Spark Plugs - Champion or NGK

[Musicman]

Hello to all -

I'm having a hard time deciding which plugs to go with. I've been using NGK-BP6ES's up till now with totally fine performance results. I just received from Moss Motors the Champion N9YC's (I believe the "C" stands for Copper) as they are the Copper Plus plugs. Am I splitting hairs here or is one plug so much better than the other?

Thanks in advance for all advice and thoughts on this matter.

Dave

 

[PeterK]

I like Bosch Platinum-4 in my 3A. They run better longer than the NGKs I had used. The NGKs would foul quickly during a rich start and not clean up after running. The Bosch have been perfect for a couple of years now.

It came with Champions and the color was good when I changed them to NGKs. Now my spare set.

 

[AngliaGT]

I've never had any luck with Champions.I'd go NGK.

- Doug

 

[Member 10617]

PeterK,

In photos I have seen of the Bosch Platinum-4, they look like they have too much reach for the TR3? Have you found this to be a problem? Also, what is the heat range as compared to the Champion L87YC provided by Moss -- hotter, cooler, or about the same?

 

[PeterK]

I am running Bosch Platinum Plus 4032 shown next to a used NGK BP6HS. hth. Pete

Edit : they run a nice turkey-turd brown, no fouling or too lean. Engine is stock.

 

[Member 10617]

PeterK,

Many thanks. I'll do some research on them.

Edit: I looked up the Bosch Platinum Plus 4032 and found that it is a WR7BP, which indicates that it is a 12mm plug. I was under the impression that the 58 TR3 takes a 14mm plug. Am I missing something here?

 

[Geo Hahn]

To further muddy ther waters -- I have used the Champions for 30+ years with no problems.

 

[bnw]

Professionally. I learned years ago to install the plugs the factory built the motor around.

 

[Andrew Mace]

To further muddy ther waters -- I have used the Champions for 30+ years with no problems.

Same here, for over 40 now.

<span style="font-weight: bold">bnw</span>, I tend to go along with you (for no reason other than I always figured that the folks who designed this stuff knew a lot more about it than I'll ever know). Trouble is, with the Herald, Lodge CNY plugs are difficult to find. ;-) Fortunately, Champion L87Ys are also recommended there.

My old GT6+ was actually very happy with its alternatively recommended AC 44XLS plugs!

 

[bnw]

Working in a Volvo store years ago I couldn't get a decent spark pattern on the scope (yes, we used oscilloscopes at one time) with customer installed new Champions. I eventually cleaned it up, and the idle too, with the proper Bosch plugs. I jumped from that store to a Chrysler dealership and did all the driveability stuff for 15 years. The Chryslers definitely performed best on the Champions they were built around. First thing I would do is get the "wrong" plugs out and get the factory ones in.

 

[Don_R]

At my buddy's shop we had more than one instance where the owner put new Bosch Platinum plugs in his chevy and had a bad miss...

We would swap the plus for the O.E. style and the miss would be gone...

 

[Brosky]

I've tried the Bosch and I went back to the Champions, due to a low speed miss. It always seemed that the AC plugs worked best in GM cars years ago and Autolite in Ford and Champion in Chrysler. But that's a very general and broad statement.

 

[vagt6]

A reputable LBC restoration shop near here, Gassman Automotive, swears by Champions for these cars. Mike Gassman says Champions seem to handle these "dirty" (e.g., not fuel-injected) engines much better than most other plugs.

Mine had NGKs in it, I changed them to Champion after a visit to Gassman's. Can't tell the diff, but these plugs do seem to be a little cleaner than the NGKs.

FWIW.

 

[Brosky]

I made a mistake when I posted above. I never tried Bosch. Mine were NGK BP6S? At any rate, I went back to Champion.