How To Get Even More Power Out Of My 440ex?

[tippmann9898]

I'm really happy with the power of my 2000 440ex right now. But

I'm the type of person that can never have too much power. I

just had it built it has about 5 hours on it since the big bore. I

want to know what I can do to get even more power out of it

without re-boring or stroking.


Here's what I have done to the motor:

Wiesco 440 Big Bore 12.5:1 piston

Hot Rod HD Crank And Connecting Rod

HD Valve Springs

Hot Cams Stage 2

450r Crab

LRD Full Exhaust

K&N Airfilter

Hinson Clutch Basket

EBC Clutches

HD Cam Chain

What will push more power out and give me more torque and

more speed. I love top speed but i don't want anything that is

going to take away torque. Any input is appreciated. Thanks

[zrpilot]

Not a lot left, I'm afraid.
Higher compression 13:1
Bigger cam requiring hard weld rockers.
Port and polish on the head
Bigger valves
New CDI
Make sure jetting is spot on.


Or get a different quad

[400exrapes]

try getting a rev box i read something like they can add a good amount of power

[oldskoolex400]

get a different quad lol

[tippmann9898]

Who makes a really good CDI? Has anyone used the dynatek ignition? Is it any good?

[oldskoolex400]

its pretty good

[BigFish]

Head work is really what u need, plus an FCR carb, or a better quad

[oldskoolex400]

Higher compression 13:1
Bigger cam requiring hard weld rockers u defff. need this
Port and polish on the head
oversized valves
New CDI
bigger oil cooler
bigger oil tank
stroke it +4mm

thats about all you can do

[250X_project]

definitely head work. Port and polish with OS valves. Along with what everyone else said as well.

Also a lightened flywheel for better rev, depending on your riding. This would work well if you were ever willing to go with the 460-500cc stroker.

And a high performance coil

[400exrider989]

put a 330r motor in it:eek2: :confused: