post you list of motor mods!!

[blakefoote]

list your motor mods...and tell how you like it...

mine is.....
406 bore
Wiseco 11:1 piston
Hotcam stage 2 cam
no choke
no airbox lid
K&N filter
HMF full exhaust...

I LOVE IT!!!!!

[Chino886]

JE Piston, Stage II Cam, Sparks Key.....Love it

Can you say stock bore.....

Getting ready for a 416 though....:devil:

[FoxRacing81]

426 Ross 11:1 piston
LA Sleeve
Hot Rod Crank
Hotcam Stage 1
Port + Polish
White Bros Rev Box
White Bros Air Filter
White Brothers Pipe

I like it. Was expecting a little more power, but I can't complain at all. It's really awesome. Have had some issues with it though, so I haven't got a chance to ride in about 3 months. So I figured what the hell and I'm redoing the whole thing...powdercoating and all...should be sweet when its done.

-Justin

[Trailrider400ex]

wiseco std. bore 11:1
heavy duty cam chain
tc racing 924 national cam
tc racing port & polish
hard face rockers & hd valve springs
sparks x-6
sparks hi-rev cdi
sparks air filter with ring
sparks ignition advance key
fcr 39mm
aluminum air box
hinson basket and pressure plate
sparks 8 plate


Awesome power.

[Rico]

powerbong header and it keeps up with 450's


:macho

[ballz2thewall]

Ummmm........ stock! The warranty thing bit me in the @ss!

[insaneracin2003]

416 je piston
C&D Racing port,polish,3 angle valve job
Kibblewhite valves
Hot Cams stage 2
Sparks x-6 full system
Uni filter no-lid
Barnett dirt digger clutch
good on power throughout range

[NCexRider]

Originally posted by Rico
powerbong header and it keeps up with 450's


:macho

:D

[underpowered]

JE 426, low comp ratio not sure on exact number
WB 1870 grind cam (All around)
Hmf slip on
Have a ported stock header, not on at the moment
K&N filter w/outerwear
No air box lid
Choke removed

Not that much but works well enough to beat my buddies

[400exbirdy]

2003 400ex

440ex
wiseco piston 11:1
milled head
bigger rockers/ valve springs
intake and exaust porting(never polish it!)
hotcam stage 3 !
hd timing chain
yoshimura stainless full
k&n filter and outerwear
no lid
white bros rev box
magic box
fcr 39 mm carb

i love it? damn yes. only prob, way to much tork now, gonna change sprokets soon. :D

[K_Fulk]

My EX motor
Custom 92mm JE piston
Aluminum nickasiled Sleeve
Bored Cases
Carrilo rod/ Falicon Balanced Crank
Ported Head with oversized intake valves
Megacycle X2 Cam
Hardend rockers, stiffer springs, ti retainers, shorter guides
Lightend flywheel
Hinson basket, inner hub, pressure plate, 8 plate clutch and Quick change cover
Cases, head and cylinder were coated with artic black, heat dissipating paint.

Motor ran strong, really strong after I took out the wb 1498 cam and put in the x2.

Never got it dynoed, but a buddy of mine is buying it and will get it done when its complete.

[zeppelin]

Originally posted by Trailrider400ex
sparks hi-rev cdi
sparks ignition advance key
Awesome power.

sorry for interupting the thread but you need to get rid of the advandce key if your runing an afetrmarket cdi

[trx400exxracer]

Hmf slip-on
Uni air filter
170 main jet
no air box lid

and yeah I keep up with the fofiddy's

I am soon going to have a yoshi comp full system

[Trailrider400ex]

Why should i get rid of the advance key with rev box. I have been running this together for about a year now and I havn't had any problems. Not trying to be smart, just want to know.

[underpowered]

Originally posted by Trailrider400ex
Why should i get rid of the advance key with rev box. I have been running this together for about a year now and I havn't had any problems. Not trying to be smart, just want to know.

the sparks key does exactly what it says, advances your timing. well the Rev box does basically the same thing, advances the timing curve as well as upping the rev limiter. if you are running both your timing is over-advanced. This will cause the bike to run hot, that is why the timing key is not recomended for built motors due to heat issues. With your settup you are probably loseing power once your bike is up to operating temps since the heat is so high unless you have it jetted rich and then is probably doesnt run its best until it is riden for a while and copletly warmed up..

[BlackTrx440ex]

wiseco big bore 440 12:5:1 compression
yoshimura full system
hott cam stage 1
k&n air filter
barnetts clutch ( never get one put it my first one wore out in 3 rides ) ( cable was too tight tho)

[2004exrider]

2004 Yeller 400EX (performance motor mods, not appearance)
- HMF slip on
- K&N air filter
- Stage 1 Hotcam
- Stock gearing
- 42 pilot jet, K165 main, Needle to soon be on the second notch from bottom
- Stock gearing
- Bandit XC 6 ply tires:mad:

Like my set up now. I had 14/39 gearing but got rid of it basically because it was just way to much bottom end, i liked it in tight trails but long stretches it was just terrible. My tires suck!!! They are pretty good in dry surfaces, but as soon as its slick they dont hook up worth crap!
Very soon to be installed...
416 11:1 wiseco piston, XR Gaskets, Port and Polish, Maybe the powerbomb header, and some 450R front shocks. The list will just go on though im sure:(

Jimmy

[luvmyex]

Originally posted by Rico
powerbong header and it keeps up with 450's


:macho

no more coffee can?:huh

[Chino]

Je 13:1 High Compression Piston on 114 octane Turbo Blue
Ported and Polished
Tc 926 Gncc Regrind
Full Hmf


don't run to shabby, she's got a lil torque ~

[trx400exxracer]

Originally posted by Chino
Je 13:1 High Compression Piston on 114 octane Turbo Blue
Ported and Polished
Tc 926 Gncc Regrind
Full Hmf


don't run to shabby, she's got a lil torque ~

I figured she would just have a tiny bit of torque

yeah right like a ton

lol:p

[Chino]

Originally posted by trx400exxracer
I figured she would just have a tiny bit of torque

yeah right like a ton

lol:p

it's not that much honestly, I have more low-end than top-end by far. Still in a straight up drage race after 3rd gear a 450 pulls away from me, it's all in the rider though.

[hawaiiansupaman]

2005 400ex

wiseco 11:1 416 kit
cometic gaskets
stage II hotcam
HMF full exhaust
curtis sparks advance timing key (removed for now) Big Gun rev box

[yfzfelix]

plus 6MM stroke, 12.5 to 1 comp Weisco, TC ported head and cam, 40MMfcr carb, lightened flywheel, haven't ran it yet still doing ground up rebuild with quad, everything is done just need to assemble, not sure about exhaust, might be PC or Yoshi or Pro Circut also MSD ign. should be an ok runner

[prepracing]

426ex
Wiseco 11:1 ( actually like 10.7:1 )
stage 1 Hotcam
Ported Head
WB rev box
HMF full exhaust
K & N filter / Aluminum airbox
Pingry oversize oil tank
Barnett Clutch

[Rico]

Originally posted by luvmyex
no more coffee can?:huh

The bearings went out in it..

Last night I added the following to my motor...:macho


Bored .080 over to 416cc
HRC cam
JE Piston 10.8:1 Compression
Hinson Clutch Basket
Cometic steel Gaskets
Sparks Racing 8 Plate Clutch w/Heavy Springs
Sparks Heavy Duty Cam Chain
Sparks Racing Modified Carb
Lightened Flywheel
GT Thunder Porting
GT Thunder CDI
GT Thunder Air Box Intake Tube
FMF Powerbong Header
Red HMF Silencer
K&N Filter w/Outerwear
Dynojets

[Trailrider400ex]

Originally posted by underpowered
the sparks key does exactly what it says, advances your timing. well the Rev box does basically the same thing, advances the timing curve as well as upping the rev limiter. if you are running both your timing is over-advanced. This will cause the bike to run hot, that is why the timing key is not recomended for built motors due to heat issues. With your settup you are probably loseing power once your bike is up to operating temps since the heat is so high unless you have it jetted rich and then is probably doesnt run its best until it is riden for a while and copletly warmed up..



Thanks for the information, I guess i'll pull the advance key and see what happens.

[Trailrider400ex]

I guess i'll pull out the advance key and give it a try. I did notice that the bike did run a little hotter.

[bones_chevyboy]

440 11:1
white brothers slip on
k&n removed air box lid
dyno jet kit
oversized intake valves,full port & polish shaved so about 11.3:1 comp race springs w/tit retainers
rev box
stage two cam
stock gearing thinking about going to 16f though

[123patrickquad]

440 12.5:1
jetted
k&n
tc racing lightened flywheel with 8 oz shaved off
por. and pol.
hmf shorty
cfm oil tank
and more.....

[crazyatvn]

Powroll Lid
K&N Filter
Port & Polished head
HRC Cam
HD cam Chain
440 Stroker w/ heavy duty rod
Auxilary oil cooler
Complete Hindson clutch (inner, outer, and Basket)
WB Full system

[oldskoolex400]

hey i have a 406 now jw what yall thought i should do to it i mostly trail ride with drag and some flat track would u go with 416 stock compression or 11:1 or what i dont really want anything over 11:1 and would u change the cam out i also have to replace the valve seals so would u put titanium springs or what
thanks

[spent21]

a real racer never reveals what he's got under the hood:D
i've seen the advance keys for sale. how do you guys like them? do they work well with say a stage 2 cam?

400exbirdie,
why would you "never polish" a head? true you don't polish the intake, but why not the exhaust?

[wrighty]

i have a 99' 440 ex

440 wiseco big bore kit 12:5-1
hotcams stage 2 cam
ported & polished head
edelbrock carb.
k&n filter
pro-circuit t-4 full exhaust
kibblewhite valvesprings & retainers
srp cdi rev box
14/38 gearing
sunstar sprockets


and it is fassssssssssst!!!! it is a whole bunch of difference from the stock machine.

02 400ex

stock

soon to come...

hfm slip-on
AC pro pegs nerf bars
AC bumper



and soem other stuff

[whiteflash]

o4' 400ex
DG Excellerator slipon
K&N Filter/ no lid
Hotcam Stage 2
WB revbox
14t sprocket

quite a bit of torque....i guess i like it.

What should i get next? i was thinking a high comp stock bore piston...

[m1ke]

hybrid 400cc cummins, turbo charged.

[400exbirdy]

Originally posted by spent21
a real racer never reveals what he's got under the hood:D
i've seen the advance keys for sale. how do you guys like them? do they work well with say a stage 2 cam?

400exbirdie,
why would you "never polish" a head? true you don't polish the intake, but why not the exhaust?
i was just talking about the intake......annyway:cool:

besides motor work,am i the only one with the canadian shocks called stadium here ??:ermm:all i see is elka,axis and pep on this site