My home inspection of Speedmaster heads
Took some time to pin gauge the guides and mic the valve stems. Everything was very consistent, and looks good.
All guides were 0.3422-.3431 (0.342 on my + size pin gauge fit, .343 doesn't)
Measured all valves in four places, top and bottom, 90deg offset from each other (12/6 and 3/9) to check for taper and out of round (egg shaped)
All valves were round and straight within .0002, max measurements for each listed below
Intake:
0.3403
0.3405
0.3404
0.3406
Exhaust:
0.3406
0.3408
0.3404
0.3405
Took some time to pin gauge the guides and mic the valve stems. Everything was very consistent, and looks good.
All guides were 0.3422-.3431 (0.342 on my + size pin gauge fit, .343 doesn't)
Measured all valves in four places, top and bottom, 90deg offset from each other (12/6 and 3/9) to check for taper and out of round (egg shaped)
All valves were round and straight within .0002, max measurements for each listed below
Intake:
0.3403
0.3405
0.3404
0.3406
Exhaust:
0.3406
0.3408
0.3404
0.3405