125-200cc will a wr 125 2007 engine fit into an sm 125 2007

Hi all firstly im new so hello to all.I have a husky sm 125 2007 model and im just wondering if a wr 125 engine will fit straight in? The wr engine i have is also an 2007.Or do they not fit? or would i need to mod anything? THX

They have different frames, you'd be whole lot better off converting a wr125 to sm spec, not just because of fitting, but also because of stress tolerances.

hi thx for info its just that i got a sm and the wr is a spare engin i got.

You wont be the last to think such an idea is a goer, you have already derestricted the sm and tuned to optimum?

No i have had this sm now for 5 months ive never rid it lol! i am finding it hard to get a repair manual for it.ive never had a husky before.i dont know if its been derestricted all i know its got a full dep pipe on it.but i think the mains are on the way out and aint got a clue where i can have it rebuilt.thats why i considerd the wr engine as ive got one that runs mint.that will have to be sold now lol.

Where are you?

im in dudley west midlands

You should have no problem finding a Husqvarna or BMW garage to get a service and report on your bike, they'll be able to tell you if your bike has been fully derestricted or not and, if it hasn't, do the work or supply the parts (mostly just jetting needles and slider - as you already have a 'proper' exhaust).

t

thx for the help

I would check the ignition the power valve actuation and the carburetor
the SM 125 I ve seen differ all in these components on the engine

for sure the WR converting to a SM would be my way to go (the SM doesn't have the same adjustments in the front fork either)

Robert-Jan

yes i see now it will not fit.thx