Hey, Angus! Feeling adventurous? Do a web search on "side gap spark plugs".
Lookit how it's done. Lookit the dyno results.
Give it a try. You could be our 'sidegap' posterchild.
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E3 Spark Plugs
- Thread starter Byookanun
- Start date
Hey, Angus! Feeling adventurous? Do a web search on "side gap spark plugs".
Lookit how it's done. Lookit the dyno results.
Give it a try. You could be our 'sidegap' posterchild.
scabber
XS650 Guru
2 many thanks for dragging out this old thread and reminding me to change sparkplugs. Back in the day 50 years ago when I worked at a gas station as a gas pump jockey before pump it yourself mother fucker mechanic on duty. They had a sparkplug machine to clean and test sparkplugs. The test comprised of adding spark and air pressure to the plug until it quit sparking. If it wouldn't maintain spark at the air pressure specified it failed. You could reuse the plug if it passed. The throw it away society today a lot of good sparkplugs filling up the landfills. Wish I had that tester I might not need new plugs.
angus67
Welder's penetrate deeper!!
Ive saved old fouled plgs with my soda blaster(harbor freight style) many times.
When i was trying to awaken a 1972 xl250 honda from its 20 year nap, i prolly blasted that plug a dozen times during the process. Once i got it re-ringed, and running good, I baught a new plug
When i was trying to awaken a 1972 xl250 honda from its 20 year nap, i prolly blasted that plug a dozen times during the process. Once i got it re-ringed, and running good, I baught a new plug
Hey, scabber. Yeah, I remember those things, long long ago. They're still available, mostly used at aircraft repair facilities. Only $700. Get yours today...
scabber
XS650 Guru
Nice one. The one I operated was AC the plug manufactures must have supplied them. Now you can test those E-3 plugs.
Oh, I haven't bought it - not at that price. Wasn't too long ago these machines were getting bottom prices as workshops closed and nobody wanted them but guys like us who fancied one for their own use. I'll have one when and if one turns up at the right price -like about 30 quid or something
Actually, the basic cleaners are still plenty available, and the pressure/spark testing side is relatively easy to make... so yet another winter project.
650performance
XS650 Addict
My friend Paul recently retired as a product specialist for Denso, a very large OEM and aftermarket spark plug manufacturer among other things. One of his responsibilities was non-OEM spark plugs. Denso's Iridium plugs are used by factory racing teams all over the world, including Toyota, MBZ, BMW and others. They are also used by WSBK and MotoGP bikes. I have used them in my XS650/750 race bike for years and NEVER had a misfire, fouled plug or other problem. If any other plug would make even the smallest power increase you can be sure factory teams would use them. So, while Denso's Iridium plugs may or may not be any better than, e.g. Bosch's or NGK's Iridium plugs, they most certainly aren't any less. One final note: they do not degrade over time. I've dyno'd my engines with both new and (well) used Iridium plugs and there is no discernible difference in power, smoothness or sound. Yeah, they are pricey, but absolutely worth it.
Michaelo
650Mick
A valid point / points.....for my bike which is belting out the standard HP, with 0.50 O/S, nothing more, would you think it worth my $$$ to put these iridium plugs in? If so what type 650P?
Always been sceptical, (like 2M's rattlesnake oils) and wouldn't normally contemplate.......
Iridium plugs do and will degrade over time and from what I've observed when replacing them is the amount of carbon buildup and electrode wear. I'll take a conventional plug over them anytime,the cost isn't worth it IMO
650performance
XS650 Addict
I can only speak from my personal experience. But, based upon that I believe, 1) Iridium plugs won't add any noticeable power to a stock or mostly stock engine, 2) they resist fouling better than any other plug I've ever used (I like to tune the race engines so they are fairly rich coming off closed throttle and I've had Champions and others foul and break down in the past), 3) the Iridiums in my Dodge truck have over 120,000 miles and have almost zero visible electrode wear, and 4) yeah, they're pricey, so there's that consideration.
Ya'll perked my interest, so been reading up on Denso iridium sparkplugs, particularly the TT offering:
http://densott.com/
It appears that they claim to have changed the alloying in their new iridium tips, to avoid this tip wear problem. Perhaps that's what Jack is talking about.
Then again, there's always THIS problem:
Trying to find workable cross-references to the Denso TT is proving to be a bit challenging.
http://densott.com/
It appears that they claim to have changed the alloying in their new iridium tips, to avoid this tip wear problem. Perhaps that's what Jack is talking about.
Then again, there's always THIS problem:
Trying to find workable cross-references to the Denso TT is proving to be a bit challenging.
Michaelo
650Mick
Now that looks interesting.... Thoughts 2M?
