I don’t get it what i got from reading the head installation is the two studs were for locating the gasket
and once your gasket is in place you put tool number 1 and the dowel to locate the head once it is in place you remove the two studs and the head will stay in place and not move held in place by dowel and locating tool number 1 so you can put the head bolts and rocker assembly without anything moving
Now if i use the studs to place my gasket lower my head on it i will have to remove the studs to bolt the head and rocker assembly witch means the head will only have one locating dowel and nothing to prevent it from moving out of alignment
What am i missing i don’t get it
Yep, it can be confusing at first, but you missed a step - install the hollow dowel in place before you fit the gasket.
Consider this:
With a head installation, we are actually aligning three things - block, gasket and head.
Think of the installation as a two step process.
In the first step, we align the gasket with the block utilising the hollow dowel and the studs to determine correct location.
In the second step, the studs merely guide the head down to locate onto the hollow dowel and the alignment tool.
Without the studs in place, it'd be very easy for the head to accidentally nudge the rubber seal out of position, so do this part slowly & carefully.
It should be reasonably foolproof.
As JB says, it's important that the dizzy drive and the dizzy itself are properly aligned.
What's often not mentioned is that the alignment procedure also ensures the tappets are correctly orientated with respect to their cam lobes.
