After posting for "finding the right TDC" here is a diagram of how it goes :



Each step here :










Any errors ?

 

with this diagram, "good" TDCs are easy to find :

Search for compression and check FT at the crank : you are at the "good" TDC for the front.
Turn 3/4 turn (270°): you feel another compression and check RT at the crank : you are at good TDC for the rear.

OR :
Search for compression and check RT at the crank : you are at the "good" TDC for the rear.
Turn 1 turn 1/4 : you feel another compression and check FT at the crank : you are at good TDC for the front.

Simple no ?

 

Or, you could just take off the valve cover.

 

Yep ! It works too :wink:
Don't you think it's the way that professional mechanics use to change CCTs ?

 

Yes, but changing CCT without removing cover is way faster, and to reinstall cover properly you need torque wrench and sealant if cam cover seal is not new...
Tried both ways back then and I prefer to do not touch cover....thou I used more dangerous methid of finding god TDC, so it's great to have those diagrams....