Locking a dizzy

Loz · backyard mechanic Joined: 05 Oct 2001 Posts: 943

What is the best way to lock a gemi dizzy?
One fella told me to tie wire to the plate etc and hold it tht way, but that sounds a bit dodgy to me. What have others done, ans is it reliable??

Cheers
Loz

GasGem · backyard mechanic Joined: 05 Nov 2001 Posts: 755

weld the 2 plates together

Gold TX Sleeper · backyard mechanic Joined: 05 Feb 2002 Posts: 509

What benefit does the mod have on your performance? And what are the negatives? I've never had anyone explain 2 me why this mod is done.
Cheers,
Jasyn...

Soop · backyard mechanic Joined: 30 May 2002 Posts: 748

I believe you do it in order to run computer controlled ignition.

So all the dizzy has to do is fire and the computer tells it when and how to fire.

I could be wrong though.

Mark · tinkerer Joined: 04 Oct 2001 Posts: 153

Undo the 2 screws that hold the plate down, pull out the vaccuum advance diaphragm, and pull out the top plate points and all. Take out the two springs that hold the flyweights to the rotating weight and then weld them closed. Then refit top plate. Simple as. I have done it many times.

You lock a dizzy up for "boosted" purposes. Most turbo cars have a vaccuum advance/boost retard diaphragm, or are controlled by the ecu. eg/ You want max 20degree total timing otherwise it pings on boost, if you retard the dizzy you will have 10atdc initial timing and it will start, idle and generally run like a dog off boost. A locked dizzy you can set at 20degree intial, 20degree total advance etc.

Loz · backyard mechanic Joined: 05 Oct 2001 Posts: 943

By this do you mean weld the flyweights to the rotating weight so that the centrifigal force cant force them out?

If so then its done! (tomorrow)

And for everyone else I am locking it for use with a computer.

Cheers
Loz