how hard is it to swap the cranks over? HELP!!

r1guy · Post by **r1guy** » Sat Mar 12, 2011 3:50 pm

Hi All,
Started work on the KR1S this afternoon, what i first thought was just going to be a swap the barrels and pistons over has now progressed into a new conrod required on the right hand cylinder due to it being snapped.....

Am wondering what my options are???

how hard is it to swap the crank over?? do i have to strip the gearbox out aswell????(don't fancey that much.....)

idea's on a postcard please

thanks

martin · Post by **martin** » Sat Mar 12, 2011 4:36 pm

i would do a swap with you with one of the bottom ends i have, plus cash.

and i will even do it for you with a cuppa while you wait

mj43 · Post by **mj43** » Sat Mar 12, 2011 4:36 pm

The KR is the easiest engine I have ever worked on.
I can if pushed get an engine out of the frame strip, replace crank and rebuild, put back in the frame in 2 hours.

Minimum required in the way of tools. Only special tool is an alternator puller.

If you haven't done it before allow a day - just remember no brute force is required if you are having to force something then you are doing it wrong.

r1guy · Post by **r1guy** » Sat Mar 12, 2011 4:45 pm

martin,
Have sent you a pm mate, sounds like its easy enough then.....

Thanks

SP_BOTT · Post by **SP_BOTT** » Sat Mar 12, 2011 5:09 pm

mj43 wrote:The KR is the easiest engine I have ever worked on.
I can if pushed get an engine out of the frame strip, replace crank and rebuild, put back in the frame in 2 hours.

Would you say (if you know) it's easier than an LC/YPVS engine, done loads of these and would be a nice suprise if a later engine was easier to work on?

martin · Post by **martin** » Sat Mar 12, 2011 5:27 pm

drop the bottom end and gaskets off with me and i will strip it and swap the cranks over.
cant do it in 2 hours , but i can do it.

JanBros · Post by **JanBros** » Sat Mar 12, 2011 6:13 pm

mj43 wrote:The KR is the easiest engine and bike I have ever worked on.