7 replies to this topic

[johnnysti]

Hi all
Was looking to get a set of magnecor ht leads and changing the spark plugs. Anyone know if the leads are worth doing and what the best plugs for a heavily modified engine??

Thanks

Johnny

[Jammy]

Depends when you last change the HT leads, but if it been over a year then I would.

With the spark leads it all depends on the spec of your engine, and in particular the cam. I have quite a lairy cam in my 1425, I was running NGK BPR6ES spark plugs, but these kept sooting up, have just switched to BPR5ES and it runs alot better. The number denotes how hot they run (smaller the number the hotter they are), so if the spark plug runs hotter it burns more C**p off, but won't last as long.

Please note that applies for NGK spark plugs, I think Champion have their own coding system.

[johnnysti]

What about these?


http://www.sparkplug...pplications.asp
The Iridium spark plugs

And these leads

http://www.sparkplug...necor-leads.asp
The 8.5mm ones

I had the leads on my mazda mx6 and total got rid of the flat spots i had

[Jammy]

Those links don't work and it all depends on the spec of your car.

[Guess-Works.com]

The best thing for a mini is stock leads and stock plugs within and change both of them once a year ( more for the plugs if you drive some miles )...

I use BP7ES's in my 1330 as Jammy says, mine needs to run a little cooler, I had a try with 8's by they were no good..

It's not worth spending too much on super fandango silicon leads or triple sparks, as the mini ignition system just wont cope... KISS Keep it simple stupid

[johnnysti]

Ive got GM spark plugs in at the mo!! Is that ok?

[The Matt]

hard to tell without knowing the spec of the GM ones.

[Jammy]

As with most things on a mini spark plugs will perform differently with each engine. I know the NGk BP6ES (BPR6ES if you electronic ignition) have a huge temperature range so will be suitable for most mini engines unless its really been changed alot from normal, and even then they may be ok. So I would say any spark plug that is a direct replacement for the original should be fine.

Bottom line is, if it ain't broke, don't try and fix it.