Honda ATV Forum banner
1 - 20 of 35 Posts

·
Registered
Joined
·
82 Posts
Discussion Starter · #1 ·
i have a stock 300ex with a supertrapp slip on exhaust and it has a K n N filter with no lid. not sure if carb has been jetted but seems to run good? i just bought a 14 tooth sprocket for front and a new stage 2 AMR rev box and AMR monster coil. will i noticed any gains from these three new items? and also what size jets should i have in my carb?
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #2 ·
and also need to know if i should just get the standard spark plug or is the DPR8EIX-9 premium plug really any better? has anybody got any good reviews on them?
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #3 ·
and 1 more question ive got these denso iridium power spark plugs IK20 5304 they where for a neon. here is the Product Description
DENSO Iridium Spark Plug, 14mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Removable Terminal, ISO height, 0.4mm Iridium Center Electrode, Tapered Cut U-groove Ground Electrode, .044" (1.1mm) Gap, Heat Range 20


ok now heres the description for the DPR8EIX-9 Laser Irodium
Extreme Long Life Laser Iridium Plug, 14mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Projected Tip, Solid Terminal, Iridium Tipped Fine Wire Center Electrode with Platinum Tipped Tapered Cut Ground Electrode, .044" (1.1mm) Gap, Heat Range 5

they seem to be the same thing to me other than the heat range? the one for car is heat range 20 and the one for atv is heat range 5? will it work in my atv? whats the heat range thing about?
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #4 ·
i have a stock 300ex with a supertrapp slip on exhaust and it has a K n N filter with no lid. not sure if carb has been jetted but seems to run good? i just bought a 14 tooth sprocket for front and a new stage 2 AMR rev box and AMR monster coil. will i noticed any gains from these three new items? and also what size jets should i have in my carb?
so do u think ill notice the gain with the rev box and coil? and what do you all think about the premium spark plug is it worth it? also what jets would u use with this setup? Thanks
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #5 ·
please anybody?
 

·
Super Moderator
Joined
·
18,228 Posts
The heat rang determins how the fuel is burnt I believe. I think that may be a little too high. Helmut post a sparkplug 101 up here check that out, it should give you some knowledge about how to choose the correct plug.
 

·
Premium Member
Joined
·
6,616 Posts
Yes, you will have performance gains from those mods. I agree that the car spark plug might be too much. If there is no spitting or sputtering through the RPM range you should be in the correct neighborhood for jetting. How does the spark plug look?
 

·
Premium Member
Joined
·
4,389 Posts
Yeah you deffinetly would notice if you werent jetted with those mods dunno alot about the supertrapp but when i had just those mods and i was running a 42 pilot and a 136 or 138 main.
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #9 ·
ok so what about the spark plugs? is the premium plug really any better than the standard plug? will i gain anything with the premium plug? im not talking about the car spark plug no more.
 

·
Premium Member
Joined
·
4,389 Posts
dunno i just always have ran the ngk-r just my personal preference. nothing special, i mean your gunna be changing them after about 5 or 6 rides anyways. or atleast i do cuz i like 2 really beat on my quad its a toy so i ride it like one. lol
 

·
Premium Member
Joined
·
6,616 Posts
No, just use whatever the manual calls for. Or at least I have never noticed a difference.
 

·
Premium Member
Joined
·
4,389 Posts
oh yeah and do you know how to do the spark plug test 2 see if your lean rich or just right?
 

·
Premium Member
Joined
·
6,616 Posts
dunno i just always have ran the ngk-r just my personal preference. nothing special, i mean your gunna be changing them after about 5 or 6 rides anyways. or atleast i do cuz i like 2 really beat on my quad its a toy so i ride it like one. lol
You change your plug every 5 or 6 rides? I have changed mine 2 times in 3 years.
 

·
Premium Member
Joined
·
6,616 Posts
Just pull your current plug and see what color it is. If it is wet and black, you are rich. If it is a nice tan color, you are correct. If it is white you are lean.

Put a fresh plug in, warm up the quad and mash it all the way into 5th gear and then kill your motor. Pull the plug and see what it looks like.
 

·
Premium Member
Joined
·
4,389 Posts
Yeah i change mine often lots of hill riding and bouncing of the rev limiter where i live. I was asking him if he knew how 2 do the plug check cuz he was saying all these mods and he dont know if its jetted i was jetted when i had those mods for sure.
 

·
Premium Member
Joined
·
6,616 Posts
Yeah i change mine often lots of hill riding and bouncing of the rev limiter where i live. I was asking him if he knew how 2 do the plug check cuz he was saying all these mods and he dont know if its jetted i was jetted when i had those mods for sure.
It is your own choice but IMO you are wasting money on that many plugs. I ride in the Rocky Mountains and I race desert races, I know all about hills and bouncing off the limiter. How do your plugs look when you pull them?
 

·
Premium Member
Joined
·
4,389 Posts
Brown like a darker brown cuz i run it alittle rich.
 

·
Premium Member
Joined
·
6,616 Posts
That is what i do too. Hell, your plugs are still good I'm sure when you are pulling them. But like I said, it is your choice.
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #19 ·
i see in the ad for the premium plugs it says better response and quicker starts? and i pulled my plug it is black and kinda wet? what should i do?
 

·
Registered
Joined
·
82 Posts
Discussion Starter · #20 ·
i see in the ad for the premium plugs it says better response and quicker starts? and i pulled my plug it is black and kinda wet? what should i do?
i should probly get new plug and try what u said cause i dont know how old this plug is?
 
1 - 20 of 35 Posts
Top