• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!

    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

TR4/4A Pertronix Ignition

HarryL

Jedi Trainee
Offline
Quick question- Shifting to the pertronix system.
The Dizzy has "25D" stamped on it.
Would 25D4 be the same?
Harry
 
Yes, if it is a 4 cylinder version. 25D6 is 6 cylinder.
 
As Randall said, yes... 25D is the shape/type and 4 is for 4-cylinder. For a TR4 with negative ground you want LU142A. If your car has positive ground it will need LU142AP12. Shop around for the best price available. When I last bought one the best price came from Retrorockets (online). You can find them by Googling for "retrorockets pertronix".
 
Back
Top