One question: Was there any issue with putting the bolt holding the engine through where the swingarm mounts to the engine. Is there any thickness difference between the 400 and 650 on that mount?
@Madacko i dont have much experience, so do you thinnk i could do this with the help of one of my friends that a mechanic? also if it isnt too much trouble will you name me what all you had to do?
@stevekx500 Hi mate, the YFZ shocks are heaps better than the stock 400EX shocks & if they altered the ride height it wasn't by much because I didn't notice. It might pay tho check the width of the 450R top mount as the YFZ ones require machining to fit into the 400EX frame.
i just finished putting an xr650r motor into my lt250r n its power is way diff than the 2 stroke its nice! ! no more mixing gas and buying 2cycle oil lol
yea i looked into that and some people have done it and love it but some other people say it strains the motor too much with the extra weight but i may still try it and just put different sprockets on it. thanks for yoir help
@mrcr125er No worries mate, let me know how you get on. Mine's geared fairly tall, think it's 16-38 with the standard sized rear tyres, but 1st gear is still fairly low.
That's crazy man, but I would keep your eye on your spacers at the rear wheels, I don't know what they are made out of, but that will be a lot of stress on your bolts
i have a hard time tryin to spit rekluse too man why did they have to name there company that but god dam dude i want one of them auto clutchs sooo bad for my crf450r it would make it soo much more easy to ride in the trails
@Xxslayer410xX It might be hard to pronounce but it is definately worth it's weight in gold! No more stalls in the tight twisty stuff & if done right it'll start in gear & be on it's way as soon as the revs get above idle.
I'd really like to do a build like yours. I have an 08 Raptor, but they are so common place. I'd like to have something I fabricated and that's unique.
From what I can tell, an "uncorked" 650r with aftermarket exhaust is around 55hp, which is where a tuned Raptor would be. The 700XX would likely put out that power too, but it's a lot heavier.
A race would likely boil down to the power-to-weight ratios and rider skill.
With some engineering skills it was easy but there were a few things that needed special attention, the kick starter won't fit, chain alighnment is wrong & the stock fuel tank sits too low & hits the motor which is why I've got a custom alluminium tank.
They actually work really well! I machined them up out of high tensile steel about 7 years ago. They are threaded in one end & screw onto the stock studs with another stud on the opposite end for the wheel nuts. I jump it over a 60ft table top whenever I can & it cops a hiding. Some time ago I crashed it into a tyre wall @ 100km/h while racing, I bent a rim & the axle but didn't break the high tensile studs or the hubs.
I was only being conservative. I know they make 50hp stock, but I haven't had it dyno'd yet so I'm only guessing when I say 70 or 80hp? I know the torque is amazing tho! I've just fitted a new carby & will be getting it dyno'd very soon. I'll post the results.
idont mean to me mean or a jerk but 70 Hp? what does the motor have for Hp in the bike? im a big 250r guy and they get abou 80Hp out of a 389CC polanda motor... i would thought the 650 would be more then 70Ph....
One question: Was there any issue with putting the bolt holding the engine through where the swingarm mounts to the engine. Is there any thickness difference between the 400 and 650 on that mount?
chillrasta12 2 months ago
@chillrasta12 Hi, yes the XR650R bolt is bigger so I just machined up a bush to suit
Madacko 2 months ago
your gas was off. jus sayin. haha.
wolfteam121213 5 months ago
hey, how hard wasd it to put this motor in the 400ex frame? i need to know soon
mraaronperson 7 months ago
@mraaronperson I'm a mechanical engineer so for me this conversion was very easy, the only thing i didn't do was weld up the alloy fuel tank.
Madacko 7 months ago
@Madacko i dont have much experience, so do you thinnk i could do this with the help of one of my friends that a mechanic? also if it isnt too much trouble will you name me what all you had to do?
mraaronperson 7 months ago
How do you like the YFZ shocks? Can't decide to put 450r or yfz450 shocks on mine. Did it lower the front end? If so, by how much?
stevekx500 7 months ago
@stevekx500 Hi mate, the YFZ shocks are heaps better than the stock 400EX shocks & if they altered the ride height it wasn't by much because I didn't notice. It might pay tho check the width of the 450R top mount as the YFZ ones require machining to fit into the 400EX frame.
Madacko 7 months ago
i just finished putting an xr650r motor into my lt250r n its power is way diff than the 2 stroke its nice! ! no more mixing gas and buying 2cycle oil lol
joedirtay123 7 months ago
@joedirtay123 Sounds sweet mate!
Madacko 7 months ago
yea i looked into that and some people have done it and love it but some other people say it strains the motor too much with the extra weight but i may still try it and just put different sprockets on it. thanks for yoir help
mrcr125er 8 months ago
@mrcr125er No worries mate, let me know how you get on. Mine's geared fairly tall, think it's 16-38 with the standard sized rear tyres, but 1st gear is still fairly low.
Madacko 8 months ago
That's crazy man, but I would keep your eye on your spacers at the rear wheels, I don't know what they are made out of, but that will be a lot of stress on your bolts
420Dizzle7 9 months ago
that is some major work
NHenry166 9 months ago
naaa ill pass id rather have a clutch but its a nice quad
oSHOLLIVERo 9 months ago
gay no one wants something without a clutch
oSHOLLIVERo 9 months ago
@oSHOLLIVERo Hey don't knock the rekluse clutch till you've tried one, it's bloody awesome!
Madacko 9 months ago
drive it more
16jriel 11 months ago
drive it
16jriel 11 months ago
hey how fast have u goten it up to
7JJPKRACING 1 year ago
so you just let off the gas and shift it up?
83PoWeRrAm 1 year ago
@83PoWeRrAm Yes it's as simple as that
Madacko 1 year ago
SEXY
13rparsons 1 year ago
thats bad ass. i got a 2001 440ex and it runs great never hap one problem with it but nic vid.
runickman 1 year ago
nice ride
jdmcka 1 year ago
i have a hard time tryin to spit rekluse too man why did they have to name there company that but god dam dude i want one of them auto clutchs sooo bad for my crf450r it would make it soo much more easy to ride in the trails
Xxslayer410xX 1 year ago
@Xxslayer410xX It might be hard to pronounce but it is definately worth it's weight in gold! No more stalls in the tight twisty stuff & if done right it'll start in gear & be on it's way as soon as the revs get above idle.
Madacko 1 year ago
Nice mods..well done..Cool quad guy
73patgagne 1 year ago
where u got dat at
CoDSniping360 1 year ago
i wass just wondeing how you mounted that vapor speedometer
keiljoseph 1 year ago
@keiljoseph. Hi, It's mounted on the handle bars using the supplied mounting kit, which is also the same as a TrailTech unit.
Madacko 1 year ago
id ride it haha
Flattrack450r 1 year ago
dang and i thought my 3 400exs were bad ass but damn that thing is just a monster!
jpg180 1 year ago
nice job on that man
dennissteakin 1 year ago
man i have been wanting to do that to mine i have a 440
0000084595 1 year ago
Sweet quad. I'm 13 and I ride a 2006 yfz 450
Matt06yfz 2 years ago
@Matt06yfz wow rich daddy? ive got myself a Ltr-450 im 14 and pai for it ALL myself!
FullThrottle214 1 year ago
it seems great, except for the clutch... dont see a 13 year old riding a 60 hp machine
Hawkster0001 2 years ago
The auto clutch makes it really easy to ride. My little brother doesn't jump it or flog it stupid like I do, but he loves it.
Madacko 2 years ago
dude thats sick as good old honda lol
twigs1nr 2 years ago
How does your hybrid "TRX650R" hold up to a TRX700XX or Yamaha Raptor 700R?
moaski 2 years ago
To be honest I don't know anyone with one of those to race so i'm not sure?
Madacko 2 years ago
I'd really like to do a build like yours. I have an 08 Raptor, but they are so common place. I'd like to have something I fabricated and that's unique.
From what I can tell, an "uncorked" 650r with aftermarket exhaust is around 55hp, which is where a tuned Raptor would be. The 700XX would likely put out that power too, but it's a lot heavier.
A race would likely boil down to the power-to-weight ratios and rider skill.
moaski 2 years ago
did the yfz shocks just fit right in to front?
purepolarisquads 2 years ago
No I had to machine then in a milling machine to make them fit as they were too wide.
Madacko 2 years ago
k damn thanks
purepolarisquads 2 years ago
IM PUTTING THIS MOTOR IN MY LT250r MAN DO THEY RIP ?? I MAINLY WANTED IT FOR RELIABILITY
joedirtay123 2 years ago
It's an awesome engine! Very reliable & so much torque it'll pull in any gear from almost any speed.
Madacko 2 years ago
how hard was it to convert it to a 650? just new mounting tabs? that thing is sweet
bamaboy145 2 years ago
With some engineering skills it was easy but there were a few things that needed special attention, the kick starter won't fit, chain alighnment is wrong & the stock fuel tank sits too low & hits the motor which is why I've got a custom alluminium tank.
Madacko 2 years ago
very sick man.
99yamahablaster 2 years ago 2
I was a little worried I had put my kicker together wrong, but it looks like it really does go that far back to start with.
rustyATV 2 years ago
They actually work really well! I machined them up out of high tensile steel about 7 years ago. They are threaded in one end & screw onto the stock studs with another stud on the opposite end for the wheel nuts. I jump it over a 60ft table top whenever I can & it cops a hiding. Some time ago I crashed it into a tyre wall @ 100km/h while racing, I bent a rim & the axle but didn't break the high tensile studs or the hubs.
Madacko 2 years ago
I was only being conservative. I know they make 50hp stock, but I haven't had it dyno'd yet so I'm only guessing when I say 70 or 80hp? I know the torque is amazing tho! I've just fitted a new carby & will be getting it dyno'd very soon. I'll post the results.
Madacko 2 years ago
idont mean to me mean or a jerk but 70 Hp? what does the motor have for Hp in the bike? im a big 250r guy and they get abou 80Hp out of a 389CC polanda motor... i would thought the 650 would be more then 70Ph....
mornin151 2 years ago