surlyjohnnyb

Member

• Jul 8, 2015

• #1

I've just fitted the second set of new points and condenser to my Lucas 45D distributor. The first new set lasted about two miles before the plastic heel that contacts the cam, melted where it joins the metal arm of the actual points. I fitted a second set today, ran the engine for maybe a minute, and the same thing happened again!

 

surlyjohnnyb

Member

• Jul 8, 2015

• #2

I also have new coil, HT leads, cap, rotor arm and plugs.

 

J

John S

Well-Known Member

• Jul 8, 2015

• #3

There's something wrong on the low tension circuit. You've changed out the HT circuit but there is a problem somewhere. Not experienced that. Dodgy coil?

 

Datatek

Well-Known Member

• Jul 8, 2015

• #4

Duff condensor possibly.

 

surlyjohnnyb

Member

• Jul 8, 2015

• #5

It's the second condenser too.
How would I know if the coil is faulty?

 

oxides

Well-Known Member

• Jul 8, 2015

• #6

The only thing I can think that would do this would be if the live was connected directly to the points and not via the coil. You should only have two wires on the coil, white to the + terminal and black/white to the -.

 

fv1620

Active Member

• Jul 9, 2015

• #7

Are you sure that the coil is correct?

The resistance of the primary should be in the order of 2.8 - 3 ohms. If it is a coil for electronic ignition or for a ballast resistor in circuit it with be much lower than that, which will mean the points have to switch a higher current than they were designed for.

But some points these days are of very poor quality.

 

surlyjohnnyb

Member

• Jul 9, 2015

• #8

I think there's a short somewhere. I've got an electrician coming for a look at it...

 

surlyjohnnyb

Member

• Jul 9, 2015

• #9

It WAS the coil. The new one I fitted was a dud, so much for NOS...
Thanks guys.

 

jockmurray

Active Member

• Jul 9, 2015

• #10

personally i rip the crap out and bang in an electronic conversion from powerspark

 

J

John S

Well-Known Member

• Jul 9, 2015

• #11

Hey result! Enjoy getting up n running. I'll bank this knowledge for sure.