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View Full Version : kx500 motor in a raptor....



2k2-300exnj
04-02-2003, 12:32 PM
my uncle wants to put a kx 500 motor into his axis/roll/denton equiped raptor because he is not happy with the performance of the stock 660 four stroke
now i have heard that the vibration will crack the frame.... why is this? something about a counterbalancer i kno but can someone explain exactly what it is that a counterbalancer does and how they are mounted or used on a dirtbike?
any help is apprieciated
reply ASAP thanks
:confused:

tants
04-02-2003, 12:43 PM
unhappy with the raptor motor? not fast enough?? :eek2:

Pappy
04-02-2003, 12:45 PM
introduce him to a 770 kit and a turbo:devil

Chanman420q
04-02-2003, 12:49 PM
hahaah yea run it on alky... hey pappy almost 8,000 posts :eek2: :eek2:

04-02-2003, 12:50 PM
i personally wouldnt waste time puttin that engine in a raptor frame, they arent that great, i would put it in an R frame or 400ex frame, whatever works.

Juggalo
04-02-2003, 01:00 PM
i have a friend who had a worked over KX500 motor in a tecate frame and vibration wasn't too bad but the motor swap was really nice he did. if you do it right it can be done but its still hard on the frame.

2k2-300exnj
04-02-2003, 01:32 PM
Originally posted by bobby88
i personally wouldnt waste time puttin that engine in a raptor frame, they arent that great, i would put it in an R frame or 400ex frame, whatever works.
the frame isnt that bad it was the width and handling now it is perfect with all the travela nd everything

introduce him to a 770 kit and a turbo
then it would equal a kx 500 in power but u of everyone should kno kenny that there is no power like 2 stroke power

2k2-300exnj
04-02-2003, 01:33 PM
Originally posted by tants
unhappy with the raptor motor? not fast enough?? :eek2:
nothing is ever fast enough but the raptor handles great with this set up and seems like it needs more power and a 2 stroke would be perfect it will be kinda like a quadzilla with more power and better suspension:eek:

killed300ex
04-02-2003, 01:40 PM
with turbo and a 770 kit i think the hp numbers would absolutly be more than a kx500. Also i think that with turbo the power or the turbo might hit kinda like a stroke not sure though. BUt i think that a 770 turbo would be more fun in the dunes anyways. Plenty of power and then you could also put nos ontop of that and that wouuld just be a scary fast quad.
killed

04-02-2003, 01:40 PM
man that looks like its been through hell, id just mod the raptor motor, if thats not enought then ride the cr 500 bike, puttin that motor in a raptor seems like a wste to me

Pappy
04-02-2003, 01:51 PM
Originally posted by 2k2-300exnj


then it would equal a kx 500 in power but u of everyone should kno kenny that there is no power like 2 stroke power

i dunno dude...ive ridin a few raptors that were built...and a few of them felt faster then my LT500. marty has a turbo raptor...ill have to take it for a spin and see whats up:devil

04-02-2003, 01:53 PM
i never rode a modded raptor but i have trouble believing they have any chance against a cr 500 or kx 500 bike, the quadzilla i dunno anything about

Atreyu
04-02-2003, 01:57 PM
That thing would be pretty quick. If you think about it..hes taking away a big heavy engine and putting one in thats 2/3 the weight and wayy more power. Just tell him to get a newer kx or cr 500.

Pappy
04-02-2003, 01:57 PM
ummm...they dont really...the bike has the power to weight advantage. its no contest. i use to race my friend on his cr500 on my LT...all i got was a lap full of sod:devil i think the power characteristics of a 500cc 2 stroke is way wrong for atv use...unless it draggin or the dunes.

i would say for only 2000$ you could mod the raptor engine to be a real handful:o

04-02-2003, 01:59 PM
i agree with pappy with the money ud pay for the bike and fabrication uc doul put money in the raptor and make it rip

kicken250x
04-02-2003, 02:01 PM
all of you keep saying the turbo kit and the 770 kit but if he can find a way to mount the motor it will be a fair bit cheaper than the turbo kit and prob. about even with the 770 kit. that turbo is like 2 grand+/-:eek:

2k2-300exnj
04-02-2003, 04:16 PM
Originally posted by kicken250x
all of you keep saying the turbo kit and the 770 kit but if he can find a way to mount the motor it will be a fair bit cheaper than the turbo kit and prob. about even with the 770 kit. that turbo is like 2 grand+/-:eek:
correction turbo = 3500
770 full kit = geussing 3000
6500 is more than a new kx500 dirt bike which is what he will be doing buying a new kx 500 and removing the motor and fabricating it for the raptor

lil400exman
04-02-2003, 04:23 PM
isnt broque ward doin the work on this? aka beerock.........................i talked to him today and he said he was.............................:rolleyes: i am sorry for him...............:confused2

2k2-300exnj
04-02-2003, 04:33 PM
Originally posted by lil400exman
isnt broque ward doin the work on this? aka beerock.........................i talked to him today and he said he was.............................:rolleyes: i am sorry for him...............:confused2
doing the work? no me and broque are pals and i asked him about it but he wasnt doing anything on it unless he wants to help lol

AndrewRRR
04-02-2003, 06:01 PM
What type of riding is he going to do? If it's anything but drag racing (make a few passes then park it) he won't be happy when his arms go numb and he can't feel his legs. lol Stay away from a dirt bike motor if it's not a drag bike.
Of course, if he has $1500 or so to spend he could pick up a street bike motor and throw an easy 140hp between the fenders. It won't be good for trails or jumping after that though.

2k2-300exnj
04-03-2003, 10:21 AM
Originally posted by AndrewRRR
What type of riding is he going to do? If it's anything but drag racing (make a few passes then park it) he won't be happy when his arms go numb and he can't feel his legs. lol Stay away from a dirt bike motor if it's not a drag bike.
Of course, if he has $1500 or so to spend he could pick up a street bike motor and throw an easy 140hp between the fenders. It won't be good for trails or jumping after that though.
he put an lt 250 quadracer motor in a go-kart that was made for a 5hp briggs.... there is no vibration and that things hauls and never cracked the frame...
if this is done rite it wwont vibrate as much i dont think....
and rubber mounts could be made in certain areas to kill some vibration couldnt they?
im still confused about the counterbalnce can someone explain that?

Juggalo
04-03-2003, 03:02 PM
Originally posted by 2k2-300exnj
he put an lt 250 quadracer motor in a go-kart that was made for a 5hp briggs.... there is no vibration and that things hauls and never cracked the frame...
if this is done rite it wwont vibrate as much i dont think....
and rubber mounts could be made in certain areas to kill some vibration couldnt they?
im still confused about the counterbalnce can someone explain that?

the LT motor is also counterbalanced...

02Yellow400
04-03-2003, 04:56 PM
My buddys tranny just went in his 01 crapturd this weekend and he is thinking about sellin his motor and buying a kx500 motor in his quad. Personally I would go with the CR500 motor. But if he actually goes through with it i will be sure to put some pics up

300extreme#8
04-05-2003, 03:20 PM
there was a guy who bought my cuz's cr500 and put it in a go-cart and it had a alittle vibration but he had to get rid of it b/c he couldn't keep the front wheels on the ground long enough to steer itand get on the gas at the same time.

02Yellow400
04-05-2003, 03:47 PM
Those motors have tons and tons of power. Kawasaki should do something with motor in a quad frame. Something that could run with the banshees

AndrewRRR
04-06-2003, 08:12 AM
Originally posted by 02Yellow400
Those motors have tons and tons of power. Kawasaki should do something with motor in a quad frame. Something that could run with the banshees

Pretty much any quad manufacturer could make something that would be insanely fast. They don't because of liability issues. The japanese companies are very image consious. Heck, when Nissan introduced the 240z in the US, they put it under the Datsun name because they didn't want to tarnish the name Nissan if the US didn't like the car.
If Kawasaki (or Honda or Yamaha or Suzuki) put out a 100hp quad, lots and lots of people would die or become paralyzed, thus hurting the reputation of the manufacturer. They leave it up to the aftermarket to make it faster.

02Yellow400
04-06-2003, 08:14 AM
Thats a damn good point.

250xex
04-06-2003, 08:34 AM
Would a 2-stroke pipe fit int the raptor frame? Would he use the kx pipe or have one made?

02Rap
04-06-2003, 12:54 PM
tell him to lose that peice t-4 pipe and upgrade to a sparks with the sparks 690 kit. that is a ton of power on tap and far more realistic than a turbo and 770. just my 2 cents

300extreme#8
04-06-2003, 02:37 PM
Originally posted by AndrewRRR
Pretty much any quad manufacturer could make something that would be insanely fast. They don't because of liability issues. The japanese companies are very image consious. Heck, when Nissan introduced the 240z in the US, they put it under the Datsun name because they didn't want to tarnish the name Nissan if the US didn't like the car.
If Kawasaki (or Honda or Yamaha or Suzuki) put out a 100hp quad, lots and lots of people would die or become paralyzed, thus hurting the reputation of the manufacturer. They leave it up to the aftermarket to make it faster.
so if yamaha comes out with the 500 v-twin 100hp banshee like atv action says,that means that they won't make them for long and get outlawed like the 250r did

AndrewRRR
04-06-2003, 02:48 PM
Originally posted by 300extreme#8
so if yamaha comes out with the 500 v-twin 100hp banshee like atv action says,that means that they won't make them for long and get outlawed like the 250r did

Most of those magazines are full of you know what. Was this the April issue by chance? The ban on 2 strokes goes into effect in 2005 I think. Yamaha isn't even sure if they want to give the existing banshee a facelift before then, let alone bring out an all new one. It's too big of a capital investment (design, machinery, R&D, etc) for a 1 year production run.
The 250r wasn't outlawed, the manufacturer's and the EPA decided to move away from 2 stroke race bikes and start building "sport" quads that more people could ride safely. Again, they didn't want to hurt their image with a lot of injuries due to making fast bikes. Only in recent years are bikes starting to be as fast as the old 2 strokes were. The 250r ended in 89, the LT250r and LT500 ended in like 92, the tecate 4 was late 80s (i think), and Yamaha completely ignored the situation and kept producing the banshee.

04-06-2003, 02:51 PM
god that banshee in dirtwheels was a april fools joke! how man v twins use 1 carb:huh

300extreme#8
04-06-2003, 03:01 PM
i said if they ever comeout with it

lil400exman
04-06-2003, 03:05 PM
tell em free ride but did u see the nawwwwwwwwws canny in it woah........................ the coffee can exhaust really added hp to it..........ppl 250'rs and zilla's are the "muscle cars" of quads. They quit making them cause kids were qrapping themselves around trees and all that crappy stuff. Now we need to treasure these quads and really kick butt with them.I do admit though that quads are getting faster again but they arent still the hit of a 2-stroke and i give yamaha a kudos for amkin the banshee cause they care about performance not image....................:) i just had a to talk a lil..............

AndrewRRR
04-06-2003, 03:18 PM
As much smack as I sometimes talk about Yamaha, you do have to give them credit for having big huevos. They kept making the banshee after the others stopped 2 strokes, and they made the biggest displacement 4 stroke sport quad before anyone else.

2k2-300exnj
04-07-2003, 12:53 PM
Originally posted by 02Rap
tell him to lose that peice t-4 pipe and upgrade to a sparks with the sparks 690 kit. that is a ton of power on tap and far more realistic than a turbo and 770. just my 2 cents
there is no power increase like a 2 stroke the power is ALWAYS ALWAYS there and to the question about the pipe he would cut it and bend it to fit or get one made.....
so whos thinks it would work who doesnt maybe i should make this a poll or something