I've not had reason to measure one. My 850 is just an old dumptruck engine.Hi Concours
Sorry read that about the 850, should have said so. I will measure the 750 head & see what I have. Maybe its the same! Birco casting. Just about to pack the parts of for aqua blasting & a look over by Peter at Seager Engineering.
I just measured my RH10 head with a depth micrometer and it came out to .123.I just went out and checked. I have a 750 head that has not been surfaced I've had since the late 1980's. It measures .120"-.123" (in some spots less) around the step. That said I'm using a cheap digital caliper and measuring it by hand it is easy to tilt the caliper enough to be off consistently. It is also possible that the machine work is not that precise. My surfaced head that I keep using for sentimental reasons measures .113"
Oh dear… tell us more…Thank you Dan
Mine reads a fraction less, so will get a skim. Unfortunately on the look out for another set of crankcases now!
Better to err on the side of caution Chris.Front crankcase stud, over the cam on the timing side. The whole piece has been welded, not a bad job but when you heat the case on the inside, it bubbles from under the weld. Cleaned it up & you can see a crack in the case. It also has a weld repair to the bottom of the case. Might be alright on the road but then again.
Just got the rear hub back (Triumph conical) from the welder. He's built up the sprocket mounts. It looks awful lol. Off to dress them back & try & get the sprocket mounting faces level.
Frames being coated this weekend. Telsport is making a new stem for the bottom yoke.
A fair bit of rob Peter to pay Paul is about to occur!
Namely my Mk3 Seeley it is also having a paint job frame tank & seat this summer, so I'm nicking the Commando Landsdowne forks from it. They are going to be replaced with Dommie length ones. Also I'm nicking the good race engine from the Rickman & hopefully this engine eventually will end up in it!
Front crankcase stud, over the cam on the timing side. The whole piece has been welded, not a bad job but when you heat the case on the inside, it bubbles from under the weld. Cleaned it up & you can see a crack in the case. It also has a weld repair to the bottom of the case. Might be alright on the road but then again.
Just got the rear hub back (Triumph conical) from the welder. He's built up the sprocket mounts. It looks awful lol. Off to dress them back & try & get the sprocket mounting faces level.
Frames being coated this weekend. Telsport is making a new stem for the bottom yoke.
A fair bit of rob Peter to pay Paul is about to occur!
Namely my Mk3 Seeley it is also having a paint job frame tank & seat this summer, so I'm nicking the Commando Landsdowne forks from it. They are going to be replaced with Dommie length ones. Also I'm nicking the good race engine from the Rickman & hopefully this engine eventually will end up in it!
I have a timing side 750 half available.(Herts, UK)Thank you Dan
Mine reads a fraction less, so will get a skim. Unfortunately on the look out for another set of crankcases now!