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TR6 Spark plug question

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toysrrus

toysrrus

Yoda
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Hi Folks,

What is the best "NGK" spark plug to run in my '73 TR6?

Thanx, Russ
 
Russ,

Yeah, you will probably get differing opinions on the subject....

I use Champion RN12YC (preferred) or the NGK BP5ES plugs.

Cheers
Tush
 
The replies are funny!

My TR now has "Champion N12YC" not "RN12YC". What's the difference?

Thanx, Russ
 
I think the R stands for resistor. I think they can be used pretty much interchangeably in cars without radios and other electronics but cars with radios and such should use the R plugs. Tom
 
I have the boxes in my trunk. I will report back if they are labelled.

Cheers
Tush
 
karls59tr said:
At the risk of reigniting the feud..... I had problems with the Champion plugs a few years back and switched to the NGK. I wonder where the Champions were originally made and where they are made now?
Click to expand...
Well, perhaps this is not a new issue. I distinctly remember, back in the 1970s, my local dealer service and parts department folks tell me that, because of various problems, they would routinely remove the OE British-made Champion plugs from cars and replace them with...American-made Champion plugs. Go figure!
 
M_Pied_Lourd said:
...I use Champion RN12YC (preferred) or the NGK BP5ES plugs...
Click to expand...

Another plug to ponder is the triple-electrode NGK BP5ET. I use them in my VW and Jaguar. The difference is noticeable in the VW (anything that improves a VW is noticeable) but not really noticeable in the Jaguar.

I really thought the triple electrode was just a gimmick (like triple-bladed razors) but heard so many recommendations (VW Forum) that I tried them. I also put one side-by-side with the Champion N12Y plug (both new) in a spark plug tester I have:

 
Pretty Cool Geo,

You havent run them in a Triumph yet though? Just wondering why you haven't?

Cheers
Tush
 
Roger that...just looked at your profile and I see you have the Jag, a 3A and a 4.

Cheers
Tush
 
I've been using the NGK BUR5ET for several thousand miles in my TR6
I had to enrichen the mixture a tad more than with my tried and true Champion RN12YC
 
PB, any noticible difference when driving? I might try them next plug change.

Cheers
Tush
 
It was a little over a year ago I made that transition, Tush, but at the time I think I noticed a a little smoother transition from cruising to acceleration when I gave it the gas.
Seems like there is less carbon residue left behind in the tail pipe, too, which could be a indication of a more complete burn.
I read about them on The TR Register Forum and ordered them from the GreenSparkPlugCo. over on the island...They come without screw on terminals, so you'll have to rob or order those.
 
I've run NGK BPR6 EIX iridium plugs in my TR6 for ~15 years on my stock, 44K mile TR6. I noticed slightly easier starting w/ the fine wires, but that's about all I'd expect to see on a healthy car. I've been a big fan of fine wire plugs since my Can Am 125 days.....(showing age).
 
Does anyone know the difference between the Champion L87Y and the L87YC. The former is the stock plug recc'd by Moss and the latter is what pops up on Champion's website. Also, are there some TR3/3A/4 that use a short reach plug and others a long reach? I feel like I should know this. I just purchased plugs from TRF and plopped them in the car. Didn't pay much attention to them. It seems to run fine, except for that **** pinging under load at 3,000 rpm.

Thanks

Pat
 
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