Announcement

Collapse
No announcement yet.

Hot Cam_timing tool

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Hot Cam_timing tool

    Hello,
    Need help. I'm about to do "hot cam swap" M50B25 NV, and I'm not sure about the timing in squares. I found several references and everywhere is only the timing with crank wheel and clock.

    Intake opens: 19 BTDC (9.5 degrees on the cam)
    Intake closes: 41 ABDC (20.5 degrees on the cam)

    Duration 19+41+180 = 240 degrees
    Lobe Center ((41-19)/2+90)= 101 degrees ATDC

    Exhaust opens: 35 BBDC (17.5 degrees on the cam)
    Exhaust closes:13 ATDC (6.5 degrees on the cam)

    Duration 35+13+180 = 228 degrees
    Lobe Center (35-13)/2+90= 101 degrees BTDC

    Timing for nonvanos intakecams
    Exhaust opens: 41 BBDC (20.5 degrees on the cam)
    Exhaust closes: 19 ATDC (9.5 degrees on the cam)

    Duration 41+19+180 =240 degrees
    Lobe Center (41-19)/2+90= 101 degrees BTDC)

    I want to make a template for the timing check. But I have a little problem with cam timing (green, blue, red) Do not know if I am right ????????????

    and cutting height in template ( orange color ). Want to make a tool before I open the motor.

    Can anyone help?

    Thank you

    Boun e30 (CZ)


    #2
    sorry - violet number is 13mm.....

    Comment

    Working...
    X