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Sunday, August 18, 2013
Saturday, August 17, 2013
Running again
With the head back on, I started to set the valves. This means turning the crankshaft until one valve of a cylinder opens completely, then set the one that is supposed to be closed. Here is some data I collected about the values and different procedures. After that, I bolted the injection back on.
Engine temp: cold
GT (standard)
Inlet: 0.28-0.33mm (0.20-0.25mm)
Outlet: 0.53-0.58mm (0.46-0.50mm)
Data from Vulcan Engines for a Kent 290 camshaft
in: 0.36mm
out: 0.46mm
Method “by cylinder”
When one valve is fully open, adjust the clearance on the other.
Engine temp: cold
GT (standard)
Inlet: 0.28-0.33mm (0.20-0.25mm)
Outlet: 0.53-0.58mm (0.46-0.50mm)
Data from Vulcan Engines for a Kent 290 camshaft
in: 0.36mm
out: 0.46mm
Method “by cylinder”
When one valve is fully open, adjust the clearance on the other.
Method “rule by nine”
if 1 and 6 open – set 8 and 3
if 4 and 2 open – set 5 and 7
if 8 and 3 open – set 1 and 6
if 5 and 7 open – set 4 and 2
if 1 and 6 open – set 8 and 3
if 4 and 2 open – set 5 and 7
if 8 and 3 open – set 1 and 6
if 5 and 7 open – set 4 and 2
Firing order = 1-2-4-3 (1 is opposite from
flywheel)
Order of valves from cylinder one (I =
inlet; O = outlet): I-O-O-I-I-O-O-I
As soon as it revved (filling coolant and oil first!), I checked the ignition advance with the strobe light, oil pressure was ok. But I will also check all the other settings before driving it again.
Cheers.
Tuesday, August 13, 2013
Biiiig exhaust gaskets
Compared with the normal gaskets between the exhaust manifold and the cylinderhead, those from Vulcan Engines are five times fatter. The other thing they do different is the fixing. Whereas originally stud bolts come out of from the head, the manifold is now fixed with Allen head bolts. Except for one (middle right) which I had to change for a hex head due to limited access.
Prior to assembly I recut the threads to prevent the new bolts from biting too much into the head.
Cheers.
Prior to assembly I recut the threads to prevent the new bolts from biting too much into the head.
Cheers.
Sunday, August 11, 2013
Been completely headless
The good thing loosing your head is when you get it back as new. New valve guides, valve seats cut three angles, facing took 0.12mm off, readily assembled. Of course ... new gasket!
A good idea is to check the TDC (top dead center) mark on the crank pulley. Use the book and respect the torque and order in which you tighten the head bolts.
Next are the tappets and the rocker shaft. Tighten evenly.
Enough for a summer Sunday morning...
Cheers.
A good idea is to check the TDC (top dead center) mark on the crank pulley. Use the book and respect the torque and order in which you tighten the head bolts.
Next are the tappets and the rocker shaft. Tighten evenly.
Enough for a summer Sunday morning...
Cheers.
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