MG
The Classic Marque

Interestingly Aldon only seem to recommend their 1.5ohm coils for racing etc (3 ohm normally) with the original Pertronix unit.

“4/6 Cylinder Fast Road/Race - 1.5ohm - Chrome Oil Filled - Ballasted N.B. These coils will overheat if NOT used for race/high speed/high rpm applications”

They also do a Pertronix 11 version and they recommend a ‘Flame thrower’ 0.6 ohm coil for that...

Hello All,
So in the course of the rebuild I have welded the rear end of the front wings, the sills and the front end of the rear wings.
In other words all the places my perforated running boards attached . Angles have changed a bit , curves are not quite the same and it is proving to be a bit of a fiddle .
Anyway I have the seal/joining rubber for the front ends but it does not want ...

I was rather sceptical of his argument for fitting a 1.4Ω coil as ignitions are challenged to charge the coil at high RPM not at idle but I suppose it depends on the specifics of the PowerSpark module and how it does variable dwell. As you say PowerSpark specify a 3Ω coil so it should be good.

No Dave, they just said it was the correct coil. They said the 1.4 ohm coil is for the high power module, and mine is the standard one. Seems a bit counter-intuitive to me, as the lower resistance should raise the power.

Kevin

It was pleasure communicating with you

all the best
Anton

I have the distributor in exactly the same place as before but as you say could just be due to different components.
Exhaust was starting to sound a bit raspy but can’t recall if it’s any worse now - old age memory!!
Either way, definitely need to get timing and mixture sorted - just need to find someone, ideally locally.

Les--If it's sounding a little raspier in the exhaust than it was previously, it 'might' mean the ign. timing is back a bit from where it was previously just because you have a different set of components in the dist.
You could try advancing it up just a tiddle, mark the dist with something (whiteout--paint) loosen the dist. and turn it clockwise so the vac pot moves just 1/8" or so, that sho...

Les,

Did they say if using their ignition module with a 1.4 ohm coil might damage it?

I fitted my Hardi pump and it works fine. You can order different fittings on the outlet. The previous owner had fitted the inlet with the original fitting and the outlet with push on fitting. Since the Hardi came with original fittings, I had to find a fitting to convert one to push on. Once the pump was attached, the Hardi inlet did not line up with line on the TF. I used hose connectors fr...

Guy
Tappet clearance for the SW5 is 0.015”, standard is 0.012”.