Re: HELP!! Timing, cambelts and a very odd noise...
Right, I've had a closer look, things may be easier with a little table. Inlet and exhaust cams are marked from left to right starting at the pulleys. Same with pistons. I'm judging piston positions by looking down spark plug holes.
For inlet and exhaust camshafts:
F=Pointing towards the front of the car
B=Pointing towards the back of the car
Inlet: 1 2 3 4 5 6 7 8
D D B B F F U U
Exhaust: 1 2 3 4 5 6 7 8
U U F F B B D D
Pistons: 1 2 3 4
D U U D
So, am I correct in thinking that if the first two cams of the inlet manifold and the last two cams of the exhaust manifold are the only ones forcing valves open? And if so, does this rule out the possibiliy that valves are hitting the piston heads, as the first and last pistons are down, not up? I'm trying to think of other scenarios... would the difference in size between an oversize and normal head gasket be enough to make the valves foul? (I only found out about the oversize option after I'd bought the kit.) Can anyone think of another reason it would be difficult to turn the engine over? Must stress I'm still doing it by hand!
Should it be easy to turn, or should I expect some resistance.