can a 465ex run wit a 450r

[bigH]

could a 465ex run with a stock 450r?????

[Wheelie]

My 440 Stroker has no problem hanging w/lightly modded 450's. I'm still running the stock carb and stock headpipe w/an e-series slip-on.

My buddy has an 05' R w/full exhaust, Filter, modded lid, and 1 tooth down on the front sprocket. My quad is faster in a drag race and on top speed. We've raced several times, on dirt and sand, the results are the same.

Can't wait until I get a carb and full exhaust.:macho

[bigH]

rele thats kool man but is ur bike still reliable n everything.....so it makes a huge differnece once u bore it???

[Wheelie]

So far it's been as reliable as a stocker.

FYI--Mine is not a Big Bore. It's a bore and stroke combo.

Check out www.powroll.com. Check out thier 440 stroker kit.

Stock--85mm borex70mm stroke

Mine--87mm borex74mm stroke.

[okbeast]

Aren't the 440 strokers basically a 416 with a 4mil bore?

The 4mil bore is what gives you TONS more torque.

[Wheelie]

You are correct on both statements.

[300ex mxracer]

465 would blow away a 450r

[bigH]

but if i get the 465ex bigbore kit what all would i need 2 change round?????

[PismoLocal]

Your going to have to get a whole mess of parts to build a reliable 465 stroker.

To start out you should get an HD timing chain, HD studs, HD clutch kit, and a bigger oil tank.

If I was going to build a 465 I would get an aftermartket carb, hinson clutch basket, full exhaust system, stroker cam, aftermarket cdi, air shrouds and everything mentioned earlier.

I really don't know much about stroker motors though ask wilkin250r or GPracer they seem to be pretty knowledgeable about 400ex motors.

[400exrules]

cant forget a HD rod

[PismoLocal]

Originally posted by 400exrules
cant forget a HD rod

Oh ya that too you wouldn't want to spend around a couple of g's on a 465 stroker kit and motor parts just to have your rod snap and destroy your motor a couple months after your build.

[bigH]

Originally posted by PismoLocal
Oh ya that too you wouldn't want to spend around a couple of g's on a 465 stroker kit and motor parts just to have your rod snap and destroy your motor a couple months after your build.

yeah i don't wanna change that much....hb a 440ex how would that b??????? btw thanks 4 the help

[PismoLocal]

I have a 440 and I did an 11:1 wiseco 440 kit, hd studs, hd cam chain, stage 2 hotcam, and I'm going with a 450r carb. I already have an aftermarket exhaust and air shrouds too.

What parts do you already have on your bike?

[bigH]

Originally posted by PismoLocal
I have a 440 and I did an 11:1 wiseco 440 kit, hd studs, hd cam chain, stage 2 hotcam, and I'm going with a 450r carb. I already have an aftermarket exhaust and air shrouds too.

What parts do you already have on your bike?

i have a duncan fatboy 4 full exhaust system, its rejetted 2, hot cam stage 1, and a UNI air filter.....so what all should i change round when i buy the 440 big bore kit.....n does it make a huge difference in performance????

[CHEVYZ]

Most 400EXs built correctly should be able to run with and beat 450rs with some mods, regardless of bore, it is the work inside and how you set it up. Whatever you do, don't just rely on the bore to take you there and you should do well. To be honest, ALOT of power comes from other places like headwork. I would advise you to choose what you are gonna do wisely and then make a decision.

[bayou boy]

psssssh a 416 can....one of many victims a brand new 06'...lol a 450 is not invincible

[CHEVYZ]

Can you say bye bye LOL.

[400exrules]

yah, everyone thinks the 450's are so incredible...but a 416 that wasnt built by a blind retard, will rape a stock 450 in a drag...even a piped 450

[bigH]

Originally posted by bayou boy
psssssh a 416 can....one of many victims a brand new 06'...lol a 450 is not invincible

yeah thats what i wanna c lol i am sick of the 450r's kickn everyones *** lol i love the bike but my dad is so cocky n i need 2 get the right mods 2 beat him lol we ride on 90acres which is our land with 4 mx tracks, trails, long straight aways, n jumps lol if ne 1 wants 2 come down n beat him lol since he is still unbeaten with ltr 450's, yfz 450, predators, n 250r's, n banshee lol someone has got 2 beat him so we livw in MD if ur close 2 the area lemme no

[PismoLocal]

If you went to a 440 (which I'm not saying you should) I would personally get HD head studs and a CRF cam chain. the cam chain is only like $35 and is way thicker than the stock one. It won't strech as easy as a stocker, if the cam chain stretches your motor will be out of time. The studs will keep you from blowing head gaskets which is a pretty commom problem with 440's. I know there are people that run 440's with stock cam chains and no HD studs and swear you dont need em but I only like having to do things once and I'm not much of a gambling man either.

I am by no means an authority on 400ex motors, I know very little compared to a lot of members on here. You should take your time and do a lot of research before you commit to a certain motor setup. The search button is your friend when your looking into to different motor setups, don't be afraid to use it.:D

Imho a 440 is a great set up though it makes a ton of low end grunt and pulls from bottom to top nicely. I have beat a couple of stock 450's dragging before but I know that there are 416s and 426's that would smoke me any day of the week. What ever you do though I recommend not to cheap out and neglect parts that are purely for reliability because stock motor components are made for stock motors.

[bigH]

Originally posted by PismoLocal
If you went to a 440 (which I'm not saying you should) I would personally get HD head studs and a CRF cam chain. the cam chain is only like $35 and is way thicker than the stock one. It won't strech as easy as a stocker, if the cam chain stretches your motor will be out of time. The studs will keep you from blowing head gaskets which is a pretty commom problem with 440's. I know there are people that run 440's with stock cam chains and no HD studs and swear you dont need em but I only like having to do things once and I'm not much of a gambling man either.

I am by no means an authority on 400ex motors, I know very little compared to a lot of members on here. You should take your time and do a lot of research before you commit to a certain motor setup. The search button is your friend when your looking into to different motor setups, don't be afraid to use it.:D

Imho a 440 is a great set up though it makes a ton of low end grunt and pulls from bottom to top nicely. I have beat a couple of stock 450's dragging before but I know that there are 416s and 426's that would smoke me any day of the week. What ever you do though I recommend not to cheap out and neglect parts that are purely for reliability because stock motor components are made for stock motors.

hey bud thanks 4 the help i am prolly gonna go wit the 440 once i reasearch it a lil more but u have been a big help i was juss gonna rush in2 this n get bore it right away but now i am gonna think bout it......2 bad ur on the west coast or u could come down n ride with us

[PismoLocal]

Originally posted by bigH
hey bud thanks 4 the help i am prolly gonna go wit the 440 once i reasearch it a lil more but u have been a big help i was juss gonna rush in2 this n get bore it right away but now i am gonna think bout it......2 bad ur on the west coast or u could come down n ride with us

Thanks its nice to know I helped out.

[GPracer2500]

Originally posted by 400exrules
yah, everyone thinks the 450's are so incredible...but a 416 that wasnt built by a blind retard, will rape a stock 450 in a drag...even a piped 450

That's grossly overstated.

[bayou boy]

i know a really built 450 will whip me but stock or piped ones are no problem. i like playing the role of underdog...if u lose no biggie u are supposed to but when u are steady laying smack down on em...that is priceless. just research your parts carefully....hours of research is worth the effort. i just hit on a combo that really works good.

[wilkin250r]

If you REALLY want to make sure to beat a 450, you have to be prepared to throw money at it.

I haven't worked on any of the new 400EXs, but I know the first years had a deck-height issue, so a 12:1 compression piston actually came out to be about 10.5:1. As far as I know, none of the aftermarket piston companies corrected the issue. If you wanted a correct deck height and squish band, you needed to send your motor to a proper engine builder that used custom pistons (I know Mickey Dunlap used a custom piston on his 440 kits, and I think Laz at GT Thunder uses custom pistons in many of his builds).

At the same time, the porting on the 400EX really needs to be opened up to achieve good power in the higher revs, and oversized intake valves don't hurt, either. The stock porting was designed as a mid-range trail machine. It doesn't work well at high revs, and REALLY doesn't work well when you start increasing the displacement and moving more air.

[brandon34r]

my well built 426ex smoked my pipe and jetted 450r when i first got it too!