Thread: what's this please?

My 2.25 voltage drop when cranking is so small that I have no benefit from a ballast resister. currently starting without a choke. I am concerned about point contact life as I have left the Key on a few times. I fitted aftermarket chineese coil/dist. havnt tracked down replacement parts yet.


My ser3 had an unmarked coil and electronic ignition. the last owner told me it destroyed a few coil until auto elec fitted a ballast and separate power supply for the ignition module.


My P76 and holdens needed all the coil power it could get when cranking.
simply fixed with dwell control ignitions kits of the day.

Originally Posted by Dark61

Mick,
What's the difference between the 25d4 and 45d4 Distributors + how do you know what you have ? Is there something stamped on it?
cheers,
D

It should have the model number stamped on the body.
In identifying by appearance I don't think the 45D4 has the adjuster on the vacuum advance.
Different advance curves are usually the main difference in the models.
With Fergy petrol tractors there is a considerable variety of Lucas distributors with different advance curves.
Pic of a 25D4 below.

[ame]http://mgaguru.com/mgtech/ignition/pdf/tuning_lucas_dist.pdf[/ame]


Scroll down the page to "Background" to answer a few questions.
Hope this helps.


Cheers, Mick.