[Healeys] Spark plug gap

[simon.lachlan at alexarevel.plus.com]

I run my MkII BT7 on NGK BP6ES which were recommended by some of the wise
ones on this list.

The car has a "Sports" coil and a 123Ignition distributor. DW fast road
cam.etc

Now, talking of "recommended", the rolling road guys told me to set the
plugs at 0.028" and pooh-poohed anything bigger when I suggested that I'd
heard of much greater gaps with my approximate setup.

So, I went with 0.028.

The other day, I decided to experiment and set my spare set at 0.032". Same
NGKs, no mileage on them..decent plugs. Anyhow, it made a very surprising
difference. All round performance is much enhanced.

Despite it's 3:54 diff and 28% OD, it was never sluggish on our local hills.
But now it fairly zooms up them.

To be frank, all a bit of a surprise.

Not boasting.just putting that out there in case anyone else is thinking of
going up a few thou...

When I asked about gaps a few years back, some of the suggestions were near
0.040". Surely that a bit much?

Simon

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