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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - Relpacement sparkplug for the NGK BPR6S

There has been a great deal of discussion on the BBS regarding the best plugs for MGs in general. The most often recommended is the NGK BP6S or the BPR6s, the resister version and best suited if you have a radio installed. After much consternation in trying to find a set of BPR6S plugs, I Discovered that these plugs have been discontinued and replaced with the below plugs.

According to the Tech Rep at NGK, the Iridium is the best choice. I think that this overkill. My choice is the G-power. The below list of currently available and recommended plugs for MGs is provided below and may help in your selection.


1964 MG MGB 1.8 L4 2-1 bbl
NGK Spark Plug

Standard BPR6ES
(Replaces the BPR6S

V-Power BPR6EY
(Hi Performance version)

G-Power BPR6EGP
(Platinum)

Iridium IX BPR6EIX

Recommended gap for
Stock ignition: .025"
Electronic ignition: .035"

Check out the following link for a more detailed description.

http://www.ngksparkplugs.com/products/spark_plugs/index.asp

Frank Grimaldi


Frank Grimaldi

Hi Frank

We still use BP6ES plugs, BP7ES if driving a little more spiritedly and if in hotter conditions and BP8ES for race use. We recommend cleaning the plugs regularly.

Peter
P Burgess

Anything other than the basic plug is probably overkill for an MGB, the platinum is to enable modern engines to go for long intervals as well as meet the very low emissions limits.
PaulH Solihull

MGB standard 1800 engine:
For the last few years I've used the BP6ES. Recently I went to buy another set from my local auto parts store (Halfords) and they didn't have any. They told me the BP6E is the correct one for my car, so I bought some.
The NGK Spark Plug Catalogue 2011 (UK) states that for the MGB 1.8 4-cyl 1962-80 their recommended plug is BP6E, and an alternative is BP6ES.

The plug packaging has the following information:

BP6ES: Wider heat range, better engine performance, improved cold weather starting. Copper core to the tip of the centre electrode provides faster heat dissipation. Maximises engine performance at both high and low speeds.

BP6E: Wider heat range, better starting and acceleration, reduced emissions, protects catalytic converter. V-grooved electrode - a 90 deg. v-groove of the centre electrode provides enhanced ignitability resulting in better starting, acceleration and fuel economy. All NGK spark plugs incorporate copper core technology.
Brian Shaw

Hi Brian

As we understand it the Non S plugs were designed to burn better under leadfree conditions, we havs seen no difference in mpg or bhp when using the non S plugs.

Peter
P Burgess

This thread was discussed between 22/08/2011 and 24/08/2011

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