Quick history lesson, I lent a running DR600 out and it came back not running and with a now ex-mate.
1985 DR600 that was in good working order-

Then got lent out and returned with engine internals looking like this-


After a slow parts gathering and assembling the engine is back together-
Head assembly with R/D Ti valve spring kit-

Wiseco +3mm piston, necessary due to bore damage-

Assembled head in background, new balance chain-

The engine has been completed for some time now, but this is the only pic I can find-

Do you really want the spec?
+3mm rebore and Wiseco 97mm piston (620cc)
Joy #209 race grind cam
R/D Ti top valve set
Ported head
Polished and relieved rockers
Heavy duty clutch springs
Keihin FCR39 carb
Headers still to be made to adapted HRC design including reverse cone and Remus BSB ti silencer.
I had a little piece together with some parts in the shed-

The SR500 tank got chopped about-

tap bungs fitted-

and a new filler bung fitted and then primed-


I regret priming the tank, and wish I'd just shellac'd the underside of the modified tank. Still, can't dwell on things.
I tried a few cheeky piece togethers-

and then sort of lost interest until my mate Al dropped the new yoke off.
Been back out tonight after sourcing a new top head bearing and things are rolling again...

Tank colour is Ferguson Stoneleigh grey, but may change. Not sure. I am very much feeling a brown saddle though.
http://shedbrewed.blogspot.com/ for more updates when they happen, and other mutterings.