Spark Plugs

tahoe healey · Nov 8, 2018

I've been using NGK OP6ES on my BJ8 for over 10 years. I changed them out for Champions but I am not sure I like them.
When I looked the NGK up on Amazon, I discovered some are made in Korea, some in Japan. Some say the number 7333, what ever that means. Some are copper, some are other assorted metals. Prices are all over the place.
I need some direction. What is the consensus of the group for a non racing Healey 3000?

John Turney · Nov 8, 2018

Re: spark plugs

From the North Texas AHC:

Type	NGK	Autolite	Champion	Bosch
Original Equipment – Six Cylinder	BPR5ES	935, 945, 2585, 3207	RN12YC, RN11YC	WR 9DC, WR 8DC

I'm running Champion RN12YCs.

Keoke · Nov 9, 2018

Re: spark plugs

OH! My gosh TH: Dame Desho!

Just go BOSCH Platin WR7DP

Joe Schlosser · Nov 9, 2018

Re: spark plugs

Not big Healey but I ran/run NGK BP*ES in Sprite street and race motors for 20 plus years. Never a problem or failure

steveg · Nov 9, 2018

Re: spark plugs

When my engine was tired, I ran BP5ES in the two cylinders that had fouled on BP6ES; since the rebuild, BP6ES.
I don't use resistor plugs because I have resistor wires and more than one resistance is undesirable.

Randy Forbes · Nov 9, 2018

Re: spark plugs

I've tried NGK BP5ES and BP7ES, but best results were obtained with BP6ES.

Ages ago, I had Champion N12s in there, but once they loaded up from stop-n-go traffic, they won't clean themselves off__Italian tuneup antics notwithstanding. That's never been a problem with NGKs, even when I was sorting out a tri-carb (SU) setup from a 3000 onto my original 100/6 engine.

tahoe healey · Nov 9, 2018

Re: spark plugs

Nickel seems to be cheaper than the copper NKGs. Any one know which is better? And why?
Thanks

steveg · Nov 9, 2018

Re: spark plugs

Joe Schlosser said:
Not big Healey but I ran/run NGK BP*ES in Sprite street and race motors for 20 plus years. Never a problem or failure

Is that asterisk a capital "8" - BP8ES?

Martinld123 · Nov 25, 2018

Re: spark plugs

You said you do not use resistive wires with resistive plugs which is undesirable. I use resistive wire and BP8ES. No R means no resistor, right, lol?

tahoe healey · Nov 25, 2018

Re: spark plugs

I put Champions in and drove 300 miles and pulled them out to check them and they looked blackish. I cleaned the previously used NKG (for 6 + years) and with the same gap drove 150 miles and they looked perfect (clean without the blackish looking electrodes). The NKGs seem to have a deeper reach than the Champions. Other than that there seems to be no difference. Any thoughts?

DerekJ · Nov 28, 2018

Re: spark plugs

NKG are much better than Champion. I would go for 5s in a standard car. I have 6s in my competition car, full race cars usually have 7s.

aero3113 · Nov 28, 2018

These are the igniters I just replaced on the Gulfstream G650 I manage. $1,782.00 each!!!!

Editor_Reid · Nov 28, 2018

aero3113 said:
These are the igniters I just replaced on the Gulfstream G650 I manage. $1,782.00 each!!!!

Wow. They look like they have all of the time and materials in their manufacture as common automotive spark plugs. I get it about aviation vs. ground transport (pilot for 45 years), but criminy.

tahoe healey · May 26, 2022

Resistance plugs and wires are to reduce static on the radio. If no radio, do I really need them?
In inspecting the plugs that have been in use for probably 20,000+ miles, they looked fine to me. How does one tell if a plug is still serviceable? I am getting a little roughness on acceleration. I plan to replace the plugs without the 'R".
Best to buy at Autozone/Napa type store or Amazon?

gonzo · May 27, 2022

TH. Be careful of fabulous fakes on AMAZON. Go to your local Napa for genuine sparks.

tahoe healey · May 27, 2022

Napa only has the resister type. Autozone doesn't have any and would order them if I wanted to wait 2 weeks. I guess I could use the resister type.

John Turney · May 27, 2022

I have the resistor type and no problems.

tahoe healey · May 29, 2022

How can one tell if NGKs are fake or not?

Dandare · May 29, 2022

Polygraph test?

Danny

Bob_Spidell · May 29, 2022

Lots of stuff on the 'net:

Counterfeit NGK Spark Plugs | How to Avoid Fake Spark Plugs

With stories of buyers being caught out by counterfeit NGK spark plugs, here's how you can spot fake spark plugs and ensure you only buy genuine plugs.

www.diycarserviceparts.co.uk

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Spark Plugs

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