Show Posts
1
CB750 / Engine and frame numbers
« on: January 26, 2025, 03:12:16 PM »
I've got a horrible feeling I've wandered into a minefield with this one but fingers in ears - here goes.
My F2 was imported but the NOVA has gone walk about and having read about the updates the F2 engine received compared to the earlier K's, I'm keen to know how to check which country / model / year the frame and engine numbers were allocated or where I can go to research that. I may have to get another engine for it so I need to know if the guts of the F2 engine (cylinder head aside) can be accommodated by earlier crankcases and barrels? I understand the F2 frame was raked out a little more than say the K7 / F1 frames ? How was the extra compression ratio obtained with the F2? Domed pistons or thinner head gasket? This forum has already put me straight on the compatibility of the cam carriers from earlier heads (thank you)
Engine Number is CB750E 2600237 (could be 1 on the end instead of 7)
Frame Number is CB750F 2107695
At your mercy Martin
My F2 was imported but the NOVA has gone walk about and having read about the updates the F2 engine received compared to the earlier K's, I'm keen to know how to check which country / model / year the frame and engine numbers were allocated or where I can go to research that. I may have to get another engine for it so I need to know if the guts of the F2 engine (cylinder head aside) can be accommodated by earlier crankcases and barrels? I understand the F2 frame was raked out a little more than say the K7 / F1 frames ? How was the extra compression ratio obtained with the F2? Domed pistons or thinner head gasket? This forum has already put me straight on the compatibility of the cam carriers from earlier heads (thank you)
Engine Number is CB750E 2600237 (could be 1 on the end instead of 7)
Frame Number is CB750F 2107695
At your mercy Martin
