416 or 426

[sickyellow400ex]

where is the best place to buy a ross or je 416 or 426 kit, also wich is better for trail riding

[UglyMotha™]

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truthfully there is verry little differance between the two either one will work out great personally i would go with the 416 then you can go to 426 if you ever need to go a bore larger

[Steve-o 400EX]

Originally posted by UglyMotha™
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truthfully there is verry little differance between the two either one will work out great personally i would go with the 416 then you can go to 426 if you ever need to go a bore larger

I agree 100%. I am in the process of putting my ex motor back together after a 416. I got a JE just because they were out of ross pistons at c&d racing. I cant wait to ride it. The 426 does not have much power over the 416 unless you go the whole 9 yards and get a carb, port and polish, cdi box and new valve springs. I am doing all of these things anyways but it would recommend the 416.

416. i think the 425 builds up to much heat unless u have a larger oil cooler or other things to keep the temps down.

[quader400]

does the 440 build up heat like the 426? and if i got a 440 with a 39mm carb , valve springs, and thats it would it be fine or what else would i need to make it run to its fullest. oh and a port and polish job.

[Baley69]

What about a bike that is used at the dunes more than anything?

[Steve-o 400EX]

the 440 will build more heat than a 426. But with a 440 you also should do the crank, connecting rod, cam, new sleeve, clutch, oil cooler, valves and there is probably a few things i missed. If you dont do these things youll have 416's blowing bye ya all day.

[Chanman420q]

the 426 would be better for trail riding, only because its a heavier pistion, which creates more tourge, which means better bottom end.

the 416 is a good bore to run at. Because its a lighter pistion it will rev higher and give you good top end.

I want the 426, but im going to go to a 416 so if i ever blow my top end, i dont need to resleave right away.

As far as cooling, do the basics, run as high as octane as u can afford and run air scoops. For the 416 and 426 just to be safe id get an oversized oil tank. And if you decide to go 440, id definitly get the tank and another oil cooler.

[QuadTrix6]

Originally posted by quader400
does the 440 build up heat like the 426?


Im not sure abt that. I know the 426 builds heat because thats the furthest you can bore on the stock sleeve and it makes it very thin so it wont cool off *** quick and the 440 has a new sleeve so it shouldnt have that problem.

[RideRed400StYlE]

Just for everyone who is wondering. I have a 426 13:1 comp JE and I have no problems with heat. the power and torque this thing has is unreal. I also had the flywheel shaved while it was apart and I put in a cam and ported my head along with an FCR 39mm running on 110 race fuel. I installed a carrillo rod and had the crank trued and welded. I can ride this thing fast or slow and it doesnt heat up. thats without my scoops on, and stock oil cooler. I am going to get another oil cooler to add to it, but as far as heat goes I dont have a problem. I havent lined up against a 416 yet, but me and my buddy are in the process of building his.
so I will let everyone know how it compares then. I am still using stock valve springs, and stock cdi. The bike makes all of its power at around 4-5000 RPMs so there is really no reason at all to have an extra 1000rpms I think your just looking for trouble with the rev box. My only problem with the 426 is that the front end wants to come off the ground in every gear :rolleyes:

[Steve-o 400EX]

Hey RideRed400StYlE, do you have any suspension mods?? I rode YZROOSTINYA's 416 the other day and it really rips but he has front and rear shocks and they keep his front end on the ground no matter how hard you get on it, unless you want the front end to come up, hehe.

[Glamis400ex]

I rode my new 416 today for the 1st time....it rips around pretty good, I did porting and all that also...

Glamis

[Porkchop]

I want a 416 kit now :D

What all supplies do I need and how much would it cost? Do 416's run pretty good in the dunes? My problem now is that I bog alot and want something that will keep the revs up.

[RideRed400StYlE]

Originally posted by Steve-o 400EX
Hey RideRed400StYlE, do you have any suspension mods?? I rode YZROOSTINYA's 416 the other day and it really rips but he has front and rear shocks and they keep his front end on the ground no matter how hard you get on it, unless you want the front end to come up, hehe.

Yeah, I run elka long travel up front and an elka rebuild in the rear.

[YZROOSTINYA]

it stills come up, but the suspension helps to float the front as oppsed to straight wheelie and having to let off the gas.

there are still plenty of times when it shoots up, thats when the tires aren't busting lose though:devil:

[Natertot426ex]

I like my 426 a lot. Lots of power gain and runs great without any problems. beating 440's. I have had it in for a year now and still running strong. For a complete list of mods look at my sig.

[Steve-o 400EX]

Originally posted by Porkchop
I want a 416 kit now :D

What all supplies do I need and how much would it cost? Do 416's run pretty good in the dunes? My problem now is that I bog alot and want something that will keep the revs up.

You'll need a piston kit, i recommend JE or Ross. A cam, i recommend a hotcams stage II, oil, oil filters, spark plugs, jets, gaskets, air scoops, and the cost for getting the cam pressed and the cylinder bored. Mine cost about 600 when all was said and done. But it was well worth it and it has plenty of power.

I'm still breakin her in, I got about 3 hours on it now. And so far all is goin great. I am ordering air scoops to help keep it cooler. I started mixing race gas and premium and i could feel a difference in tempature cuz i was riding in shorts. But i'll keep y9ou guys posted throughout the breakin.

[Castor-426ex]

i also love my 426....from 1st gear through 3rd anytime you punch the throttle youll see God....i have never had a tether kill switch


now i do....

[whitebrothers]

I cant afford the new 450 yet and i have the pro meg r4 so i want a 416 kit i need help

[northeast400]

I love my 426, the only thing I question is the rod. some people said change it. some say it is fine.

[whitebrothers]

i love my 400ex and it has power but not enough i plan on putting a hot cam stage 1 a je 416 and a larger oil tank for cooling purposes i need to see just about how much it will cost and how much work i will have to put into it

another thing is to all you who have a 416, does your quad run hot and is it reliable


Thank you

[Natertot426ex]

I have my 426 in for a year and a half now and it runs strong. No need to replace the rod. Mine does get a little hot in the summer when it is about 90 degrees or hotter but Not hot enough to totally kill it.

[northeast400]

Mine seems fine so far. cost for me was easy i run an auotmotive performance shop. (no labor costs). parts cost me about $400. I would call C&D to get the parts prices. the tuning and advise from robbs atv next door, not to go off the subject but his son won the race this weekend and he is on main page of exriders just click the link.

[whitebrothers]

I plan on calling c&d today and asking for prices thanks what octain do you run your quads at also and does you quad haul give me some examples of how fast your things are.
thanks

[set2crash67]

how much is the 426.....everything and to get it bord out. i dont need exact #s but some where close. i use regular 87 in my quad will 97 or what ever the highest octane at the gas station is help that much?

[Natertot426ex]

Originally posted by set2crash67
how much is the 426.....everything and to get it bord out. i dont need exact #s but some where close. i use regular 87 in my quad will 97 or what ever the highest octane at the gas station is help that much?

Piston cost me 150, bore was 75 and cam was 140. I run the top stuff at the pump. Runs just fine.

[tryken]

bump

[torqen2k1]

Go for the 426 or the 416. Both are realy good setups. I have a 426 with a stg 2 came ported head and 3anle valve job. And cold not tell you that it generates alot of heat because I just had it finshed last week. But ive been running straight 100 octane. just make sure you jet properly. i run straight 100 octane and air scoops also mobile 1 red cap. but in the summer im gona get a bigger oil cooler and oil tank just to be on the safe side.

[cals400ex]

i wouldn't go 426 unless your going to resleeve it. just my opinion though. both are good. i have a 426 while my buddy runs a 416. the 416 seems simplier since you don't have to worry about resleeveing it. i know the stock sleeve will accept up to a 426 but i don't recommend it.

[Steve-o 400EX]

Originally posted by cals400ex
i wouldn't go 426 unless your going to resleeve it. just my opinion though. both are good. i have a 426 while my buddy runs a 416. the 416 seems simplier since you don't have to worry about resleeveing it. i know the stock sleeve will accept up to a 426 but i don't recommend it.

I agree.