1988 lt250r engine in a 1986 frame

[jjjcost]

how hard is it to do the swap?

[drewc87]

i would like to know also

[lt250racer]

This swap requires a bit of fabricating on your part. the exhaust on the 87+ engines Exits straight out the front, However on the 85-86 their is a metal support bar right there. So not only would you have to remove this, but then create new front mounts for the engine & also a lateral support for the frame (since you have just removed the previous support).
Also think about how your going to get the pipe to line up. Also the intake...

I would think that it is in your best interest to keep the engine it has in it. However, It has been done before.....

[quadzilla87]

all of that work you should just put the 500 in it
same amount of work
hers mine with a 500 you will have to do something like this

[NELSON]

I just did a swap like this only i put a blaster engine in a 86 lt250. parts for the lt are getting too expensive and to hard to come buy. pics of mine are in the custom bike section. wasnt to hard, if you own a pipe bender and welder!