Topic: Are there CB750 K1-K6 Frame Physical Differences??

[newday777]

  I also have a k2 with a replacement frame. Its owner was a guy we knew for years, he didn't mention the frame replacement when my brother bought the bike. I have two unstamped engines also, they could combine to make a real enigma.
  I haven't found stamps that match the Honda font. A friend has Harley stamps but I haven't looked at them yet. The open top 4 is a tough one, as is the 9 and the segmented 0.

I have a K3 with a replacement frame.
The PO was a little vague about why it was replaced, he said it was backed into by a road grader but he had no explanation as to why the vin was changed.
It is stamped with a completely non-Honda number that fortunately matches the title.

Some states require a Rebuit title and they have their own vin assigned by the state upon inspection by a LEO.

[CycleRanger]

I have a K3 with a replacement frame.
The PO was a little vague about why it was replaced, he said it was backed into by a road grader but he had no explanation as to why the vin was changed.
It is stamped with a completely non-Honda number that fortunately matches the title.

Some states require a Rebuilt title and they have their own vin assigned by the state upon inspection by a LEO.

Yeah I kinda figured that as well, especially with the "TEX" prefix. Since I had no issues with the DMV I didn't spend a lot of thought on it. 
I figured the rebuild was why it had a set of rust-free HM341's that are worth more than I paid for the bike!

[C317414]

  I also have a k2 with a replacement frame. Its owner was a guy we knew for years, he didn't mention the frame replacement when my brother bought the bike. I have two unstamped engines also, they could combine to make a real enigma.
  I haven't found stamps that match the Honda font. A friend has Harley stamps but I haven't looked at them yet. The open top 4 is a tough one, as is the 9 and the segmented 0.

I have a K3 with a replacement frame.
The PO was a little vague about why it was replaced, he said it was backed into by a road grader but he had no explanation as to why the vin was changed.
It is stamped with a completely non-Honda number that fortunately matches the title.

At least it's stamped in the correct location.  In California the Highway Patrol insists on placing the tag with the new number on a front down-tube of the frame.