pictured the code stamped on the body of the distributor. I hadn't heard of different variations. I went and checked my stash, and it turns out that I have two "B"code distributors, and one "A". Do they have a different advance curve? Is one more desirable than the other? Thanks for any input.

[F_Sahms]

Originally Posted by JonnyCash

I just watched a guy get an awful lot of money on ebay for a guzzi T3 distributor. He distinguished it by saying it was an "A code" distributor, and pictured the code stamped on the body of the distributor. I hadn't heard of different variations. I went and checked my stash, and it turns out that I have two "B"code distributors, and one "A". Do they have a different advance curve? Is one more desirable than the other? Thanks for any input.

The Le Mans and 850T bikes have a different advance curve. Per Guzziology, it's all in the advance springs, which are cheap.

[JonnyCash]

Thanks. Funny that the whole distributor would get a different number when only the springs are different.

[F_Sahms]

Originally Posted by JonnyCash

Thanks. Funny that the whole distributor would get a different number when only the springs are different.

The part numbers on the springs are too small to read..

[England-Kev]

Originally Posted by F_Sahms

The part numbers on the springs are too small to read..

[Nessman]

What Fred said...
The 850T had lighter springs to make the engine hit full advance sooner. Dave Richardson (Guzziology) and local legend Bob Nolan (RIP Bob ) took both types apart and measured everything as only those two could. At the end of the exercise the springs were the only difference.

My EV1100 motor is going to have an 850T dizzy if I ever get around to putting it together.