what does it take to make a 400 run with a 660

[fastfox]

what does it take to make a 400ex run right with a 660 rappy???

[Wheelie]

My stroker has no problem w/stock and lightly modded 450's, DS650, or Craptors. Have yet to race a 700 though, I'll found out in March the results of that one.

[CHEVYZ]

Drag race, top end.....?

[fastfox]

dragrace

[blown331]

id imagine a pretty low gear set, and quite a bit of boltons to come close..

then agian its all in the rider

[BlackTrx440ex]

bottom end i spank raptors on my 440 but i havent raced one top end yet...... raptor 660's iam talking havent raced any 700's

[81 clark racing]

i have raced craptors 660 and 700s threw the trails and i kill them on my 400. its all in the rider tho

:rolleyes: 6pack and a bottle rocket taped to your back bar

[400exMO]

an mx track:devil:

[400eXr1d3rZ]

A skilled rider.

[cory]

A cliff.

MY BUDDY HAS A 700 CRAPER ,NOT TOP SPEED BUT IN LIKE A 300 YARD DRAG HE ONLYGETS ME BY 1OR 2 BIKES ,ALSO I HAVE ROAD HIS 700 ,BIG AND HEAVY ,STICK WITH YOUR HONDA

[idro]

Originally posted by MUCUS416
MY BUDDY HAS A 700 CRAPER ,NOT TOP SPEED BUT IN LIKE A 300 YARD DRAG HE ONLYGETS ME BY 1OR 2 BIKES ,ALSO I HAVE ROAD HIS 700 ,BIG AND HEAVY ,STICK WITH YOUR HONDA

http://www.kirun.co.uk/web/capslock/keyb2a.jpg

check it :cool:

[KingpinsEx]

A good rider! I have out ridden several raptors on a bone stock ex on both the mx track and trails...but your gonna get destroyed on the top end no matter how you look at it, so i would just shy away from drags and straights. But anything technical you'll have the advantage.

[cory]

A big bag of sugar.

[interceptorz28]

My friends Raptor 700 just romps in the straight drags. Hell, the displacement is almost twice the 400. I can hang with him halfway thru a 200 yard drag then he is gone. If I get the holeshot, he passes me halfway thru the race. So, its that top end power that gets it.
...I haven't rode any cammed big bore 400's, but I expect that is what you need to keep up.

[rooster300ex]

You will need to get that 460cc big bore kit I seen in an atv sport magazine. Port & Polish,Cam,Big Bore kit,good aftermarket pipe and gear it up alil bit if you wanna beat a raptor on topend.

[sandmanblue]

Let's face it, the 660 rappy with just a pipe/open airbox and rejetted is going to have better than 45 hp. Very few 400ex based builds ever reach that high, so you're going to have to spend a lot of cash to beat the Raptor in a drag race.

If you're that interested in going fast, you might as well switch to another quad entirely. A mild modded 450 will spank the 660 and hang right with the piped 700's. You'd spend just as much on that 400 to get close to the same performance, but you'd lose a lot of that money when you sell it.

If you do mod it, get it on a dyno and see what it does, then post it here....

Originally posted by idro
http://www.kirun.co.uk/web/capslock/keyb2a.jpg

check it :cool: :confused: WHAT? YOU DONT LIKE CAPS :confused: :confused: :chinese:

[interceptorz28]

I forgot to mention that I always get 2-5 quad lengths head start when I race the Raptor 700.:D

[krt400ex]

full pipe, and a cam will keep you neck and neck with them

[PismoLocal]

Originally posted by sandmanblue
Let's face it, the 660 rappy with just a pipe/open airbox and rejetted is going to have better than 45 hp.
45hp??? Thats a big number for only getting a pipe/jetting/open air box. Where did you get that number from? I thought Raptor 660's only had around 35-37 hp from the factory. I couldn't imagine a pipe/open air box/ jetting making a 8-10hp difference.

[krt400ex]

he is right though. i saw dyno #'s....and not from a site advertising their pipes.


i said what i said based on him going against a stock raptor. (i.e. a cam and pipe is good enough)

[sandmanblue]

Originally posted by PismoLocal
45hp??? Thats a big number for only getting a pipe/jetting/open air box. Where did you get that number from? I thought Raptor 660's only had around 35-37 hp from the factory. I couldn't imagine a pipe/open air box/ jetting making a 8-10hp difference.

Just like the 450's and the 700, the 660 was choked up stock. I am being conservative with the 45 hp too. Go to CTracing.com, they claim 50 hp out of their pipe/jetting/open airbox kit. I don't see too many disputing Alan's claims either. His pipes make a lot of power. Personally, my old 660 would run right with my two friends FMF piped Banshee up Olds hill. It seems common knowledge that if you stick FMF pipes or T-5's on a Banshee, that they are in excess of 45 hp. Look at the post MobileDyno did in the dyno section of the FMF SST pipes. 50 hp.

There is also a 700 that was tested with and without NOS. It ran 48.8 with just the GYTR pipe and airbox lid + EFI controller. Why would it be so hard to believe that the 660 could make 45 with just a pipe and airbox/jetting?

Even so, go find a 400ex motor that's over 40 hp....

Stock, they run about 30. 31-32 with a pipe. (see dyno section)

There's a lot of 400 based runs. Find one that has less than 2 grand in mods that will get close to 45 hp.... Have fun...

[cory]

Amen to that....you wouldn't even want to know what I've got in my poor ole 400ex.....and I regularly get smoked by the new 450s. If only they would have came out with the 450R in the late 90's, I would be alot faster for less money. Some of my aquaintances have 450s that put out a dyno proven 50 plus HP with no bore and no stroke. How are we supposed to keep up with that?

[SandNut777]

Now that was funny.Like they said a little skill will help 400s and 440s will spank them in the bottom end they just get u top end. 440 Cylinder, Wiseco 11:1 piston and stage 2 hotcams would help alot. GOOD LUCK!

2001 400EX soon to be 440EX
Wiseco 11:1 piston
AC Black Line Pro Peg Nerfs
ASV Pro Pack Levers (Billet Red)
ITP Pro 9 Wheels All Around
ITP Holeshot HD Tires Front
Aluminium Air Box (Insane Performance)
DG Front Bumper
K&N Air Filter And Outerwares
ITP Sandstar and Douglas Blue Labels (for the sand)
Pro Circuit T-4 (In Garage) to loud for the city.
Renthal Handlebars W/Tag Grips
Bill's Headpipe On Order

[krt400ex]

Originally posted by cory
Amen to that....you wouldn't even want to know what I've got in my poor ole 400ex.....and I regularly get smoked by the new 450s. If only they would have came out with the 450R in the late 90's, I would be alot faster for less money. Some of my aquaintances have 450s that put out a dyno proven 50 plus HP with no bore and no stroke. How are we supposed to keep up with that? yupp, my friend has a sparks motor in his 450r(with a few unobtainable parts:devil: ), and he is pushing about 57 without porting:eek2: . his bike is nuts!, but he does run a 14:1 high comp head and piston, so that helps

[krt400ex]

Originally posted by SandNut777
Now that was funny.Like they said a little skill will help 400s and 440s will spank them in the bottom end they just get u top end. 440 Cylinder, Wiseco 11:1 piston and stage 2 hotcams would help alot. GOOD LUCK!

2001 400EX soon to be 440EX
Wiseco 11:1 piston
AC Black Line Pro Peg Nerfs
ASV Pro Pack Levers (Billet Red)
ITP Pro 9 Wheels All Around
ITP Holeshot HD Tires Front
Aluminium Air Box (Insane Performance)
DG Front Bumper
K&N Air Filter And Outerwares
ITP Sandstar and Douglas Blue Labels (for the sand)
Pro Circuit T-4 (In Garage) to loud for the city.
Renthal Handlebars W/Tag Grips
Bill's Headpipe On Order


no ofense or anything..just wanna help you out cuz your new.

it would save alot of time if you just put your quad with the mods in your sig. it would be much much easier, and it would save room when ppl quote you. just go to the top of the web page, and click "user cp" then click "edit options", and everything else is self explanatory

[duneaticdave]

gas

[krt400ex]

Originally posted by duneaticdave
gas


lmfao. gas and a little motor work pal. have you ever raced a craptor?

[SandNut777]

Sorry i didnt know you could do the sig thing but i do now TY


SandNut777

[krt400ex]

Originally posted by SandNut777
Sorry i didnt know you could do the sig thing but i do now TY


SandNut777

its ok, just tryin to help ;)

[woodsracer144]

rider, my buddy rode a old 91 crappy 250x and what keepin front of a guy that has rode for many reays and his son that spanks 450r's on there 440's and he walked all over them in the oma tracks, its all in the rider, im startin to be able to keep with my buddy on my blaster, im gonna get a 400 and get ****ty shocks or stick with my blaster w/crapy shocks and then im gonna hop on a race ready 450 or 426 or something like that and i'll beable to fly, thats what everyone has said around me, becasue at everyrace theres that one guy that his mom and dad get paid alittle too much and he gets a pimped out yfz or a 450r or something and he couldnt ride it to save his life,

[450rJam]

400 has weight advantage over the 660. cam/high comp piston/pipe/no lid/jet
and learn to ride and you can make it close in 250-300'

the 700 rappy will prob. still be in font