Spark Plug Gap

[Bob]

I was kindly given some double platinum spark plugs for my HGT from my local garage.
Anyone know what measurement the gap should be for best performance?

Cheers

Bob

 

[Tom]

The one they come with.

 

[Anonymous]

It says on the side of the box to adjust the gap to the car manufacturers recommendation.

Bob

 

[Tom]

What make are they?

 

[Anonymous]

NGK.

 

[Tom]

model?

 

[Anonymous]

155 HGT

 

[Tom]

Whats the number on the spark plug

 

[Anonymous]

Haven't got the number with me.

Thought it would be a standard gap for all spark plugs.

Cheers

Bob

 

[Anonymous]

Just looked and the manual I got says:

2,0 l/108kW - 0,9 mm
2,0 l/113kW - 0,8 mm

sven

 

[Gaz]

See Tom why couldnt you be helpfull like sven and just answer the question.

 

[Tom]

Do the 147 and 155 even take the same spark plugs?

 

[Anonymous]

2,0 l/108kW
Bosch = FR 7 LDC
NGK = BKR 6 EKC
Champion = RC 8 BYC

2,0 l/113 kW
Bosch = FR 6 LDC
NGK = BKR 6 EKC
Champion = RC 8 BY

sven

 

[Tom]

So they take the same NGK and champion plugs but different bosch plugs?!

 

[Anonymous]

The champions arent the same!!!!!
The last letter has to do whit the thermal value.

I guess the NGKs have a wider termal range than the others.

sven

 

[Tom]

No, the number is the temp range, the C means copper.

If it was CC then its a double copper.

 

[Anonymous]

But it also says the word Champion on it which in my experience is - cack!

 

[Tom]

Uh huh.

 

[Ady]

I honestly dont think that the spark plug gap makes an ENOURMOUS difference - unless of course you can slide a pound coin between the two!!!!

The best advice i was given years ago was to take the packet they are in - rip some of the cardboard off and use its thickness as a guide - I have done that for ALL my 11 cars in 9 years. NOT ONE WENT WRONG OR HAD A SPARK PROBLEM.

Ady