11 replies to this topic

[scoticus]

Righty, (1977, 998cc)

I need some new HT leads.

But which ones?

Copper or silicone.

I was told the silicone ones were for electronic ignition (which I dont have) is this true?

I have a set of silicone ones on at the moment, they were fine before the strip down, but now they are causing a miss-fire on 2nd cylinder.

[scoticus]

anyone?

[Guess-Works.com]

std ones, cheap and cheerful...

[scoticus]

thanks

[Ethel]

Silicone is the insulation material, inside they are just carbon impregnated string like the rest. Copper leads are best, but you will need some form of suppression on a road car which will cancel out any advantage.

[ste88]

i got some bosch ones off ebay, think they are silicon ones. They are resisted and i use the BP6ES plugs, i think you can get non resisted leads and resistor plugs too but im not sure. Anyway, mine seem to work OK
hope it helps

[scoticus]

Thanks guys...

Big help

Copper it is

[camp freddy]

Thanks guys...

Big help

Copper it is

I bought some Luminition ones from Mini spares and you get TMF+ discount
if you are a member...

http://www.minispare.....ILICON FROM...

Edited by camp freddy, 05 February 2010 - 11:09 PM.

[taffy1967]

Thanks guys...

Big help

Copper it is

I bought some Luminition ones from Mini spares and you get TMF+ discount
if you are a member...

http://www.minispare......ILICON FROM...

Yes I've got those (part no. HV22) on my Mini and their fantastic.

[Ethel]

I've been a saddo 'n done a bit of reading up...

Carbon leads will give about an ohm of resistance, which should just be enough to stop you adding a drum 'n base beat to your neighbours telly. Resistor plugs, and most resistor plug caps are about 5 ohms, which is still way too low to have much effect on the quality of the spark (negligible compared to the resistance of the plug gap). Copper's real advantage is that it doesn't deteriorate like carbon. Spiral wound leads (like Taffy's) vary the resistance along the lead which further helps to suppress interference.

[taffy1967]

I've been a saddo 'n done a bit of reading up...

Carbon leads will give about an ohm of resistance, which should just be enough to stop you adding a drum 'n base beat to your neighbours telly. Resistor plugs, and most resistor plug caps are about 5 ohms, which is still way too low to have much effect on the quality of the spark (negligible compared to the resistance of the plug gap). Copper's real advantage is that it doesn't deteriorate like carbon. Spiral wound leads (like Taffy's) vary the resistance along the lead which further helps to suppress interference.

Cheers Ethel, either way my Mini finds those leads and NGK BPR6ES spark plugs to be very agreeable.

[sazal]

I think ive got the silicone ones on my mini and am pretty sure I always have had! My last couple of sets I've had are from unipart, but mainly because there were unipart ones on the car when I bought it and I never had any problems with them Beware of cheap leads though, I've had a couple of sets that are nasty and don't clip onto the plugs properly.