I need to know sonn 416, 426, or 440?? HELP

[03400EX_Nacs]

i am fixing to be sending my 400 off to get some engine work done for a Christmas present and i need to choose and get the specifications down on what to ask for.. I do ALOT of woods riding and am planning on starting to race a little. i would like to have more speed with a littlee more power while i am going fast, yet i want more power for going slow too for the trails... i think i was planning on going with a 11:1 compression? so that i didnt run race fuel and i was gonna do a stroker motor on a 426 or 426 and i heard that you couldnt put a stroker on a 426 and if you put one on a 416 then it would turn out to pretty much be a 440.. and i would rather go with a 426 or 440 but i think i need the stroker motor to help with reliblitiy and i was gonna get the heads ported so do i really need the stroker? by the way i sound which one does it sound like i need?? any help comments appreciated....

[markeg192]

I went from a 416 to a 440 and slowed down a bit. This is going by times running the dragstrip. I'm sure a 440 is faster but harder to setup.

[03400EX_Nacs]

did you like your 416? why did you go to a 440? and downfalls?

[quadmxracer]

I am currently running a 416 11:1 setup and I love it. I also ported and polished my head and put in a WB Track cam. But I like the combination of the track cam and 416 because for me I wanted more bottom end and mid-range for MX. I gained more low end and mid-range and the top end is about the same maybe a little faster. I hope this helps.

[pnut420]

I went with a 426, the downside is when you need to rebore the 426 you have to resleeve and go to the a 440 or go back to 426. If you go 416 you can still go to a 426. If you are on a budget then go 416 or 426 with stage 1 hotcam or XR cam, 11:1 compression and porting the heads makes throttle response awesome and gives more power.... Then get a 39MM FCR cause that helped alot and Sparks exhuast topped it off for now :D

[markeg192]

I blew a head gasket and needed it for the weekend and all I could get was the 440. I think the 440 runs hotter and whichever you do be sure to have bigger headbolts installed.

[bmw500hp]

I really depends on just how good Santa was to you. Well heck if he left you 2700.00 and you are dead set on spending it ALL engine work then simply go for broke...a stroker would be no doubt a killer motor.

The real question here is "where is the suspension". Unless you are superman, a perfectly built woods 440 is going to have it's problems against a a modest 416 and full Roll Lobo in the woods.

A full set of Axis, antivibe and stabilizer with a modest 416/woods setup would be money well budgeted. :cool:

[03400EX_Nacs]

so your saying that a pimped out 416 would be better than a 440 on the trails?

[Smokin 440]

The 416 w/ suspension would probably be more fun than a 440, but i really dont know the price difference between the 416 & 440... as for reliability i had no problems with my 440 i put loads and loads of hours on with absolutely no problems... good luck...

[03400EX_Nacs]

if i could go with a 416 and it be cheap but pimp it out i would like that more

[cals400ex]

Originally posted by markeg192
I went from a 416 to a 440 and slowed down a bit. This is going by times running the dragstrip. I'm sure a 440 is faster but harder to setup.


the 440 honestly slowed you down?? i am considering going up to a 426 from my 406 because i was told there was be a really nice power increase. i plan on staying with the same compression piston.
did you change your jetting at all after the swap?
what compression were both the 416 and 440?
what brand of piston did you use in both?

[RED121572]

I wanted to be able to climb straight up a tree if I wanted to, so I went with the mods to my 400 listed below.

Good luck!!

RED

[RED121572]

Originally posted by cals400ex
the 440 honestly slowed you down?? i am considering going up to a 426 from my 406 because i was told there was be a really nice power increase. i plan on staying with the same compression piston.
did you change your jetting at all after the swap?
what compression were both the 416 and 440?
what brand of piston did you use in both?

Went from a 11.1 406 to my current 435. My 435 pulls so much harder.

RED

[03400EX_Nacs]

so would it be kool to go with a 440 11:1 compression, with a stroker, stage two cam, heads ported, and probly a new carb?? would that be a good set up?

[Dave400ex]

If you run a stroker more then likely you would be running a 426 piston with the stroker crank to get you up to a 463/465.

I would just get a JE 416 Piston, nice Cam, have the Head Ported/Polished and Valve Job, then if you want to get a good boost, go with the FCR Carb. Sooner or later then you will need different Clutch Plates.

[03400EX_Nacs]

hmm i would like to go with a 416 and do some extra stuff but what worries me is my dad said this it is i cant go back and get it bigger we have to get it right his time.... so i need to make sure i get the right amount of power and torque everything....

[Dave400ex]

Go with the FDO 463 Stroker then!

[03400EX_Nacs]

what would be the realiablity of 0f the 463?? if it is gonna be blowing crap left and right i dont want to do that....

[Smokin 440]

A 463 would be like a 440 with alot more torque, and if you mate it with a mid to hot cam you should have very broad power, the reliabilty should be decent, just make sure you change oil, and do other maintainance more frequently. My 440 has been very reliable even if i neglected it a little, the only thing with the 463 is your going to want an fcr carb, and a heavier clutch... good luck

[Dave400ex]

I still think you would be best off with a 416. A 416 built right will have plenty of power.

[WhiteBros400ex]

I say go with the 416 because it is really reliable and a good built 416 can beat a 440 and its mroe unreliable. but i say 416 they have some good power if they get built right. only go with the 426 or 440 if u have to like if you blew it up and need it bored but if you dont then dont go ne higher then a 416.

[Smokin 440]

I'd put my 440s against a 416 any day, u can't tell me that if u'd do the exact same things to both motors that the 416 would have more power or be faster

[WhiteBros400ex]

No i am saying if u build ur 416 good it can beat a 440 if its not built right but if both motors r built right the 440 will def beat it.

[Steven]

My 440 has been very reliable. I've been running it hard for years now with ZERO problems!

Only anoyance is that it runs hot when you just put around. Stick to about 10.5:1 with a 440 and you shouldn't have the heat.

Mine has been soooooo reliable with the Ross piston, Hotcams cam, and LA sleeve.

Get a Sparks clutch and run Mobil1 20w50.

This has all worked very well for me.

If you want to save money get a 416. Don't expect HUGE power gains though.

Steve

[Glamis400ex]

My 416, with head porting is a very good bang for the buck. So much more power and I still have an overbore...(426). I'm very happy with the outcome. Everyone that rides my quad says they notice a considerable increase in power.

Once you hit about the middle of 2nd gear...hold on, she really comes alive.

Glamis

[stamperbob]

I like my 416 with a xr cam and a fcr39mm carb with ct pipe, but if you are just trail riding your bike i would say just either rebore to next size on your cylinder and then go with 11:1 comp piston, that way you don't use up your bores, when you go to rebuild your motor the next time, also if you are looking for wood power i would go with either a stage 1 hot cam or xr cam and either bore out your stock carb or go with an fcr to bring the power to life, to get a little more compression you can either use rtv for you base gasket and or a xr 400 head gasket which has a thinner clearance than the 400ex head gasket, this will give you plenty of power in a woods bike and a port and polish job doesent hurt at all.

[WhiteBros400ex]

Did you decide which one you are going to go with i hope you picked the 416 cuz you wills till have a over bore then u can always resleve it with the 440, let us know:)

[03400EX_Nacs]

i talked to my dad and he read these posts and after that he thinks that it might be a better idea to just go with the 416... thats what i wanna do but i dunno if i can get anymore aftermarket stuff (skock, a-arms, etc.) but i hope all goes over well thanks for ALL the help if you anymore ideas pls update

[Glamis400ex]

You won't be sorry. I was surprised at the power increase and I'm a big guy at 6 ft. 225 pounds. It hauls my big *** around no prob.

Glamis

[hondaexryda]

Is 426 a good bore kit ??? 416 or 426 ??

[Glamis400ex]

sigh...:rolleyes: Read this WHOLE thread before you ask. We just went over the whole thing.....2 pages long



Glamis

[03400EX_Nacs]

lol Glamis.... but i hope i can get some aftermarket stuff shocks are exspensive though

[Glamis400ex]

LOL....drives me friggin' batty. 2 pages long of discussion about different bore sizes, some really excellent info, and then..."Hey is a 416 or 426 a good bore kit?":huh :huh :huh Damm kids are to lazy to do a search...

Glamis

[03400EX_Nacs]

i never could get the sear thing to work for me it looks like and abc 123 thing but i dunno :mad: