Build for Wifey - Xs650 donor frame engine considerations

[Jbone]

A budy of mine gave me a xs650 ('79 we think) rolling chassis a little while ago and its been sitting in the garage staring at me and begging me to bring it back to life. Since my wife needs a bike to ride I thought it'd be the perfect base for a build. Nice ergos, small and light.

Im curently on the look out for a xs650 engine but was wondering if any of the SR engines would also fit. Thinking that the 400 or 500 SR engine might be a bit better for her than a 650. Not that she couldn't handle it, just that I'll be building it for her to go out on rides with me and my BSA Royal Star 500....and we can't have her riding a faster bike than the ol' man now can we LOL!

All joking aside, does anyone know if any other engine would fit this frame without too much modification?

Regards,
J

 

[cxman]

wow look at the bunch you are asking that question of?????

my vote for not to much modding would be a pt6a turbine

light easy to get parts for a 1000 hp

exhaust might be a bit of an issue i suppose

 

[cxman]

kidding aside if its spoked wheels ect

why not throw a zuki savage thumper in there it would look cool

and run good and the motors can be found reasonably 300-450 for a good 650

 

[Jbone]

Funny guys.....lol! A zuki engine is fine, but my main concern is mounting it into the frame. I know with the proper motivation, time, money...etc etc... I could mount the V6 from my toyato Tacoma in there if I wanted to....but thats not what Im gunning for.
Im after info on which engines would be ...err....compatible (?) with the XS650 frame....i.e. same or similar mounting points. It's just a thought really...Im fine sticking with the 650 engine, just thought it'd be interesting to know what my options were...specially considering 650 engines seem to be kinda scares around these parts.

 

[SONICJK]

The SR engines are 1/2 the width of the XS and I doubt the mounts would line up at all.....

 

[AlphaDogChoppers]

a xs650 ('79 we think)

This tells me you don't even have a title. Why bother? Part it out and scrap it.