Plug substitution/comparison

[llamakc]

I currently run the NGK DPR8EA9 plug in my 05 Aero 750. I just went up to our Autozone and they didn't carry that plug. They cross-referenced a Champion 809c (RA6HC).

Would you use these? Or should I wait until I get to my bike shop? I am switching to a new set of plugs to evaluate a lean/rich situation after going to a K&N.

-llamakc

[navillustoo]

I currently run the NGK DPR8EA9 plug in my 05 Aero 750. I just went up to our Autozone and they didn't carry that plug. They cross-referenced a Champion 809c (RA6HC).

Would you use these? Or should I wait until I get to my bike shop? I am switching to a new set of plugs to evaluate a lean/rich situation after going to a K&N.

-llamakc

I am not a fan of Champion plugs. I only run them in my small engines (lawn mowers and such) because I have to. Finding replacements in Autolite or NGK is difficult at best. I would NEVER run a Champion in something I'd have to push home! Stick with the NGK's!

Brian

[llamakc]

Thanks Brian. I trust your opinion. You have helped me out ALOT in the last year. I'll return (yeah I bought em) the Champions and wait a day to grab some NGK's.

[RustyJake]

You can also run DPR9EA-9 in the bikes. The manual lists them for 'high speed' driving. I do mostly highway riding and have run them since the first time I changed plugs.

[navillustoo]

You can also run DPR9EA-9 in the bikes. The manual lists them for 'high speed' driving. I do mostly highway riding and have run them since the first time I changed plugs.

Jake,
The "9's" are a colder plug, thus the high speed driving recommendation. If you ride around town on them for awhile, you will likely foul them. They should only be run for extended periods of high speed. Now, here's another twist. If a person has modified their exhaust and not rejetted, they can get away with running the "9's" around town because the engine is lean enough that it won't load up and foul the plugs. Have you done a rejet?

Brian

[navillustoo]

Thanks Brian. I trust your opinion. You have helped me out ALOT in the last year. I'll return (yeah I bought em) the Champions and wait a day to grab some NGK's.

You're very welcome! Although I must say, I don't know why a bike as new as yours would need a plug change already. Have you been riding the wheels off of her? I've had my '95 1100 since May '01 and have yet to change the plugs. These Hondas are very easy on spark plugs, probably 'cause there's two of 'em per cyclinder. Most efficient burn! Anyway, you can't go wrong with the NGK's!

Brian

[Ghost_Rider]

IIamack, I'm curious about this topic as well. I had been using Champion before and noticed that when I twist the throttle, sometimes the ignition stop a second before it accelerate.

Brian, what is your opinion about platinum spark plug? Currently I'm using platinum NGK DPR8EVX-9 and ride in traffic jam almost everyday.

Herbert

[RustyJake]

Nav, I'm running a stage 3 jet kit in mine with open intake and aftermarket pipes. My riding is mainly highway. I work in a city, but it's a 30 second drive off the main highway. I can't say I'm ever in a city for more then 30 minutes to an hour. Then it's a 35 minute highway ride home.
I've actually found my bike runs better with those plugs, except when I run the cover for my air cleaner. Then the bike runs rich.

[navillustoo]

IIamack, I'm curious about this topic as well. I had been using Champion before and noticed that when I twist the throttle, sometimes the ignition stop a second before it accelerate.

Brian, what is your opinion about platinum spark plug? Currently I'm using platinum NGK DPR8EVX-9 and ride in traffic jam almost everyday.

Herbert

Herbert,
What you experienced running the Champions is exactly why I don't use them, they tend to misfire and foul easily. I don't know why that is nor do I care, I just won't use them. NGK's are the best plug on the market in my opinion. When I can't find NGK's for any of my engines, I've found that Autolite are a good substitute. Copper-core plugs are good, but platinum are by far the best, and the most expensive! But they'll last longer than any other plug including copper-cored plugs. You can't get a better plug than the NGK Platinum's!

Brian

[navillustoo]

Nav, I'm running a stage 3 jet kit in mine with open intake and aftermarket pipes. My riding is mainly highway. I work in a city, but it's a 30 second drive off the main highway. I can't say I'm ever in a city for more then 30 minutes to an hour. Then it's a 35 minute highway ride home.
I've actually found my bike runs better with those plugs, except when I run the cover for my air cleaner. Then the bike runs rich.

Jake,
The route you ride must be taking care of cleaning the plugs! Apparently you don't ride at low speeds enough to foul the colder plugs, 30 seconds off the main highway wouldn't do it! Other's that have tried the colder plugs for a distance ride have complained that they fouled them riding in traffic. I'd say you are the lone exception that has run the 8's with no problems. This is good to know!
PainterD I believe, tried a set last year and promptly took them back out, he didn't like them at all. I believe he fouled them when he got off the interstate and into city traffic.

Brian

[RustyJake]

I'm definitely going to run a test with the air filter cover on and running the other plugs, now that you've brought that up. It makes total sense, and I'd rather use a plug that I can run with or without my cover without having to rejet.
Thanks for your input on this, I hadn't even thought about the plugs and the issue I have with the rain cover.
I guess it'll be a plug change this week again.

[Ghost_Rider]

Herbert,
What you experienced running the Champions is exactly why I don't use them, they tend to misfire and foul easily. I don't know why that is nor do I care, I just won't use them. NGK's are the best plug on the market in my opinion. When I can't find NGK's for any of my engines, I've found that Autolite are a good substitute. Copper-core plugs are good, but platinum are by far the best, and the most expensive! But they'll last longer than any other plug including copper-cored plugs. You can't get a better plug than the NGK Platinum's!

Brian

Thanks Brian,

Previously I thought something is wrong with my ignition system, considering that the bike is 10 years old!

[llamakc]

Ya know I went to get the NGK DPR8EA-9 plugs because that was what the Stealer put back in my bike after they had to fix the fuckup from my busted valve cover bolt.

When I was digging through my MOM today for the oil fill amount w/a filter change (2.75 qt by the way on the 05 750 Aero) I saw were I should be running the DPR6EA regularly or the -7EA for highway rides.

So my Stealer put in 9EA's. I replaced those. My setup is: punched resonator wall @ 3 & 9 o'clock, rebar punch @ 12, 3, 6, & 9. My plugs I pulled where a light tan. I have NOT rejetted yet but realize I must if I do the snorkelectomy.

[Tangledj]

ummmm,what the hell are you talking about!! Im totally lost.
Your not supose to put rebar of any length in your spark plug hole.And why
are you puching the wall? Im confused,and scared!! momma!!! :spidereek
lol

[navillustoo]

ummmm,what the hell are you talking about!! Im totally lost.
Your not supose to put rebar of any length in your spark plug hole.And why
are you puching the wall? Im confused,and scared!! momma!!! :spidereek
lol
J,
You really are tangled! hehehe!

Brian

[UncleFestes]

Bosch sch,sch.... Need I really say more $20 bucks and will last 100,000 miles I run the "9" Platuimn...

[Drepanon]

What i hear is that the owners masnual is geared for tempuratures in Japan... i also hear that champion plugs not only run poorly in our bike... but can actually screw things up...

Of course... i hear all sorts of differing opinions on everything under the sun... lol

i just removed a fouled plug recently... the bike has 4,000 miles on it... it is now running rich... it was jetted after installing the tornado intake... and they never really got it right... also it was jetted during a cold-snap in the early part of winter.... in addition i just put in monster baffles (it was open pipe before) and as the weather gets incresingly warmer... the bike is running richer and richer...

i have been thinking about having it dynoed... but for now... a lil rich is better than lean

[Paradox]

Try to run what it was not designed to run, and you wonder why it dosent run right! Tha's a no brainer.