Thanks Ron, I have a spare also, I'm just trying to hone in on the issue before pulling parts.

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With best regards

Al

I'd just replace the unit with the Pertronix as you were considering. This would eliminate all the guesswork/problems and give you a better system.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

Sorry, my British car manual lingo surfaces some time. LT = Low tension = low voltage (12V). HT = high tension = high voltage (40kV).

Go with Petronix. I have it in 2 cars and love it. If you don't have a tach, then get the flamethrower coil too. It totally eliminates the transistor unit. Money well spent in my opinion.

Bert

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'70 111 280SE/c 3.5 (4 spd manual) - sold
'63 MGB
'73 MGBGT V8

I use the pertronix, and love it

__________________
Ron
2015 Porsche Cayman - Elizabeth
2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace

Ditto. Except it's inconvenient to disconnect the unit when I want to leave the ignition on without the engine running. I understand the new design units don't have this problem, however.

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1981 300TD 310k miles
1970 280sel 172k miles
1966 230 Fintail 162k miles

"Where are we going? And why am I in this hand basket?"