cam position

G

georgecook

Member
I have noted that there are a couple of feeds regarding the position of the camshaft when checking the timing. With the EP pin on the flywheel in position, one feed indicates that the rearmost cam lobe must be pointing skywards( valve open) and others as well as the manual indicate that number 2 valve from the front should be closed. Do these relate to the same cam shaft position? ...regards georgecook
 
georgecook said:
I have noted that there are a couple of feeds regarding the position of the camshaft when checking the timing. With the EP pin on the flywheel in position, one feed indicates that the rearmost cam lobe must be pointing skywards( valve open) and others as well as the manual indicate that number 2 valve from the front should be closed. Do these relate to the same cam shaft position? ...regards georgecook
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The rearmost lobe will be upright when the no2 lobe is fully downwards, so you can look at either according to your preference. You have your "valve open" and "valve closed" the wrong way around. I use the rear one as the no2 lobe is always swimming in oil.
 
Despite carrying out a number of compression tests and a leak down test with acceptable but not brilliant results, I decided to remove the head to check the condition of the valves .After removing the head I used 10mm threaded bar to make the long bolts to hold the cam shaft carrier in position. This enabled me to turn the camshaft while still in its normal position still bolted to the head but on the bench.
When turning the camshaft, there is a loud "plopping" noise as the cam lobe leaves the tappets which appears to be caused by the valve spring pushing the tapper back into position. This occurs each time the cam lobes leave the tappets. Is this noise normal or is it caused by " sticky " springs or valve guides or am I missing something....georgecook
 
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