What Spark Plugs
- Thread starter lordfeyr
- Start date
MattR
Super Moderator
I always used the BR8-xx series plug.
BR8ES = standard electrode [cheapest]
BR8EG = fine electrode
BR8EIX = iridium electrode; more intense spark [most expensive]
If your jetting was a bit touchy, then the BR8EIX may help provide a better burn. With good jetting, I had no issues running any of these.
BR8ES = standard electrode [cheapest]
BR8EG = fine electrode
BR8EIX = iridium electrode; more intense spark [most expensive]
If your jetting was a bit touchy, then the BR8EIX may help provide a better burn. With good jetting, I had no issues running any of these.
roostafish
Gold Level Site Supporter
It'd be interesting to see if the plug clears up your jetting issue. If you're having jetting issues, the way I cleared mine on my 300 was the squish band mod. Seems that Gas Gas sets the bikes up pretty loose. There's room for improvement there, which makes jetting a breeze.
MattR
Super Moderator
An interesting side note on the iridium plug...
My SM610 had a stutter/hesitation with the stock plug at constant throttle around 4000 rpms (when riding on the road). I swapped it out for the equivalent plug with iridium electrode (-EIX plug). There is no more stutter/hesistation during the same ride conditions.
So there is definitely something with the more intense spark of the iridium plugs. My GG EC250 ran well on all 3 plugs, but my Husky SM610 definitely needs the iridium plug to run right.
cladoo
Site Sponsor
I use the iridium plug and it is great. 3 seasons and no troubles. When I worked at a shop in '03 we put them in many bikes and most customers raved about how much better their bikes ran, especially how much better they started up. I had a guy with a 600 Kaw and he said his bike never started good cold, we put the iridium's in and it started right away and stayed like that. He thought I did some other trick to the bike but it was the plugs.
So I'm guessing theese are all acceptable replacments for the Denso W24ESR-U plug my bike came with? I ran BR8EIX's in my KTM's and Husky.
gg3
Silver Level Site Supporter
I will be replacing the Denso plug with a BR8EIX as well.Never had a problem when using iridium plugs.Never used a Denso before,not even sure I could get a replacement here?How do they stack up regarding quality/reputation compared to a NGK?
fabulous furry
New member
plug problem
on my new 300 racing 09 i have to bring three plugs every time i go riding!i am running out of solutions i have tried all plugs including Iridium,got the cck needle and went slowly down from original 185 to 162 main jet and 42 pilot to clean the burning issue not only it pings when you cut down the throttle it got the lean feel with the fool plug attitude which makes the bike brutal and not enjoyable to ride.the plug is stinky black even with the 162 jet ??
i use 1.5 % maxim castor 927 and tried Klotz and motul esther with no change.my SWM 240tf1 ran better in the days.!
on my new 300 racing 09 i have to bring three plugs every time i go riding!i am running out of solutions i have tried all plugs including Iridium,got the cck needle and went slowly down from original 185 to 162 main jet and 42 pilot to clean the burning issue not only it pings when you cut down the throttle it got the lean feel with the fool plug attitude which makes the bike brutal and not enjoyable to ride.the plug is stinky black even with the 162 jet ??
i use 1.5 % maxim castor 927 and tried Klotz and motul esther with no change.my SWM 240tf1 ran better in the days.!
stainlesscycle
Site Sponsor
1.5% is 65 to 1.. 927 is probably not very effective at that ratio..
162 main is extremely lean..but the 42 pilot is not...
is your clutch side seal bad?
162 main is extremely lean..but the 42 pilot is not...
is your clutch side seal bad?
fabulous furry
New member
i don't think so the bike is new but what could be the relation to plug?
fabulous furry
New member
i am in Grenada island in the caribbean, very hot and humid and ride gnarly stuff sometime clear the carburation when passing thru a beach.
stainlesscycle
Site Sponsor
i was thinking that if jetting had no effect on plug fouling, the oil had to come from somewhere. the only other place for it to come from is the gearbox oil via the clutch side crank seal... does bike smoke alot?
WTEC
New member
That main jet seems really lean for sea level. I would go back up somewhere around 175-180 and maybe try dropping the needle. Sounds like its loading up in the technical stuff and then will clear out when you can open it up. Tight stuff is ridden mostly on the pilot/needle setting, so I would start there.
Wes.
Wes.
fabulous furry
New member
no the bike don't smoke and the level remain the same in gearbox.
