View Full Version : Frame conversons HELP!
balls2da-wall
08-09-2005, 12:42 PM
Alright I need a 400ex frame converted to fit a CRF450 motor my question is what are the best places to have it sent to and have this done and how much and how long will it take....thanks
0VER LAND 450R
08-09-2005, 04:09 PM
east coast atv. dave gibson did my friends 400 frame but he put a 450r motor in it. i dont think it took more than a month to have done. it came out real nice
balls2da-wall
08-09-2005, 06:27 PM
do you guys suggest a CRF450 motor over a 450R motor or does it make a difference?
TC426EX
08-09-2005, 06:53 PM
JB Racing is less than East Coast and they do great work, as does ATV Four Play. These are the 3 most commonly used companies for this conversion, so either one you choose will be quality
kyleschonert
08-09-2005, 08:27 PM
Id get the 450R motor b/c its internals were changed from the of the CRF motor to be ran in a quad frame. You'll still see a big diff. with teh CRF motor, but the 450R motor would be better. If you were gonna get a 450R motor, you should just sell your 400ex and buy a 450R. Itd prob be just as cheap. But if you can get a crf motor for cheap id do that.
balls2da-wall
08-09-2005, 08:43 PM
I have over 12grand invested in my 400ex thats why im doing this conversion because buying a brand new crf450 motor is much cheaper than loosing 8grand on selling my 400
selling my 400 to buy a 450R is just not practical...this is why the conversion is a better choice for me.
kyleschonert
08-09-2005, 08:44 PM
I agree. Now I would keep the EX. But yea, then I would buy either motor, if you can get your hands on a 450R motor id do that.
Toadz400
08-10-2005, 08:22 AM
Buy the CRF engine if you want a more powerful ride and the R engine if you want something that is going to be tame and reliable.
balls2da-wall
08-10-2005, 06:10 PM
im looking for a XC motor but if the CRF isnt reliable then,....
deathman53
08-10-2005, 06:28 PM
since when is a crf450r motor not reilable???? the crf would be better for a mx racer, get the 450r for a xc bike, they are far easier to restart when you stall them and also they don't have a tiny light flywheels like the crf motor, and crf motors can't use lights(stock). the crf motor is about 10 horses more powerfull, but in the woods, horsepower isn't always king, smooth controllable power is the key.
balls2da-wall
08-10-2005, 06:33 PM
Where can I find a 450R motor then? I know service honda had CRF450 kits with everything i need but i didnt see any 450R motors on there...would i be able to convert the CRF450 motor to have a larger flywheel? or should I just go for the 450R motor...I am an experianced racer i race in B-class and i shouldnt have a problem with stalling unless its real bad at it
balls2da-wall
08-10-2005, 08:45 PM
And does anyone know the actual pricing on the JB racing or Four Play conversions? I know East Coast charges 1000$
Ginxd00
08-10-2005, 09:24 PM
Originally posted by balls2da-wall
And does anyone know the actual pricing on the JB racing or Four Play conversions? I know East Coast charges 1000$
Call ATVfourplay ask for Tom 330-289-1423 he was making a price sheet for the conversions.
Toadz400
08-10-2005, 09:54 PM
Originally posted by deathman53
since when is a crf450r motor not reilable????
Compared to the 450R engine it's more unreliable. The 450R is designed for a quad with the heavier duty clutch and gears. I would just find a 450R engine and drop in a cam and add and exhaust. That is a good idea to put a 450R in a 400ex frame, I always loved the way my EX handled but wasn't fond of the 450R.
balls2da-wall
08-11-2005, 09:50 PM
Yeah im probably going to go with the 450R motor....I would rather sacrafice 10horses over losing reliability any day!!!Especially in the XC buisness:D
400exrider0004
08-11-2005, 11:21 PM
Yeah im probably going to go with the 450R motor....I would rather sacrafice 10horses over reliability any day!!!
Definately
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