Fake NGK plugs

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GeoffTE
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Fake NGK plugs

Post by GeoffTE » Mon Aug 31, 2020 11:04 pm

This is not necessarily related to the misfire I had with my 5, SAR, but As part of my elimination of the issues I did some research and thought it might be interesting to read as a subject in its own right. This is all available on the net after searching fake plugs. Many of you will probably know all about this anyway, but I couldn't find any discussion on the matter so here goes: it's common knowledge that fake NGK plugs are rife for sale on the 'net, but how do you identify them? First of all of course is to buy from a reputable source and avoid eBay and Amazon if you can. Not saying they're all necessarily fake, but you may be more likely to find them there. Here is a picture of 4 fake NGK plugs that I bought some time ago. They were not fitted to SAR as far as I can remember, probably fitted to the Elan which uses the same plugs.
IMG_1054.JPG
IMG_1054.JPG (367.46 KiB) Viewed 673 times
These are the things to look for, ( not all may apply at the same time)
1. The gasket "washers" should be secure. They must not be able to be pulled down over the thread.
2. The 'P' in "MADE IN JAPAN" should be underlined. If it's not..fake.
3. The NGK printing should be properly central on the ceramic part, not too high or low
4. The colour of the metal part may be more gold than silver
5. The height of the central metal part, where the " made in Japan' is printed should be 8.48 mm. These fake ones are 8.23 mm
6. The printing on the ceramic part may be fainter and of thinner font
7. The electrode, the raised bent bit, should be a smooth curve, some fake ones are squarer closer to 90 deg bend.
8. Just above the hex shoulder on the metal part before the ceramic starts, fakes may show a sharper edge as if cut on a lathe rather than a curve

I hope that this will be useful. Take me to task if you disagree with any of my findings, but be kind. :D
Incidentally SAR was fitted with 5 French made BPR6ES plugs ( blue lettering, which is normal) and one BP7ES. No idea how that happened :roll: She now has 6 genuine BP6ES plugs and is back to her former self


Geoff. (5324)
SE5 (SAR), Lotus Elise S2, ( now sold :-( ), 1965 Lotus Elan S2, Ford Kuga 2 AWD
The older I get the better I was!

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DARK STAR
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Fake NGK plugs

Post by DARK STAR » Tue Sep 01, 2020 6:12 am

It seems you can't trust anybody nowadays.
Great research.

I wonder if my Bosch plugs are real ...


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website site Scimitar EUROPEEN
On the road I don't drive fast, but I don't slow down for corners
In competition I drive very fast, but not always on the track ...

willholderogri
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Fake NGK plugs

Post by willholderogri » Tue Sep 01, 2020 6:42 am

I have just bought a set locally from eurocarparts will check them latter thankyou


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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scim_rebel
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Fake NGK plugs

Post by scim_rebel » Tue Sep 01, 2020 8:22 am

Useful information, thank you.


Carl

1968 SE4a & 1971 SE5
1972 Fairthorpe TX-GT

Previous: 1968(x2), 1969, 1970 & 1971 SE5s, a brace of Rebels plus a 1970 Trident Clipper. Does a 2004 MG-ZTT count too?

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Dot
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Fake NGK plugs

Post by Dot » Tue Sep 01, 2020 9:12 am

Good info thank you ,I have just bought a pair from e bay and suspect that the troubles i have had with two of my old bikes are down to dodgy plugs. Ray



willholderogri
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Fake NGK plugs

Post by willholderogri » Fri Sep 25, 2020 11:28 am

Found a good use for fake plugs
IMG_20200925_112308922.jpg
IMG_20200925_112308922.jpg (211.05 KiB) Viewed 366 times
IMG_20200925_112302132.jpg
IMG_20200925_112302132.jpg (203.43 KiB) Viewed 366 times


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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DARK STAR
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Fake NGK plugs

Post by DARK STAR » Fri Sep 25, 2020 11:55 am

Neat, but it won't fly unless you use real ones :mrgreen:


Chris Johnson
RSSOC 1979> Rhubarb SE6a V8 1979-1997 Dark Star Coupé 1989> Scimitar France 2010> Vert Soleil GTC 2014-2018
Scimitar France Website site Scimitar EUROPEEN
On the road I don't drive fast, but I don't slow down for corners
In competition I drive very fast, but not always on the track ...

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adamwilkes
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Fake NGK plugs

Post by adamwilkes » Fri Sep 25, 2020 1:39 pm

willholderogri wrote:
Fri Sep 25, 2020 11:28 am
Found a good use for fake plugs
. . . . you must have lots of spare time on your hands :lol:


Adam Wilkes
Scimitar GTE 5a 1973, kinda Highland Purple; after months of work, still a ruin!
I can't help myself - I have to ask questions and find out why. Why ? Dunno :shock:
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willholderogri
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Fake NGK plugs

Post by willholderogri » Fri Sep 25, 2020 1:59 pm

adamwilkes wrote:
Fri Sep 25, 2020 1:39 pm
willholderogri wrote:
Fri Sep 25, 2020 11:28 am
Found a good use for fake plugs
. . . . you must have lots of spare time on your hands :lol:
A bit of fun in the present circumstances. I made them to teach students at work some time ago and found it today, Dark star it does fly straight down to the floor :)


1962 mini, bedford CA , KR200. morris 1000, mini pickup.several escorts,ford grandad.ford cortina X2 ,astra, SE5A x 2 ,ford focus.

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