Guys, I have the following part #'s listed on GuzziTech as optional "inner" plugs for those who have done the dual plug mod on older Guzzis: NGK CR71/SA (not found) and/or NGK C7HSA **Found online as NGK #4629**
For the newer Guzzis (Griso, Breva, Norge, etc.), I found the following info online for the inner plug: NGK - Double Platinum - Part no. PMR8B ~$14/per I also pulled from this Forum: CR8EIX **Found online as: NGK Part #4218 - $7.28/per** (shown below) and DCR8EIX (not found).
Anyone have any (USA available) brands/numbers to add for the newer and older bikes?
Todd at GuzziTech.com SoCal GuzziTech Power Since 2001!
I forget: does NGK's number increase for colder plugs or hotter? I'm just asking 'cause the plugs for my SV are CR9EIX iirc, & I find it a bit odd that a water-cooled bike would spec a colder plug than an air-cooled Guzzi?
Yeah, yeah, I know: vastly different critters w/ no relation whatsoever, I just found it curious is all...
For NGK, lower number = hotter, higher= cooler. And while we're at it, for the C7HSA's used as inner plugs for many an after market twin plugged early Guzzi, you can get them at most any Yamaha or Honda dealer, they are used on some ATV's. Last time I bought, the Honda rebranded versions were cheaper.
On a French site, I just found some reference to Brisk spark plugs, which are supposed to have some advantages. I haven't yet managed to learn if they also allow a reduction of pinging, but the tech info on the web does suggest they might affect the syndrome:
Outer for Breva 1100, 2004-2005: L10ZS
Outer for Breva 1100 2006 and later (and presumably Norge etc): LOR15LGS
On a French site, I just found some reference to Brisk spark plugs, which are supposed to have some advantages. I haven't yet managed to learn if they also allow a reduction of pinging, but the tech info on the web does suggest they might affect the syndrome: Outer for Breva 1100, 2004-2005: L10ZS Outer for Breva 1100 2006 and later (and presumably Norge etc): LOR15LGS
We have a member (who also sells something like the RapidBike module) who's arranged to be a Brisk dealer, and who's distributed 15 pairs to people on twinzone.fr . Unfortunately, I wasn't aware of that, but I guess that we'll soon hear about any benefits.
Re: the Brisk plugs: I've read several positive reports by now, though nothing suggesting extreme improvements (so it may just be suggestion ... except for the difficult first few starts). Nothing on pinging as yet, guess we'll have to wait for summer to know about that.
