Pertronix Billet Dizzy for T1 - a word of caution and warning !!

[Shane Noone]

Guys, just wanted to share my experiences with you and anyone either running or thinking of buying one of these units.

Mine is about a year old and recently we had noticed when trying to check / set the ignition timing with our snap on gun that at low speed you could kind of check the timing and the light wouyld hold steady but as you started to pick up the pace it would become very erratic and impossible to read jumping one way then the other.

We took the cap off to check the internals and found what seemed to be quite a bit of "play" in the advance mechanism going the wrong way. So you could turn the mech by hand to see it open out but when you could also turn it counter from rest.

It turned out there was quite a lot of play where the advance mech slots over the end of the driveshaft which is kind of crimped over to prevent the mech lifting off again.

We had to apply some weld to secure the shaft to the advance mech to stop this movement and re-install. Re calibrated the timing with the gun and now the light is nice and steady at higher engine speeds.

So be warned, and check your dizzys if you already have one of these as you timing could be swinging wildly - ouch.

[Erlend / bug66]

I know.

Ended up with a 1000$ set at MSD

[Torben Alstrup]

I have never seen that. but I have experinced that they either "hang" in the curve, not wanting to come down from about 20 degrees of advance to idle (10) Or the other way around wouldnt go past about 22 degrees on the way up. In all cases I had to replace the entire rotorhead then things began to work normal again.
Once they work, they are about as good as an MSD. But it does take some fiddling around.

But hey, its still better than the 1-2-3 dizzy 

T