HELP ! Cams phase how do....

[natalefr]

Good morning
How do I align the cams for good timing? There is a special procedure ?
Thanks for help

 

[stevehuckss396]

This is the setup steps for the V8. Is this what you are looking for?


Install camshaft
Install entire gear train.
Install degree wheel on crankshaft. (cheap plastic Office Max wheel will do)
Indicate #1 piston to top dead center.
Set pointer to zero degrees.
Rotate crank CCW 109 degrees.
Indicate #1 exhaust lobe to top dead center. (use distributor to turn cam)
Tighten set screw in cam gear.

 

[natalefr]

Thanks Steve
I found in internet (see images)
I can print it, stick it on a piece of plastic or metal and then use it for phasing

 

[natalefr]

This is the setup steps for the V8. Is this what you are looking for?


Install camshaft
Install entire gear train.
Install degree wheel on crankshaft. (cheap plastic Office Max wheel will do)
Indicate #1 piston to top dead center.
Set pointer to zero degrees.
Rotate crank CCW 109 degrees.
Indicate #1 exhaust lobe to top dead center. (use distributor to turn cam)
Tighten set screw in cam gear.

Ok for exaust lobe and for suction lobe ?

 

[stevehuckss396]

Yes if you have 110 degrees lobe seperation. If not the 109 is not good. Use your lobe separation as a basis. Advancing and retarding the cam timing can affect peak torque and hp. Not a big deal in a model engine.

 

[natalefr]

Yes if you have 110 degrees lobe seperation. If not the 109 is not good. Use your lobe separation as a basis. Advancing and retarding the cam timing can affect peak torque and hp. Not a big deal in a model engine.

Then...
Install exaust lobe at 110° then rotate ccw more 110° and install suction lobe ?
CCW in front of the cam disk ?
Tks

 

[stevehuckss396]

Your exhaust lobe should be fully open at 110 degrees before top center and the intake lobe should be fully open at 110 degrees after top center.

If your. Cam is 100 degrees lobe seperation then set to 100 before and 100 after.

If the lobes are 110 degrees apart on the cam then it would take 220 degrees of crankshaft rotation to get from center of one lobe to the other. 110 before - 110 after

 

[natalefr]

Your exhaust lobe should be fully open at 110 degrees before top center and the intake lobe should be fully open at 110 degrees after top center.....

In the Upshur engine project you have 102 ° between the lobes then 51° before the TDC for the exhaust and 51° after the TDC for suctionis.... is right?