What Spark Plugs

[cjs]

Standard fitting on a Griff is NGK B7ECS. Are there any better options or is that it! Do any of these multi spark type plugs fit and give better performance?

[AntonyJ]

cjs said:

Standard fitting on a Griff is NGK B7ECS. Are there any better options or is that it! Do any of these multi spark type plugs fit and give better performance?

Pretty sure these are the most suited.
Something to do with suiting the RV8 engine with there burn.

[cjs]

Anyone know the correct Plug gap?

[CRE]

Its a secret!
Cant have every tom, dick & harry knowing!!!

The plugs will come pre-gapped at .028", its always worth checking them though, however...not sure whether your's is 4.0 or 5.0 cos it does make a differrence!

jamie

[Flintstone]

The gap is different for a 4 or 5?

[That Daddy]

NGK plugs come pregapped for this car an unless some burke as dropped them there always spot on.

[CaptiV8ted]

According to the bible, gap should be 0.8 - 0.9mm

[cjs]

After closer inspection I have found my 4l pre-cat Griff has NGK B7ES plugs fitted not B7ECS. Does anyone the difference? Other than the cost as the B7ES are a cheaper!

I have contacted NGK and they have given me the following info;


B - refers to the thread dia. 14mm

7 - is the heat rating (2 is hot, 10 is cold)

E - thread length 19mm

C - ?? This is what I can't work out

S - Refers to 'Standard type' ie not Y which has a V-grooved electrode.



So anyone know what the 'C' means.

I'd rather spend £2.40 rather than £3.80 per plug if there is no difference!

[cjs]

I have just received this in the post from NGK.

[That Daddy]

cjs said:

After closer inspection I have found my 4l pre-cat Griff has NGK B7ES plugs fitted not B7ECS. Does anyone the difference? Other than the cost as the B7ES are a cheaper!

I have contacted NGK and they have given me the following info;


B - refers to the thread dia. 14mm

7 - is the heat rating (2 is hot, 10 is cold)

E - thread length 19mm

C - ?? This is what I can't work out

S - Refers to 'Standard type' ie not Y which has a V-grooved electrode.



So anyone know what the 'C' means.

I'd rather spend £2.40 rather than £3.80 per plug if there is no difference!

BP7ES will work fine its only the heat range you need to worry about and those ones are the same,the BP7ES as a slightly protruding tip thats not going to make any difference in the RV8,fit the cheaper ones.

[Crazycraig]

cjs said:

I'd rather spend £2.40 rather than £3.80 per plug if there is no difference!

Try someone like Partco Autoparts or Camberly Autofactors.

FWIW I normally pay around £1.75 + VAT for B7ECS plugs from Partco.

[rev-erend]

I think the C will stand for copper.

[TVRleigh]

Does anyone know if the tripple of quad plugs are any better or worse.

[cjs]

So a quick update....if your interested!

I have spoken to NGK and looked at the Plugs. The differnce between the B7ECS and the B7ES is as follows.

The ECS has a reinforced ground electrode, it has a 'web' where the electrode meets the main metal casing.

Also the ECS has a chamfer on the inside edge of the casing around the centre electrode. Whether this helps with any gas flow or spark.....who knows.

Other than that I am told by NGK there is no difference and both will work in a TVR RV8.

I have had B7ES fitted in my Griff for the past 4 years with no problems so I have bought 8 new ones at just £1.10 each and saved some money for more petrol!

[cjs]

TVRleigh said:

Does anyone know if the tripple of quad plugs are any better or worse.

I could not find an equivalent listed.

[rev-erend]

cjs said:

So a quick update....if your interested!

I have spoken to NGK and looked at the Plugs. The differnce between the B7ECS and the B7ES is as follows.

The ECS has a reinforced ground electrode, it has a 'web' where the electrode meets the main metal casing.

Also the ECS has a chamfer on the inside edge of the casing around the centre electrode. Whether this helps with any gas flow or spark.....who knows.

Other than that I am told by NGK there is no difference and both will work in a TVR RV8.

I have had B7ES fitted in my Griff for the past 4 years with no problems so I have bought 8 new ones at just £1.10 each and saved some money for more petrol!

If that's the case - sounds like we have been robbed..

[That Daddy]

rev-erend said:

cjs said:

So a quick update....if your interested!

I have spoken to NGK and looked at the Plugs. The differnce between the B7ECS and the B7ES is as follows.

The ECS has a reinforced ground electrode, it has a 'web' where the electrode meets the main metal casing.

Also the ECS has a chamfer on the inside edge of the casing around the centre electrode. Whether this helps with any gas flow or spark.....who knows.

Other than that I am told by NGK there is no difference and both will work in a TVR RV8.

I have had B7ES fitted in my Griff for the past 4 years with no problems so I have bought 8 new ones at just £1.10 each and saved some money for more petrol!

If that's the case - sounds like we have been robbed..

Yes you have