SOHC.co.uk Forums > CB500/550

Changing HT leads

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Seabeowner:
You can get away with cutting out a much smaller section than that described in Ash's file. It's more tricky as you don't want to sever the secondary fine wire, but can be done. The lead that goes a long way through the potting can be pulled through once it is unsoldered. Use a thin wire soldered (temporarily) to the new wire to pull back through.

beardylondon:
even cheaper here:

https://www.squaremotorcycleparts.co.uk/products/ignition-coil-x2-honda-cb550-cb-550-1974-1978


--- Quote from: beardylondon on September 20, 2022, 06:00:03 PM ---next question, if mine need replacing, I note the TEC ones at £70 per side, are the aftermarket ones any good?

https://www.davidsilverspares.co.uk/CB550K-1976-USA/part_83533/

--- End quote ---

McCabe-Thiele (Ted):
On my 500 the distance between the coil bolt centres is 100mm, some  aftermarket ones are 90 mm so a bit of bracket adjustment will be needed.

deltarider:

--- Quote from: beardylondon on September 20, 2022, 07:47:24 PM ---even cheaper here:

https://www.squaremotorcycleparts.co.uk/products/ignition-coil-x2-honda-cb550-cb-550-1974-1978


--- Quote from: beardylondon on September 20, 2022, 06:00:03 PM ---next question, if mine need replacing, I note the TEC ones at £70 per side, are the aftermarket ones any good?

https://www.davidsilverspares.co.uk/CB550K-1976-USA/part_83533/

--- End quote ---

--- End quote ---
No doubt a generic product. Note that the primary resistance is not advertised. Advertiser should be clear on this! You don't want to find out after purchasing, the resistance is too low.

beardylondon:
Good point!

And it seems like I’d need 100mm, not 90mm’

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