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For a 4 cylinder using NGK BP6HS (short reach) use Nippon Denso W20FP-U and for a 6 cylinder using NGK BP6ES (Long reach) use Nippon Denso W20EX-U or W20EP-U or W20EP, not sure why there is a choice in the long reach

Stuart.

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Hi Folks

all my small boxes agree with the original product as per the Utube video. I'm now concerned that the UTube video is a fake :huh:

 

Roger

 

I have often wondered if this entire forum is fake news. Why would apparently intelligent men spend so much time trying to keep a aged vehicle on the road when for a fraction of the cost they could have a pedal cycle to take them to the pub, where they could spend the time putting the world to rights.
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Dunno about the 4-pots but my CP spec engine on Webers uses BP7ES, the BP6ES running white. 30K mile changes are possible though I haven't always waited that long. 125K miles and counting, and no reason to consider switching.

 

I use the same plug in higher c/r engine with very high lift cam.

 

Cheers,

Tom

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Since 1993, when 4VC went back on the road, I have been using BP7HS set at 32 thou, because that's what Neil fitted.

I'm on SUs with electronic (Newtronic/Piranha) ignition, and get about 115 HP at the wheels, but even in traffic jams, never seems to oil up - although it hates such conditions and tick-over is all over the place!

The plugs don't seem to erode and I change them seldom, but I remember that (in the 1960s) my old bog-standard TR2 on points used to suffer from erosion of its plug electrodes.

Ian Cornish

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  • 2 weeks later...

Hi Folks,

the new NGK plugs lasted just 2 weeks.

Yesterday and today the car appeared to be running on 2 plugs at low revs.

Not sure at high revs as things tend to smooth out at higher revs.

 

Tomorrow I shall fit the champions and see how they play the game.

 

Roger

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Roger

 

send these plugs to NGK for there assessment.....let them do the PQI...unless they were too cheap to be true :ph34r:

 

Iain

Edited by iain
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Sounds like a mixture problem, can you recover them with a brisk wire-brushing??

Hi Folks,

the new NGK plugs lasted just 2 weeks.

Yesterday and today the car appeared to be running on 2 plugs at low revs.

Not sure at high revs as things tend to smooth out at higher revs.

 

Tomorrow I shall fit the champions and see how they play the game.

 

Roger

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Hi Dave,

funny you should mention mixture. From the colour of the plugs they were just on the weak side of good.

Have opened the main jets one flat.

 

I have also fitted Champion L87Y plugs.

It is running very well again.

 

We shall see what the next couple of weeks brings.

 

Roger

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Have heard that Champion are not as good as they used to be! Do we know if there are fake Champion &/or Nippon Denso around?!

Cheers.

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Have heard that Champion are not as good as they used to be! Do we know if there are fake Champion &/or Nippon Denso around?!

Cheers.

Champions went down hill in the late 80`s no idea what they are like now but it was at that time everyone went over to NGK`s but obviously now its difficult to tell whats good and whats bad as there is so many fakes around.

Stuart.

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