After that little hiccup it was time to check exact cam timing.
I don't have an adjustable came gear and I'm not sure of the accuracy of standard after market gear so wanted to know if I needed to get one.
Timing the cam gear is done by determining where the centre line of the inlet and exhaust sits compared to the crank shaft position and there are a couple of ways to get to the same result.
This was my way
I used a degree wheel attached to the crankshaft through the fan. Pointer on the lug where the crankcase splits you can see it on the right of the degree wheel.
I used dial gauges on no.1 piston (in the centre) and on no.1 inlet pushrod (dead in line with it).
Found exact top dead centre then loosened and rotated the degree wheel to line up zero deg with the pointer.
Rotated the engine by the fan till I had maximum lift on the pushrod.
The lobe centreline specifications that came with the camshaft were 106deg at 0.050". My dial gauge is metric so 1.25mm.
I rotated the engine backwards slightly past 1.25 down then back to exactly 1.25mm (gets rid of backlash) and noted the degrees wheel.
then rotated the engine forward to tdc and past till the dial gauge read 1.25mm and again noted the degrees.
Added the 2 degree numbers and divided by 2.
I repeated the whole process a number of time and came up with 105.5deg each time.
I think this is close enough.
Time to get on and build the rest of the engine
I don't have an adjustable came gear and I'm not sure of the accuracy of standard after market gear so wanted to know if I needed to get one.
Timing the cam gear is done by determining where the centre line of the inlet and exhaust sits compared to the crank shaft position and there are a couple of ways to get to the same result.
This was my way
I used a degree wheel attached to the crankshaft through the fan. Pointer on the lug where the crankcase splits you can see it on the right of the degree wheel.
I used dial gauges on no.1 piston (in the centre) and on no.1 inlet pushrod (dead in line with it).
Found exact top dead centre then loosened and rotated the degree wheel to line up zero deg with the pointer.
Rotated the engine by the fan till I had maximum lift on the pushrod.
The lobe centreline specifications that came with the camshaft were 106deg at 0.050". My dial gauge is metric so 1.25mm.
I rotated the engine backwards slightly past 1.25 down then back to exactly 1.25mm (gets rid of backlash) and noted the degrees wheel.
then rotated the engine forward to tdc and past till the dial gauge read 1.25mm and again noted the degrees.
Added the 2 degree numbers and divided by 2.
I repeated the whole process a number of time and came up with 105.5deg each time.
I think this is close enough.
Time to get on and build the rest of the engine