Spark Plugs

[lrz]

Just came from the autoparts store, picked up a new battery.

Inquired casually about plugs. While there were no NGKs in stock, there was cross reference for both Champion & Autolite as well as Bosch Super. Almost all had an iridium option.

So, what are y'all running w/ good success?

Points & electronic?

[esman100]

NGK, iridium, and points on an R90/6 and runs great.

[lrz]

My sense is to use NGK, I was unaware Champion even made a suitable plug!

[c7train]

More information on this would be great as there are no NGK plugs available locally for me either.
Cheers,
C.

[Duane Ausherman]

My sense is to use NGK, I was unaware Champion even made a suitable plug!

I was well aware that back in the days of the /2, Champion made plugs that were shown in the substitution book. They not only didn't work, but were the wrong heat range and were a factor in seizures.

It could all be different today, but I will never get over the many top ends that we had to bore due to Champion.

[CVA-42]

More information on this would be great as there are no NGK plugs available locally for me either.
Cheers,
C.

You can order them through the mail from suppliers like Bike Bandit.

[barryh]

My original BMW riders handbook from 1979 lists champion plugs along side the Bosch. The equivalent to a Bosh W5D being given as a Champion N6Y. Still don't think of them as quality plugs though. NGK for me.

[dougie]

Champion
I use one in my cheap lawnmower 'cause I don't care.

[Motu]

[lrz]

Well, one reason I ask is that AFAIK airheads, points or electronic, should not use resistor plugs at all. Correct?

Current Bosch seemed to be all (r)esistor type while NGK had both,e.g; bp6es or bpr6es which seemed to span the former Bosch w6dc-w7dc.

I'd forgotten but my rs has the plugs from the PO-autolites!

Motu-those are Bosch of some sort?