Hello grandpaul,The red circled area isn't a large crack that's been welded, or is it?
(very typical crack/break location when a Commando lets go)
If you search in the forum , you will find people having problem with the cap end bolts touching the case in some area , so you need either to grind the case (where the bolts hits the case ) or grind the rod bolts ...........I have done it with a pair of steal rods with mk3 case , though with JS steal rods in 850 it's OK . I will find the post ............Does anyone have any experience purchasing and installing MAP rods?
Might be me overthinking, but I have started to consider saving for a set for peace of mind ....
I did some searching on the forum and didn't find much info.
All I know is my buddy’s dad swears by them and put them in just about all his British bikes.
I had read about some interference issues, but most seemed to be in older threads.I've got a set of new H beam connecting rods for my 850 BUT the cap and ARP bolts project further than stock actually scraping the inside of the crankcase at certain positions. It's been suggested to file the bolt heads to get sufficient clearance...but I don't appreciate the mod, possible loss...www.accessnorton.com
Great pictures - I will be pulling my 71 engine apart and you have given me plenty to check out as I go...I basically only have myself to blame if I find anything out of sorts ...although I am the second owner; it's been in my care for the last 42 yearsNever thought of it that way.... Yes, the XS has silver barrels. Might be nice to have one each of each colour.
Truthfully, when I think of a British motorcycle, I think of a black barrels.
I always stamp them with the point of the "V" facing the direction of rotation.