almighty 350x vs thy less mighty 400ex

11-12-2002, 01:56 PM

oh trust me had it been a "race" you never would have seen me once i passed your trailprotrailprotrailprotrailprotrailpro :shock:

**MR ATC** · 11-12-2002, 02:03 PM

SO when are you and O.S. coming out this way to redeme yourselves? i'm getting sick of beating these guys around here that all heve brand new Raptor's ,Z400'S (both yellow and green) these are the same guys that sold there 400ex's cause they could not keep up....lol
i've got some trails that the beginners use so your Raptor won't have "traction" problems on baby hills

**karnivore660r** · 11-12-2002, 02:03 PM

Anybody have any footage of a stock 350x beating a piped and jetted 400ex? or should I say "spanking" a 400ex?

I'd like to see 1 race O.S.'s ex, he definitley has it tuned right.

**MR ATC** · 11-12-2002, 02:44 PM

ok lets look at reality here, the fact that were even having this discussion gives the 350X the victory. the 350X is 17yrs old and still competitive with the 400ex its really a 50/50 toss up both can win its so close. its a matter of the better rider however, the 400ex guys must admitt there machines are newer and in better condition then most of the 350X's there racing against. now 17yrs from now will they be comparing the 400ex to the newest mid sized 4 stroke ATV?. no because its already getting beaten by Z400's. LONG LIVE the 350X King of the Hill

p.s. i'll put money on me beating O.S. in a rematch

**karnivore660r** · 11-12-2002, 02:56 PM

I don't age has anything to do with it and it definitley doesn't make it the automatic winner. What kind of reasoning is that?

I'm sure we may be comparing the 400ex to a newer machine in 17 years if they ban atv's and we have to wait another 15 years for a new high-per machine.

**MR ATC** · 11-12-2002, 03:05 PM

quads were never Banned. what about the Yamaha Warrior? that is a 350 4 stroke. its was supposed to be faster then the 350X after all it won the shootout in dumb wheels.

try too keep up...age has everything to do with it the 350X is still state of the art compared to a 400ex it has 50cc less but puts out almost the same #'s. the fact that 17yrs later its being compared to a "new" quad speaks volumes about its abilities. how many other 17yr old Bikes,trikes,quads are still competetive in there respective class's? now imagine if a 17 year old trike is being compared to a new quad what would happen if we had a brand new 350X...HMMMMMMMMMM

**350Xrider** · 11-12-2002, 05:52 PM

The 350X lush is talking about was mine and when the 400ex I was racing was stock I beat him by about 20ft or more with my SO CALLED LEANED OUT BIKE. I can still beat him to and he has an E-series pipe and jetkit.And since you think that horsepower is so easily gained it has a six pack rack and Renthal bars,so that must add an additional 5 horses.lol I'm not going to say much to u Karni if you are lost so bad as to say that age has nothing to do with it. Also I bought a new set of Scott Hand Grips what kind of jetting do you think I should run. LOL. I need to find the article that says all about jetting and how it is not necessary like you think it is. I know you would believe it, because it came out of dirtwheels and you aparently are one of those that believe anything they read or hear. I am just going to have to go and flat out disagree with O.S. on the fact that I am completely for my own reasons, and those of you who know their stuff enough will know what I am talking about.

**karnivore660r** · 11-12-2002, 06:33 PM

There is no since in posting anymore since some of you can't understand english. Re-read my posts and think about what your saying, I hate repeating myself, even for the challenged.

**OldSchoolin86** · 11-12-2002, 07:07 PM

For the Record:
Okay lets set the record strait here. Trash talk aside the three of us(MR ATC, Karnivore, OS) kicked some trailprotrailprotrailprotrailprotrailpro out on that hair scramble. MR ATC you can definantly hang with us without a question. If we were leading I highly doubt we would have lost you. You know how to ride. Each machine has it's ups and downs. All of our machines showed them from time to time out there but I wouldn't say anyone was holding anyone back. Well maybe that 660 was an anchor. lol

350Xrider:
Your still wrong and that's too bad because your missing out on a little more power. Ask any of the good jetters here like me and they'll tell you the same thing. I think jetting would be a good topic in it's own right for the open forum so everyone could get in on it. I'll keep an eye out for it.

**MR ATC** · 11-12-2002, 07:39 PM

i have to agree for all the times i stopped to waite there were as many times i was holding them up a little it all depended on the conditions and my own conditioning (that was the first time i rode in a year) regardless i had a great time riding with them and would do it again in a heartbeat and hope to soon. the cool thing is we had all three machines a Raptor,400EX, and 350X and no one was at a disadvantage. i know i surprised O.S. with what a 350X could do and he surprised me by being the first 400ex guy to push me and keep me on my toes. that 660 guy though he's a differant story...lol...jk Karni

i also have to agree on proper jetting. a properly jetted carb is the differance between a good running motor and a great running motor...i just don't need a kit to properly jet a motor

**karnivore660r** · 11-12-2002, 08:24 PM

O.S. LOL! I know it must look like were really going at it but we all know what's the real deal.

I don't think I have been clear as I am obviously misunderstood. So to set the record straight:

I NEVER bashed the 350x, I said it WOULD be a good race, I just don't think it would "smoke" a piped & jetted 400ex. I know some of you won't like this but I liked the 350x so much I put a crate (no 350x was dismantled) one in my 250x frame and I'm sure it could hang with a stock 400ex in the quad frame!

I NEVER said that you could NOT jet properly without a jet kit and in fact stated I was going to do that before I went with the GYT-R jet kit and I mainly did that because I could not get the right jets alone.

I said that a 350x does not win JUST because it's 15 years older as MR ATC stated.

cappiche?

**OldSchoolin86** · 11-12-2002, 08:33 PM

LOL! That was for everyone not just you Karni.

**350Xrider** · 11-14-2002, 12:31 AM

You can say what you want about jetting I am telling you about me not having nor needing to change the jetting, it all depends on your altitudes and such. It is not necessary to rejet with just a pipe and filter and is in no way damaging your bike as Karni suggested earlier, so you all can say what you want but it isn't hurting the longevity of my bike,that is why it has been running strong and trouble free since 86.Some of you all depending on where you live may need to rejet to achieve maximum h.p. for mods such as a pipe and filter. I however do not. So how challenged do you think that is Karni. I believe what we have here is a case of the know it alls.

**Lots_Of_Nothing** · 11-14-2002, 12:44 AM

this is a little back in this forum...but a jet around here only cost $1.25 no matter what its for or what size..........

**karnivore660r** · 11-14-2002, 01:49 AM

Wow! trouble free since 86! That's 15 years! you must have got one of those bikes that was built in mid-week.

Well for as long as I have known, running way lean does hurt your bike and performance. The engine runs hotter, running hot equals poor performance. That's why they put things like fins on air cooled motors and run coolant in liquid cooled motors. The cooler an engine performs the closer the tolerance can be and the more performance you can get out of it. Secondly, when you increase air flow into a motor's combustion chamber you lose out on possible performance gains the motor can put out if you don't increase the fuel.

The reason elevation is another factor is because at lower altitudes air pressure is greater and has more force, at higher altitudes air pressure decreases. The higher the altitude the less air is push into the carb/combustion chamber. The lower the altitude the more air that is pushed into the carb/combustion chamber. I have provided the following chart for you:

Air pressure at different altitudes

Altitude(m) - Air pressure(kPa)

sea level - 100

3000 - 70

6000 - 47.5

9000 - 32.5

So by what you said, you either started rich or you live on the moon.

I don't think I know it all but I think N.A.S.A. is pretty smart, here is a link to an interesting test result I found. It's a little old but it still rings true. Pay close attention to page 3.

http://naca.larc.nasa.gov/reports/1937/naca-tn-619/

Even air temperature has a noticable effect on an engines performance. More air desity in colder climates and thinner air in warmer temps. Resulting in the engine running a little leaner in cold weather and richer in warmer climates.

I will give you this though, an engine runs at peak performance when it's running a little lean but when running at the utmost peak performance you are affecting the longevity of your motor. Any leaner and the bike starts to not perform well. I like to jet at/for around 60 degrees, a little lean in the winter (I don't do a lot of riding) and a little rich in the hot summer months (a little less performance but the engine will run cooler and last longer).

Increasing the air flow/supply and fuel for more power is also the reason that turbo charged vehicles put out more horse power than naturally aspirated motors. But that's getting a little of subject. OK I'll stop now.

Point being, when ever you increase air you should increase fuel for more performance and reliability.

The needles in those jet-kit scams helps mix them together. The more aggresive the taper of the needle the more emulsified (sp?) the fuel is and atomizes with the air, kind like a garden hose nozzle I guess (a finer spray).

Thread: almighty 350x vs thy less mighty 400ex

Thread Tools

...

...

...

...

...