Harc-pro are doing something like this and putting it into semi-production. Maybe. Except they are putting 4-strokes into an RS frame ... I think. There's a picture on my "pictures from my weekend" post. _________________ MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-
nsr wrote:What about putting in a CRF250R or CRF250X 4 stroke, does anyone think this can be put in a MC21?
What's the point? They will make less power and will no doubt weigh more... _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
does anyone know if someone has fitted a rd or rg 500 engine in a nsr.i knew 3 people years a go who fitted the 350 powervalve engine in to the rg 250,i know this was a common thing to do at the time.im not interested in fitting a 500 engine myself i just interested if someone had tried the rd or rg engine.
I'm just curious becuase Im thinking of going 4 stroke becuase i think its more reliable than 2. ALso something to due during the winter season here in Canada.
Go on put a crf450 lump in, 250 are not worth it. At the moment a few of my freinds use 450 for super moto and they are the nuts, wheelies everywere off the throttle etc, and the roll on responce is just a hoot.
I looked at putting a big lump in one of my frames years ago and it seemed a lot of work, I have a rg500 with a moddied frame now, plus my nsr's if the four stroke moto x lumps were as good then as they are now i would not of hesitated to put one in, cause ive gone through enough bloody nsr engines to last a lifetime.
Oh yeah you can get 490 kits for the crf's mucho torque!! and just think of that under seat pipe as well, oh yes..
a pover valve motor in an nsr frame. now i like the sound of that the yamagama never interested me, not a nice bike to look at the old gamma. but a nsr now thats more like it .may have to give that a go
How big will the 350 engine go out to? _________________ MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball
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