350thumper 336 Posted October 30, 2014 Has anyone one changed out to the iridium spark plug on a big bore motor? And if so has anyone ever gone back to a standard after changing? notice a difference? Share this post Link to post Share on other sites
TrophyHunter 15 Posted October 30, 2014 Yes - on my DR650 No Negligible but I feel better. Share this post Link to post Share on other sites
robertaccio 406 Posted October 30, 2014 Yes - on my 1999 TE610 Husky No Negligible but I feel better. Seemed to start easier cold and hot. Seemed to run cleaner. (seemed=may have been a figment of imagination=zero scientific data to prove it) ZipTy Racing mentioned for me to use one in my TE300 Husky 2 stroke which I take as gospel so probably iridium equivalent to OEm plug will be in 300 2 stroke by this weekend. Share this post Link to post Share on other sites
Spaugh 1 Posted October 30, 2014 On dirtbikes it is a wastd of money. They get dirty long before the plug wears. On my supercharged tacoma, it would eat copper plugs every 20k miles, irridiums would last 2x as long. Electrode would literally disappear. Never foulded a dirt bike plug but they always are covered in junk when i pull them so usually replace every top end job with a 3$ standard NGK and good to go for a year or two. Have used irridiums on my 2Ts and notice no diff just cost way more. Gap never grows on dirt bike plugs like in a vehicle in my experience. Share this post Link to post Share on other sites
robertaccio 406 Posted October 30, 2014 Brad most likely correct but what's a couple of bucks extra, to include some hi-er tech bling into your motor!! (hahaha). Drinking the NGK coolaid!! Share this post Link to post Share on other sites
350thumper 336 Posted October 30, 2014 Thanks guys . Ya robertaccio im slappin an iridium into my husky 610. Im all over the map with this thing. Its a beast im hooked on it. Did you put an 8 or a 7? I will post results after I switch that over for other husky owners... Share this post Link to post Share on other sites
Spaugh 1 Posted October 31, 2014 best way to improve moto resutls: ride more Share this post Link to post Share on other sites
350thumper 336 Posted October 31, 2014 Thats true spaugh .. the more I ride it the more tuned up it gets. My dad had this bike and it was his last bike . He said it rode perfect to the very end when the spark issue started happening. My dad was the owner of West Coast Motorcycles over on Valley Pkwy behind vons .. in the 80's (not sure if some of the older riders here remember my dad... his name was Jay.. He had the distribution rights to ktm parts and sales before he sold that over to NCY.( Pre ron bishop)If my dad hadnt done that, NCY probly wouldnt be selling KTMs today. After my dad sold his shop in esco he had a few other bikes, this was his last .. He only let ron bishop work on the bike . So its a legacy bike for me. Rons past now and im here working on it in my spare time and raising my son at the same time.. My son says he wants to keep it in the family. I just want to ride it and relive my dads memories. Not to get side tracked but thanks for all the help guys . Im having a tough time pinpointing the spark issue. Share this post Link to post Share on other sites
robertaccio 406 Posted November 2, 2014 I installed whatever the OEM heat range was . as for ignitions issues from that era 610s have a habit of slipping their magnets. just for info. Also for @5 or more years the OEM jetting was the same for the big DelLorto carb if you run a stock pipe with the jetting and all other things being in spec, it will start and run perfectly. My last 1999 TE610 was spot on for starting cold or hot. Let me know if you want simple procedure. The TE610 from mid 90s to early 2ks were all based on the world enduro race bikes that won a bunch of championships and were very well developed. Share this post Link to post Share on other sites
PastaPilot 17 Posted November 2, 2014 Expensive plugs in a dirtbike are a waste of money. Platinum is a very hard metal and the plugs last forever but platinum isn't a very good conductor. Pt plugs are good in cars where you'll skimp on maintenance for 100k miles. The cheap copper core plugs have the lowest resistance and will provide the bigger spark, but copper is a softer metal and the electrodes break down the fastest. Most moto riders replace plugs far too often and would toss a servicable copper plug long before it wears out. Your bike, your money, your maintenance schedule, your choice, let's ride. Share this post Link to post Share on other sites
robertaccio 406 Posted November 13, 2014 hijack notice!!! tell that to the owners of RM125s circa late 90s. OEM plug is @ $30 .....the Suzuki found that due to some inherent combustion chamber design vibe resonance frequency issue that standard plugs were breaking off, destroying motors so they had NGK build a special plug.....99% of consumers were running standard plugs anyway due to $... of course I always ran the 30 buck plug, actually only replaced it one time. Now back to our regularly scheduled oil/tire ooops I mean spark plug thread..... Share this post Link to post Share on other sites
350thumper 336 Posted November 13, 2014 I havent switched yet but my husky 610 is doing better. I removed the splasher and adjusted my swimmers a lil bit and loads of power. Still using the standard plug from 1996. I want to upgrade bit it slips my mind. Next tweak I may put the splasher back in because I did both at the same time.and know the splasher helps keep the swirl down inside the main jet thimble on the italian dellorto. Share this post Link to post Share on other sites
