I've had numerous guys contact me lately about old ironhead cylinder heads they found...and they think they're old Branch heads...and they're not.
All the Branch heads I've seen have very polished ports, razor thin seats, surface ground rocker and head gasket surfaces (to get them perfectly parallel) and these numbers stamped near the intake ports (on the bottom).
....otherwise they look stock from the outside.
The early 900 Sportster Branch heads are not as common as the 1000cc heads.
These pipes are small diameter 1 1/2".... I guess back in the day, the factory felt the K Model 750cc side valves worked best with these smaller diameter headers? Similar sized to the ports, etc. I always like the big, free flowing straight pipes, but so far, this thing seems extra responsive and hopefully it will help bring back some low end to this thing . . ? Factory stock early Sportster muffler. It's got a set of -60R KR heads on it, and I resleeved the cylinders, new valves, guides, etc. The Delorto PHM38 is my new carb-of-choice (if you don't want to run an M53 Linkert). I haven't really rode it around yet, so I'm sure I'll have some tuning issues coming up. Hopefully not - is always nice ! I added my set of -60 aluminum wheels (I'd been saving for who know what?) and figured I may as well start using some of this stuff.... One thing is for sure, H-D made some pretty neat bikes back with the Ks and early Sportsters. Some of the neatest lookin' if done right.
I bought these years ago outside, on a beautiful summer day in Anamosa at a vintage swap meet. I just thought they were so cool. I like to sell crap to fund my other projects, so I put 'em up for sale. Now they're off to Japan ! I've sold more stuff to the Japanese. Iron Sportster parts, panhead parts, entire motorcycles . . . It used to kinda piss me off they were buying all our American heritage...but after gettin' to know some guys that come to Davenport and chat on-line....I realize how much they dig these vintage Harleys(and Chevelles) as much as we do - and it's ok with me now. It's going to a good place. Sometimes guys are just weird.
I took the drain plug out, and I thought it was empty??? Huh? What the heck? Oh, there it is - all 4 quarts of oil took about 6 hours to drain. A small little string of oil just kept on and on near the end. No lie !
Now I got this thing for a "crusty" early ironhead swingarm bike - with a slightly over stock or springer front end. Short rear fender (maybe with a steel tail-light hiked up?), peanut tank, flaking chrome, vintage seat, maybe a painted frame . . . A bike you wouldn't worry about leaving outside covered with tarp - with a log chain around it. Never wash it (wouldn't want to rinse the grease out). We've had this 1970 ironhead engine with peeling chrome that would make a good mill....