1/8 mile drag racing

[matt6951]

what is the best set up for 1/8 mile racing on pavement?

[400ex men]

what are you sayin like what?

[nakomis0]

Well besides the biggest and baddest motor you can afford. You need a very good clutch, a narrow and short lenght quad with a wheelie bar... oh ya slicks too .

:D :huh

[matt6951]

Originally posted by matt6951
what is the best set up for 1/8 mile racing on pavement?
i mean motor wise

[K_Fulk]

Originally posted by nakomis0
the biggest and baddest motor you can afford.

Go with a 92mm bore 6mm stroke with a heaping helping of compression. Not to mention all the other stuff you need when building a fast motor.

[frosti108]

or get your hands on a gixxer engine and pop that in the ol 400 :D

but seriously that thing would haul with whatever engine you got in there, 600cc to 1300cc... :devil:

but yea whatever you do, a wheelie bar is NEEDED ;)

[matt6951]

anyone have any links to some bad *** ****?

[One_Bad_400]

here is my 1/8- 300ft. bike... get long swingarm not short, make strut so you get all the power to the rear wheels, when you have a shock the power is squating the rear end, and not geting the power to the wheels, get hoosier tires

http://www.imagestation.com/picture/sraid133/p7804892a6549f1917ec98eac0914d36b/f7816f53.jpg
http://www.imagestation.com/picture/sraid133/p5699cec669221890ec3c03e2238bcffb/f781700a.jpg

[One_Bad_400]

in my upinion do use that 400ex as a drag quad if you are rilly geting in to it, you cant get much power out of the 400ex like you can out of the other engines, if i was you i would do a raptor or a z400, if you put cams, carb, 450 kit those are the fastest bikes alive :blah: i dont know much about raptors but ive hurd they are one of the fastest 300 ft. bikes

[matt6951]

i dont want it to be the fastest thing out there just as fast as possible without having to buy another quad no one makes 1/8 mile quads out of 400ex's and it may be for a reason, but its what i got and i want to make it as quick as possible

[nakomis0]

Originally posted by One_Bad_400
here is my 1/8- 300ft. bike... get long swingarm not short, make strut so you get all the power to the rear wheels, when you have a shock the power is squating the rear end, and not geting the power to the wheels, get hoosier tires



I disagree about the long swingarm. I would actually recommend an inch or 2 shorter than stock,.

Its less weight, and the weight is more distributed over the tires where the traction is.

Don't take this the wrong way but, are you mexican? Becuase thats more commonly thier style. And the shorter setup is far better and beats most of em. Sorry but its true

I've seen it, we race it, it works.

We have an 88hp banshee running on 93 octane that says thats the setup that works.

ps.. when i'm saying run a short swingarm, you have to run a wheelie bar.

[mikeboone]

Is he mexican? I am not and ran a plus 4" on my Drag 435ex. If you run asphalt you HAVE to run ext. swingarm if you dont have a wheelie bar--IF your making power. Mine ran best of 8.12 at 78 mph in 660ft with 1.70 60ft time 5.19 330ft time. No Nitrous or methanol. Just build what you can afford to do and have fun with it. Sure the banshees will show you the tail lights but it happens:D I highly recommend slicks or TT tires and be sure to heat them in the water box.

If You DO plan to run some dirt tracks as well you will need a wheelie bar to keep the tires planted--extended swings dont work at all there. Check out www.atvdra.com You may have to sign up now to read forums but it's all about drag racing quads across USA>

[matt6951]

what do you recamend for gearing and tire size?

[Chef]

Originally posted by One_Bad_400
[B]in my upinion do use that 400ex as a drag quad if you are rilly geting in to it, you cant get much power out of the 400ex like you can out of the other engines, if i was you i would do a raptor or a z400, if you put cams, carb, 450 kit those are the fastest bikes alive :blah:

lmao...bring whatever Z450 you want and I will bury it alive on my EX. :eek:

[440ex2001]

get a 426 or 440 kit for your 400 12.5:1 comp
Ported and polished head and some larger valves
Hotcam Stage 2
+1200 rpm CDI
Larger Carb
Run slicks out back
Strap down the front
Extended swing arm /wheelie bar
Pipe, Correct jetting
NOS kit
The sky is the limit man
You'll have to figure out your gearing just keep changing it make power all the way down.
Or you could do like me keep build the 400 up midly just so you can beat your buddies but keep it set up for trails or whatever and in vest In an old quadzilla I found one cheap and it runs in the 8's with stock gearing.

[mikeboone]

Originally posted by matt6951
what do you recamend for gearing and tire size?

I ran 16/36 with 18" Hooisers pumped up to about 7 psi. (actually about 20" tall) Before ayone with some damn 'gear calculator" says I cant hit 78 on a 400ex with that gearing and tires all E/T were done at Rockingham Dragway and I assure you the trap is correct. Pinging rev limiter at 84.27 mph at 1/4 mile.

I had the Hotcam Stage II, Race ported head, O/S Intake & Exhaust Valves, 3 angle valve job, FCR 41mm, decked .030 cylinder, Ported intake boot, Ross 11.2:1 89mm, High rev CDI, Carrillo Forged Rod, and Yoshimura slip on with stock headpipe:huh Billet Drag shocks and chromoly plus 4 swing kept it from raising up.

It sure was fun and I may build another in 465 bore one day.....

[LTZ400rider]

Originally posted by Chef
lmao...bring whatever Z450 you want and I will bury it alive on my EX. :eek:

its on. my stock z400 vs. your 465. give me a headstart since im stock

[matt6951]

anyone else got any tips?

[K_Fulk]

Keep it as light as you can.

[mikeboone]

If you dont plan to trail ride remove: headlights, skid plates, bumper, and rear brakes. Pump the front tires up tight for low resistance and keep gas level on low side for less weight. Take off in 2nd gear slipping the clutch and dont 'dummy rev' the motor. Try to keep the revs around 6-7K (3/4 throttle) w/o letting them raise or drop much till the green. Lean over the bars to keep the front down. You cannot get a good launch or consistent times if you dont leav around the same rpm each time.

When the tree comes down leave at the last yellow and you'll have a good reaction time.

[440ex2001]

Mike did you guys "deepstage" down in rockingham? Somone showed me how to do it and it helped a ton on my reaction time and ET. I'm sure mike knows but for you guys that dont make sure you stage up first. Light the top stage light then the bottom once you do that barely creep up until the top stage light goes off. Then STOP. I was told it gives you about a 6-8 inch head start.

[frosti108]

as soon as i get my truck, im gonna head down to maple grove raceway to see what my quad can do. ive been thinking about making my quad into an asphalt dragger since theres not much riding around here...
at very least, ill get to see what its top speed is by the trap, which is sweet. and depending on how it does, i might start making my quad up to be purely asphalt, no dirt. sorta like Onebad400's banshee which is ***KING sweet by the way...

but then again, i might just keep on ridin trails... :p
lol i just gotta see how i like the drag strip vs trails


oh and dont say "oh man dont even try using a 300ex, theyre slow" im not out to have the fastest quad, im just looking to pull some nice times for a 300ex is all...

[440ex2001]

300 hundreds can be plenty fast. There was one at Piedmont Dragway in NC a few months back that ran a little over 66mph at 9.3 or 9.4 in the 1/8th. It was a real sleeper. Looked like an ordinary 300.

[frosti108]

^ yea man someone on atvdra.com told me he saw a 300 run in the 8s which is nuts. well if theres one thing i am sure of, its that im going to pull a FAST trap speed (for a 300ex lol)
right now the gearings at 14/33, with 20 inch rear tires and no rev limiter. plus i have all high rev supporting mods so damn right im gonna push it, its just hard knowing your limits without the limiter and all...
because if i do float a valve, it wont be the 1st time... :(


also i forget if the 300 can fit a 15t front sprocket, but its already pretty tight in there with the 14 so ill see if i can get a 15 in there...
and im in the market for new rear rims/tires so i might be going up to 22 inchers but ill see

[livealatimmy]

I'm pretty sure that you cant put a 15t on a 300.Also I would'nt go with 22in tires cause they will slow you down big time IMHO

Also I have personally seen Mike run his 400 at rockinham and it did run what he said

[matt6951]

Originally posted by livealatimmy
I'm pretty sure that you cant put a 15t on a 300.Also I would'nt go with 22in tires cause they will slow you down big time IMHO

Also I have personally seen Mike run his 400 at rockinham and it did run what he said
so 20's are all around best? what about front suspension?

[frosti108]

i think struts would be best. but then its like, where the hell can you get them... i doubt anyone makes them for the 300ex, so if i want them i bet ill have to have them custom made...

[mikeboone]

I ran Marvin Shaw billets. They are made to your specs with regards to length and PSI of nitrogen. All should fit any quad but you WILL need to specify clevis installed if the 300ex has a link on swingarm. All Marvin Shwas come standard with round eyes on ends and nitrogen can be easily changed with outer valve. Here is where I bought mine and they have the best price:

http://tysonracing.com/Marvin_Shaw_shocks_.htm


Heres link to my old pics with them installed. Notice the 3rd pic: I didn know about round eyelets on rear so I did away with the linkage and the airbox (angle wont allow shock to fit) K&N mounted to intake tube. http://www.atvnc.com/forums/index.php/topic,3499.0.html

[mikeboone]

Originally posted by 440ex2001
Mike did you guys "deepstage" down in rockingham? Somone showed me how to do it and it helped a ton on my reaction time and ET. I'm sure mike knows but for you guys that dont make sure you stage up first. Light the top stage light then the bottom once you do that barely creep up until the top stage light goes off. Then STOP. I was told it gives you about a 6-8 inch head start.

Yea, that will give you a little higher MPH but should slightly hurt the e.t.