I just picked up a set of NGK's and damn there expencive compared to autolites and other plugs. mine were $6 a piece hell i bought 8 plugs for my truck for $11. Where do you guys get your plugs and what do you normally pay?

 

I have an MSD and a couple NGK R5672A-10's that I'm going to convert to side-fire but that's only for the leading plugs; currently I run the 99 cent autolites there. The trailing are and will remain the stock NGK's.

 

what about denso's man theyr'e the new **** for rotaries abel iberra's using it on his 6/7sec rx8

 

I have NGK in my car.

 

Man $6.00 per plug is Really cheep. Around here they list at $25.00 CND

But the parts store sell them at cost so they are less but not any where near $6.00.

I have NGKs in my car

 

I use the NGKs and they seem to last a long time. I'll try the Autolite 2626s in the REPU after I convert to electronic ignition. A few points:

1-the tip of the plug must not extend into the swept area lest it ruin an apex seal.

2-gap can only be .025 for a points ignition (e.g., REPU) but can be .050 for electronic ignition. I'm not sure about DFLDIS, which I haven't tried.

3-I think the multi-ground wires are to avoid fouling, and I guess that's a problem with oil-bearing fuel systems like 2cycles and rotaries.

4-I'm not sure why side fire is preferred except to move the electrode out of the swept area.

5-somebody makes a plug with a much smaller diameter center electrode (the theory being that firing occurs more easily with a smaller diameter) and I wonder if anyone has experience with such plugs.

B

 

I got several sets of Nippondensos on a group buy and used them for a little while... they look very similar to NGKs... just got a fresh set of NGKs from www.mazdaformance.com for $4.90/each+shipping.
Back to NGK!

 

NGK with DLIDFIS in my REPUs, Cosmo, MG, etc.

 

I just picked up a set of NGK BR8EQ-14s, and I've got a set of semi-used BR9s that I'm gonna use for highway runs.

With the guy who blew his engine on detonation from the Autolites, I think it's worth the 9$ Canadian apiece I got the NGKs for. I mean you only change your plugs once every two years anyway, so why complain about the $40 it takes to swap them. That's $1.70/month or less! I can surely afford that for my car!

The ones I really would love to try are:
http://www.sparkplugs.com/more_info....92272&pid=9119

They're bloody expensive, but the more I read about Iridium, the more I like it And those would probably last me FOUR years instead of two.

Plugs that aren't side-fire: avoid like the plague
Plugs that are autolite: also avoid like the plague
The Plague: Avoid like SARS.

Jon

 

6 bucks is pretty common. i wouldnt use anything but NGK in my rotaries. there is a reason they came from the factory with the NGK's

 

For my money Denso makes the best plugs for SA/FB RX's. Autolites are terrible plugs, thats why they're cheap. NGK is what I run in everything but my RX, and they're great for 13B cars, but they just aren't quite as nice as the Denso plugs for the 12A.

 

DENSO BETTER THAN NGK?

HOW DO YOU FIGURE?

THAT IS INTERESTING TO KNOW SINCE I CURRENTLY HAVE DENSOs IN MY 12A. CAN'T TELL THE DIFF PERFORMANCE OR LONGEVITY WISE BETWEEN THE TWO? WHAT IS THE PRICE DIFF? I DIDNT BUY MY DENSOs SINCE THEY CAME WITH THE CAR SO I WOULDNT KNOW HOW MUCH.......

 

NGK from mazdatrix. The cold "highway" plugs, and they seem to work flawlessly.

 

The "highway" ones are BR9s right? (general question, if anyone knows)

I've got a set of each BR8s and BR9s now, so I'll use the city plugs in the city, and the highway plugs when I go for long highway drives like to Toronto.

1stGen_tn, why are you yelling? Use your indoor voice. (turn caps-lock off, when you type in caps it's the online equivilant of screaming at the top of your lungs).


Jon

 

Yeah Br9 something something. Are you really going to be changing the plugs that much? I read somewhere you could run different heat plugs for trailing and leading, but I didn't research it up so I never tried it.

 

I use NGK's BUR9EQ-14 in both of my rotary cars I also use them [diffrent plug] in my 91 626.

Dan

 

I use NGK's BUR9EQ-14 in both of my rotary cars I also use them [diffrent plug] in my 91 626.

Dan

 

'84Special: yeah, aparently the 2nd and 3rd gens typically run different temp plugs for leading and trailing. Dunno why. I'll have to find that out.

Honestly I don't know if I'm gonna change plugs that often... I'll have to see what switching from BR8s to BR9s does for efficiency, power and gas milage. Probably not a hell of a lot. I got the BR8s because I figured I needed new plugs... but the ones that were in there don't look so bad.

Jon

 

NGK Here... As far as I know, there's no other! ;-)

I used Bosch Platinums in my other imports, but I figure NGK's from the factory on an engine as special as the Rotary meanns NGK is what I need to use. :-)

 

I would rather pay more for the proper plugs than pay less for a crappy plug that might only last a few weeks or even damage the engine. NGK all the way here.

 

NGK BR8ET. Are these the best for a bridgeport 12a?

 

Running Denso's here too. Have been for nearly a year. They've been running with the FC coil direct fire mod for the last month and my gas mileage has noticeably improved and the engine has actually become a little more quiet if that is possible with a rotary

 

still no answer to my question about the Denso's. Obviously NGK is the favorite of the crowd. Plus, they're OEM so they must be the best right?

So where do the Nippodenso's come from? Where do you get them? Are they really that much cheaper/better/worse?

Seems like somewhere I heard that Nippodenso is Japanese or German....anyone know for sure?

Oh, vipernicus42, sorry 'bout the yelling.... I replied while I was at work that day and I am a draftsman so all my work is done in CAPS. You know, so no one gets confused about what the drawing says when it's time to build the part out in the shop. I'll try to remember next time.

 

Denso's, Auto zone! They are basically NGK's

 

Checked out the Iridium's... Sound COOL. Anyone tried in their 12a yet?? May have to inspect one and measure to see if it will go in without going in too far.