Hi bud, thanks for the reply! The right crankcase cover came from ebay seller jake1710 in the states used but in very low hour condition!. It cost me £79 to buy and a further £30 to have it posted then another £15 in import duty and an £8 parcelforce charge.
Unfunnily enough i am now waiting for the right crankcase from the same engine arriving from the same seller!
Boooooooooooooo hiiiiissssssssssssssssss i found a couple of hairline cracks at the sump plug
so the whole engine is getting oem bearings and seals to go with the new crankcase.
I have now bought bits for this bike from all over the planet and if you look up my (wifes) ebay username lilacshelly27 you will see most of my ebay purchases for this bike over the last 9 or 10 months!
Check all these sellers other items as you will find a huge amount of NOS parts and very nice condition parts from breakers mostly in the U.S. who specialise in CR250 and 500's
My top man in New Mexico ebay U.S. seller xxtoltecxx AKA Allen Shaw of the Deming Cycle Centre New Mexico has just recently taken over a honda dealership and has a load of NOS bits for the CR's, Hit him with part numbers and he will come up trumps for you
Do the odd ebay search for KS7 + KZ4 and other part number combo's and you might just get lucky.
I have found that running the usual searches through ebay is a bit useless as a lot of sellers i have bought from don't offer int'l shipping unless you ask so they don't show up on your ebay UK search!
The only way around this is opening ebay U.S. or ebay France etc while being signed out of ebay U.K.
I just found an NOS airbox lid still in the Honda bag on ebay France for £15 plus £12 postage ( very hard to find part )
Whenever i am running a search for a part i have CMSNL.COM open in one tab for their free fische access and part number info and in another tab have POWERSPORTSPLUS.COM open to cross reference the part number for multiple bike fitment of said part, This helps you be able to expand your search considerably!
If you haven't already found this combination for reference try it and it will save you a shed load of time in the long run!
Powersportsplus.com are U.S. based and have your right crankcase listed as available for around $150 + shipping but make sure you email or call for a physical stock check before commiting to buying from them.
I am going to compile a list of sellers i have bought from and post it up.
I also have ammassed quite a collection of spares including lots from an 88 donor bike i bought so if you need any parts just ask through my ebay username.
The link below will take you to my bikepics.com pages where i have 132 photos uploaded of work being done and parts purchased for the resto so check it out and hover over each pic or click the pic and scroll to the bottom for info on where it was sourced from.
If you need any advice or help please don't hesitate to ask or just give me a call on 07887 636 092!
Many thanks for the reply and best of luck with the rebuild.
P.S. i hope you have very deep pockets