250 2 stroke in a 400ex chassis??

[butti]

anyone done it?got links? what will it take?

[DOHC]

check out servicehonda's website they make them. I though about doing it and might still do it but i would be kinda point less for me as i ride track alot and the 2 strokes just dont have the torque

[DOHC]

here is the link to the srx 250r http://www.servicehonda.com/service.html

[butti]

i would like to do this in my frame.what is the horsepower of the newer cr motors?like 02ish

[jsu101]

450R is what you need

[butti]

this is exactly what i want to do!


http://www.exriders.com/vbb/showthread.php?s=&threadid=256082&highlight=400ex

[jsu101]

I gues i will have to get the tig warmed up for this one:muscle: cant just leave it stock:cuss: But i am down with it wait till scott heres about this. By the way clean your pms up in the X

[jason86PRP250r]

Originally posted by butti
this is exactly what i want to do!


http://www.exriders.com/vbb/showthread.php?s=&threadid=256082&highlight=400ex

that 400ex with 250r motor is mine that you posted the link about. the frame is holding up great since it's a 87 trx250r motor and dioes not vibrate.

that would be the better way to do it since the bike frames are not counter balanced. $5,000 is crazy high priced for that swap.

the guy i bought it from said he broke even at the $1600 i won it for off ebay

[butti]

Originally posted by jason86PRP250r
that 400ex with 250r motor is mine that you posted the link about. the frame is holding up great since it's a 87 trx250r motor and dioes not vibrate.

that would be the better way to do it since the bike frames are not counter balanced. $5,000 is crazy high priced for that swap.

the guy i bought it from said he broke even at the $1600 i won it for off ebay



i love your ride!!could you post or e-mail me some more detailed pics of your install?it looks like the man did a great job

a dirt bike motor would have been great because i could buy a whole dirt bike for what just a 250r motor will cost me but the quad motor def.looks the way to go.

oh well,...anybody want to trade a 400ex motor for a 250r ?motor:D

[DOHC]

Im lookin for a 250r engine for my 440ex also

[jason86PRP250r]

the pictures would not be that good since i did not get to wash it yet since i raced it a couple weeks ago at Line Mountian.

you can find stock 250r motors on ebay for around $500

[butti]

this project is ON now!! i picked up the motor a couple hrs. ago and its in great condition.its a rotax 257gs counterbalenced motor from a rebel star quad

this motor is 50hp stock and its fitted with a ported 265 cylinder!

i have everything here to run it ecept for a radiator and a carb needle.here are some pics of the victim and the motor.im gonna take it out one last time this w/e before i tear into it

[butti]

http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00885.jpg

http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00886.jpg


http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00887.jpg

[jsu101]

:muscle: :muscle: :muscle: :muscle: :muscle: :macho

[jsu101]

Well Butti and I worked on the ROTEX tonight and we got the motor in the hole and some of the motor mount done. We will get some pics tomorrow night and put them up. We have one major problem we have to work out . Just wanted to give everyone an update:D

[butti]

here ya go




http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00889.jpg

http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00888.jpg

[born2ride14]

Whats the problem ??? intake, swing arm,exhaust??

There is a company that uses every part off the 400ex except the motor and engine stuff. The put Honda 250r motos into a 400ex frame so when you need a part you get a 400ex part. I think they sell them for 4k brand new I cant remember the company

[butti]

everything is going smooth except the intake.:( gonna have to fabricate one that offsets to the right





http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00891.jpg

http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00890.jpg

[jsu101]

This motor is backwards to the 250r motor. Kickstart on the left side and chain on the right side. We worked on the intake tonight and the bottom motor mount and started the top mount. The rad will be here next week so we are in good shape.

[TheNewn]

Hell, im interested to how you deal with the Sprocket on the other side of the motor. Subscribed.

[jsu101]

Originally posted by TheNewn
Hell, im interested to how you deal with the Sprocket on the other side of the motor. Subscribed.

Flip the axle over:rolleyes:

[TheNewn]

Do you not have to weld something up to hold the break stay/break caliper in place?

The rear break isnt going to be in the way of the front sprocket at all?

[jsu101]

You have to cut and weld the brake stay. We will have pic of it later when we do that

[butti]

axle flipped,brakestay reversed

[Tecate]

SoOoo...IS IT DONE??? :D :D

[jsu101]

allmost. :D jsut a few odd ends to get done. should be done this week

[jsu101]

well we finished it tonight and it runs good got some jet to do to it. Butti will post up some pics

[butti]

here is a pic of it 90% mocked up.ill snap some more pics today in the daylight!

http://s118.photobucket.com/albums/o90/butti1977/?action=view&current=DSC00904.jpg

[rummerd]

What did you use for a pipe?

[quick5pnt0cobra]

What was this motor taken out of? A rebel star? I've never heard of it.

Anymore progress? How does it run?

[jsu101]

the motor was out of a rebal star quad and i think they are lone star now but not sure. atk also used the motor in there dirt bikes as a 256ls or lg cant remember. but this motor is a 265 just a bigger bore. it runs good need to do more jetting on it and every time we rejet it gets better

[born2ride14]

dud ei just noticed that you live like 20 min from me! i live in jax maybe we ciuld go ridin sometime

[jsu101]

yeah no prob just let me know




Originally posted by 300maniac
dud ei just noticed that you live like 20 min from me! i live in jax maybe we ciuld go ridin sometime

[jsu101]

yeah no prob just let me know




Originally posted by 300maniac
dud ei just noticed that you live like 20 min from me! i live in jax maybe we ciuld go ridin sometime

[butti]

Originally posted by 300maniac
dud ei just noticed that you live like 20 min from me! i live in jax maybe we ciuld go ridin sometime



you know any good spots up there.there arent too many places to ride around here anymore:(

[butti]

Originally posted by rummerd
What did you use for a pipe?




there are pics of the rebel star in this thread.we used the pipe that came with it but a 250r pipe could have been made to work the same

http://www.exriders.com/vbb/showthread.php?s=&threadid=310478

[born2ride14]

well my grand parent property and pax trax but my g- pa has a front loader and dirt wich = a nice little track

[Kickstarts-suck]

I live in macclenny (right by jacksonville) No where to ride :(

I just ride on the land around me.

I would love to see a video :devil:

[woodsracer144]

what the motor from? a sled? a bike?

[jsu101]

atk used the motor for a couple of years and they all so use it in carts