Power User
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Lets see who has some 400ex's and what kinds of mods you got. Heres mine!2003 400ex Maxxis razor2,Big Gun full System,Aluminum Wheels(unsure of brand),DG bumber and nerfs,open UNI filter,Set of the crappiest Moose racing bars ive seen!( hey they was $18 and I wanted to ride after I snapped my renthals jumping up a hill)
Last edited by swampthang; 09-13-2010 at 10:43 AM.
"I'm Kind Of Like The Turtle Man Of 3Wheelers."
1986 Honda 350X
1985 Honda 250R
1985 Honda 200X
Power User
Roostin Away
Here atr 2 pics of my half a 400ex
JASON LISKEY
1985 atc 250r ---- finsh line axle,.fmf exhaust and rictor privateer silencer, prm grab bar.
2008 KTM 525xc quad ----- HMF exhaust, HRE chromoly stem,
86 trx 250r --- with after market chromoly frame and everything else done to it
01 400ex --- with 86 trx 250r motor
87 250x + 93 300ex both 350x powered
2 = 86 atc 350x's
86 atc 250r
83 atc 185s --- from retired guy not ridden since 87
Bandito framed 110 with 85 motor and yellow us90 fenders + tank
Power User
Roostin Away
Before i sold it....
11:1 numara piston
stage 2 hot cam camshaft
full Bill's Pipe
Choke removed for better air flow
maxxis razr tires on rear
Mildly ported and Polished
she ran with the big dogs pretty well in a drag race (beat majority of stuff to 300 feet, it always had the holeshot)
Got The Holeshot
Arm chair racerJust too addicted
the red one is mine and the black one is a friends.
Power User
Roostin Away
Nice rides boys. looking to join the 400EX club soon .
Just Too Addicted
Arm chair racerJust too addicted
My yellow '02...Had to sell to buy a truck
TRIKES:
1985 Yamaha YTM 225 DR Special Edition
Dirt Bikes:
2006 Honda CRF 250R
SLEDS:
2001 Ski Doo MXZ 600
1997 Ski Doo MXZ 583
Registered User
New to the board
2002 400ex
Roostin' Away
Arm chair racerRoostin Away
I have a 2002 400EX, it was in amazing condition when I got it (no scratches or damage and still had the factory paint marks on all the bolts!) I got it for $1800....
Now it has: ITP Holeshot SR's, CNC steering Stabilizer, Brand new take off 450R Shocks, Pro-Armor Tether Kill Switch, AC Nerf Bars, 450R Pegs, AC Heel kick ups and a Pro Taper Bar Pad.
1985 Honda 200x
1986 Honda TRX350D - Gone but not forgotten 1982 Honda 185s*sold* 1985 200x*sold* 1983 200x*sold* 1985 ATC70*sold* 2002 Honda 400EX*sold*
Roostin' Away
Arm chair racerRoostin Away
Right now I want to get some new front tires, new handlebars (I want a higher bar), new bumper, exhaust, uni filter and remove the airbox lid with a re-jet. If you guys have any suggestions on any of that stuff let me know!
1985 Honda 200x
1986 Honda TRX350D - Gone but not forgotten 1982 Honda 185s*sold* 1985 200x*sold* 1983 200x*sold* 1985 ATC70*sold* 2002 Honda 400EX*sold*
Power User
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Well I have the Big Gun full system on mine with the open UNI and jet kit. It was on the bike when I bought it and it is a huge improvement in power all acrossed the powerband compared to my last 400ex that was bone stock. I have a DG bumper on mine and it is TUFF ive smacked some good sized sapplings with it and have gotten tangled up with other quads on a holeshot and its held up awesome.Originally Posted by inv3ctiv3
How are your shocks? can you tell a big improvement with the 450 shock swap? GREAT PICS EVERYONE!! KEEP THEM COMING!!!
Does anyone have a 440 kit with a 10:1 compression piston? Ive thought about adding this anyone have experiance with a lower compression piston instead of a 12 or 11 to 1.
"I'm Kind Of Like The Turtle Man Of 3Wheelers."
1986 Honda 350X
1985 Honda 250R
1985 Honda 200X
Roostin' Away
Arm chair racerRoostin Away
Yea the shocks are amazing! Such a good upgrade for the money.
1985 Honda 200x
1986 Honda TRX350D - Gone but not forgotten 1982 Honda 185s*sold* 1985 200x*sold* 1983 200x*sold* 1985 ATC70*sold* 2002 Honda 400EX*sold*
Power User
Roostin Away
if you look inside the carb you will see an old school butter fly valve choke. even when fully opened it still restricts alot of air flow. if your don't mind not having a choke try taking it out and see how you like it (with new pipe and filter as u mentioned) it can always be put back if it doesn't help. With the mods i had done it helped give a bit more high end. Its nice for a free mod thats reversible
Roostin' Away
Arm chair racerRoostin Away
Does it make the bike harder to start when its cold without the choke?
1985 Honda 200x
1986 Honda TRX350D - Gone but not forgotten 1982 Honda 185s*sold* 1985 200x*sold* 1983 200x*sold* 1985 ATC70*sold* 2002 Honda 400EX*sold*
Got The Holeshot
Arm chair racerJust too addicted
do you have the 440 kit in it now and want to drop the compression? or are you wanting to install a 440 kit? i have good info on building 400EX engines if you are interested. avoid the 440 kit. i can build more power from a 416. my 416 will smoke 450s and even many modded 450s.
Power User
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well i never had to much of a problem. 400EXs have a accelerator pump and what that does is squirt a bit of gas when you stab the throttle for better throttle response. so on a cold morning hitting the throttle a few times before cranking it over normally did the trick. and thats here in Michigan where it gets cold, id imagine over in Cali it doesn't get as bad. during the warm month i never needed a choke, maybe a few seconds of baby sitting the throttle as she got hot but thats it.
I did have a higher comp piston and that may have helped start it cold too, it all varies
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