2013-05-05 Engine Rebuild

FjRay stopped by on the way to the Gathering of the Clans, 2013, and picked up a box o' parts to rebuild a Honda Xr600 Engine.
Just thought you might be interested to see what the guts of a 600cc air cooled Honda looks like, circa 1987.

Back in the day, when I turned 30, I started MX, just for fun, with the Over the Hill Gang. All serious competitors ran 2-stroke based motobikes, but I was in L O V E with 4-stroke engine and so purchased and bought a Horst Leitner inspired state of the art 4-stroke motobike. 

I raced that bike for 3+ years, and fought reliability issues w/ 2nd gear and had to split cases and rebuild about every 5th race weekend or so. 
Translation, I had lots of parts. 

Restoring that bike, I found a used transplant engine.. but always wanted to get the hot-rod engine back together, although slightly de-tuned for reliability. The parts you see below are from that 'era' and some/most are high dollar shit and/or NOS. Sure am glad I have some of those parts now - they are unobtainable.

I really look forward to Ray completing this project engine and having it back in the ATK - now street licensed, as a reliable, fun, dual sport machine.

I'm not going to add much text to pix.. so just enjoy if so inclined.. 

Oil pump rotors.

Wrist pin.. it's toast.

Got manuals?

Tranny

x

Well, that's it. 
I'm beat-down tired and this will have to do for now.

-d