"Right,
You need to find TDC of the crank, i always do it while the head is off. You need to place a DTI guage on No1 Piston and rock the crank back and forth until you reach the mid-point of the dwell angle, this is your `ZERO` point and is what your point needs to be at on you timing disc.
With the head etc all back assembled and fitted to the engine, fit your cambelt as normal (with your vernier pully of course set to STD settings)
Then,
You need to place the dti guage ontop of No1 Inlet valve and turn the engine over by hand until the guage comes to a stop, you then take the degree reading from your timing disc on the crank.
Then, turn the crank over slowly by hand again until the guage begins to move again, again take the reading from the crank disc.
If you take these two figures (e.g 115+121) and divide by 2, this gives you the cam timing (inlet valve fully open), in this case 118, if the value specified by the cam manufacturer is 114, then your cam is out by 4 degrees. This is where your vernier comes into play. You must slacken the bolts and alter your vernier by the correct amount so when you repeat this process, the two figures added together then divided by 2 is 114 degrees
I would advise that you always use a SOLID follower to do this as hydraulics creep back in under the spring pressure causing the DTI guage to move on its own. I always mark the verniers position once correct by scribing a line or drilling an pegging."
Alright mate,
was just reading this to time up the engine,
just want clarify a few points,
"With the head etc all back assembled and fitted to the engine, fit your cambelt as normal (with your vernier pully of course set to STD settings)"
when you say this, where is the cam position? valve 1 inlet at full lift? as surely it would make a difference where it would be when taking crank degree?
also
"You need to place the dti guage ontop of No1 Inlet valve and turn the engine over by hand until the guage comes to a stop"
When you say gauge comes to stop, is that full lift?
so need to take the crank position at valve 1 full lift and when its fully back, take the two readings divide by 2, and that should give the cam timing, and then fine adjust with vernier pulley?
cheers for your help
martin
