What type of spark plugs are you using?

[thewright1]

Hey All,

Quick question for you all, I wanted to ask what kind of spark plugs you all are using? I don't think these spark plugs have been changed in about 10 years so I think now would be a good time to change the plugs.

[bikerphil]

NGK-BP6ES (7333), non resistor.

[rpgoerlich]

Been running the NGK-BP6ES as well. They worked ok for the past year.

Finally got everything worked out on the 80G today and swapped them for platinum Autolite AP63's at $1 more each than the NGK-BP6ES.

[cywelchjr]

Same as the others, I run the NGK plugs specified in the owners manual. Been running NGK's in my Yamahas for over 23 years and they have always worked for me. I changed out the plugs in mine right after I got it because the PO had put resister plugs in with resister caps (which were also out of spec), so I went down to the local auto parts dealer and got the right ones, and got the caps from Cycle Gear (couldn't find them anywhere else locally).

[dbeardslee]

I run the NGK BPR6EIX Iridiums paired with green mikes coils. They're about as close to a foul-proof plug as you're going to find, but I don't know that I would run them with stock coils. They come pre-gapped at .035", which is a bit wide for the stockers, and they specifically tell you not to gap them as the iridium electrode is evidently pretty brittle. I'm sure you could close up the gap a bit, but you would need to be VERY careful. Since they're only available in resistor plugs, I run the non-resistor NGK plug caps on them. Great plugs - and they should be for $7-$8 each .

[Dragon Tamer]

I ran the NGK's for a long time but was never real happy with life of the things. Never fouled one out but at any time after about 5,000 miles I would have one or more start to misfire, plug looked good yet but just would not fire. Lost one on a trip into northern Minnesota a few years back and all I could get were equivalent plugs, Champion 300's (N9YC). The current set has been in there for over 20,000 mi and they are still working perfectly, had to regap them only once. I have also installed them in many other Yamaha bikes that use the same type plug with excellent results.

[Eveready1100]

NGK-BP6ES in it. Tried BP7es's once one really hot summer but was only harder to start. Average 30,000klms before plug changes.
Good, long lasting, clean running plugs

[CatatonicBug]

I just changed my plugs last night. Used the stock NGK's too. I changed them when I first got the bike, and noticed that the outsides were starting to get rusty, so I decided to change them again. I would imagine they would have kept going strong, but the rust just looked bad. In Bob Jones' book, he mentioned that he went through about a set per year on Ole' Blackie, and I still can't figure out why that would be the case...

[DiverRay]

I use the BP6ES on the Midnight, and the BPR6EIX with mikes green coils and non resistor caps on the '79. They both fire well, and I'm happy so far(over 100K miles combined in 4 years).

[TopCatGr58]

Well, I still have the black MikesXS coils, still working fine, and have run the Champion N9YC's for years. Couldn't easily find the NGK's at one time, and have had no problems with the Champions.

[Geezer]

I'm using Bosch Platinum plugs. I've had good luck with them in other engines so I tried them in my bike. I'm very happy with the results...

Geezer

[dentat2]

I tried the new E3 plugs and its the first time ive ever noticed a real big difference when changing spark plugs. Theyve worked excellent. http://www.e3sparkplugs.com/