Engine / Camshaft identification
Posted: Thu Aug 29, 2019 8:55 pm
Hi
The service manual gives cam to follower clearances and for all engines the inlets are 5-7 thou but for the exhaust side there is a difference between engines. 6-8 thou for engines before 9952 and 9-11 for engines 9952 and later.
Problem is I'm not sure what that number relates to:-
Which one correlates to the clearance engine cutover number? I'd assume 6815 but need to be sure. I measured my clearances and found all inlet valves at 5 thou and exhaust valves at 9 (cyl 1), 11 (cyl 2), 8 (cyl 3) and 11 (cyl 4).
Also, about my cams. they have two grooves on their sprocket mounts and markings as follows:
What does this tell you? Standard Big Valve cams or something special?
[Edit: According to this thread viewtopic.php?f=39&t=16829 they are definitely Sprint cams as the double groove is the deciding factor. But A and C seems odd.]
Finally, the head. It has GX71 stamped at the rear above the clutch cover, upside down and N stamped into a raised disk in front of cyl. 1's spark plug. Does it mean anything?
[Edit: The head ID numbers are cast in a hard to see location. I'll get out a dentist's mirror and try to read them off..]
Thanks.. back to the dashboard now..
The service manual gives cam to follower clearances and for all engines the inlets are 5-7 thou but for the exhaust side there is a difference between engines. 6-8 thou for engines before 9952 and 9-11 for engines 9952 and later.
Problem is I'm not sure what that number relates to:-
- The body plate says the engine is P1288 07
- The block has the ID 701M6015BA cast into it
- Some other marks on the block: 2J28, B-A, L
Which one correlates to the clearance engine cutover number? I'd assume 6815 but need to be sure. I measured my clearances and found all inlet valves at 5 thou and exhaust valves at 9 (cyl 1), 11 (cyl 2), 8 (cyl 3) and 11 (cyl 4).
Also, about my cams. they have two grooves on their sprocket mounts and markings as follows:
- Exhaust cam: B26E351 and C
- Inlet cam: B26E351, 13.9, A and MC23929
What does this tell you? Standard Big Valve cams or something special?
[Edit: According to this thread viewtopic.php?f=39&t=16829 they are definitely Sprint cams as the double groove is the deciding factor. But A and C seems odd.]
Finally, the head. It has GX71 stamped at the rear above the clutch cover, upside down and N stamped into a raised disk in front of cyl. 1's spark plug. Does it mean anything?
[Edit: The head ID numbers are cast in a hard to see location. I'll get out a dentist's mirror and try to read them off..]
Thanks.. back to the dashboard now..