hey guys, what spark plugs should we be running in the iq 440 motor with l/c domes??? i think there are BR9ES in it right now.. not sure if thats the right sparkplug or not

thanks

come on... any one????? it cant be that bad of a question lol

what your running is fine. im running the champion i forget the type. im to lazy to change them out.

can those same ngk plugs be ran in the high comp domes?

http://www.ngksparkplugs.com/part_finder/s...les/default.asp

Mr. prox posted this link not to ong ago

whats the difference between the BPR9ES. thats what it says i need on ngk's sight, but fufanu says he has BR9ES?

i believe theres no difference to them,

Yes there is. Hold two side by side and get back to the computer. The P means projected. Depending on head design it makes for an increase in ignition timing as the electrode is closer to the piston when spark occurs. Projected plugs are iffy to run in motors that call for a Standard reach plug for the obvious reasons.

ok, thanks for the link... so XSKIER, am i better off to just run the BR9ES than the BPR9ES??? i think i might just stick with the ones im runnin

Liberty motors run projected electrode plugs

do you guys know if the BRP9ES plugs are easy to find like the BR9EYA plugs that the cats use, or will these need to be ordered?

I got my BPR9ES at the local Polaris dealer I think, either that or the auto parts store. I can't remember. But they didn't have to be ordered.

they should have them at your dealer.

and yes im running NGK's in my 800 motor and i ran them in my 660 motor as well. i prefer them over the champions as the champs would crack in the porcellain around the electrode and take out motors. i had a set crack on me, but i caught it in time. i just happened to have the plugs out and noticed the crack.

What are you using in your mod's?
I thought about the NGK Iridium's, is that a good choice? Or are the regulars better?

alright, picked up 4 bpr9es for like 13 bucks at auto parts store!! thanks guys

i just took a look at my plugs... they are auto lites 4054's. dont quote me 100% on the number though. whats everyone's opinions on these?

champion RN57YCC... part #3070190... is polaris recommended for 05-06 440's

I wouldn't run the Champion's. I luckily caught a pair of the Champion's with a chip in both plugs before they did any damage. Run the NGK bpr9es

But what about the mod 600-s. Do you run the Iridiums or? I have one mod engine wich has the iridiums and one with the BPR9es.
Wich are the most commonly used? The engine will run 87-8800rpms with Dmax racepipes..

the iridiums run hotter