Cam timing

[projectgtir]

Ive looked at the gtirworkshopmanual but it doesnt say what the lobes are doing . And I couldnt find anything on this forum.

Ive set no1 piston tdc .

So on piston no1 no valves should be open when I insert both cams

On no1, Am I right in saying the inlet lobe should have just past the rocker arm, so has just finished opening the inlet valve .

On no1 , exhaust cam, the lobe should be just about to open the exhaust valve so just about to meet the rocker arm.

 

[pulsarboby]

yes your correct
the lobes of both cams will be horizontally opposed (facing outwards) to each other......you can also use marks on the sprockets to time the engine

 

[projectgtir]

thanks bob .

The workshop manual shows a pic of the sprocket marks ,as you'll obviously know but it looks so vague .