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Old 01-15-2014, 09:27 AM   #1
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When the engine is at top dead center TDC, & the cams are properly allocated, all cam followers are on the base circle of the cams. All valves are seated.

This is why if the engine will not be started for a month or more you should put engine at TDC to unload valve springs.
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Old 01-15-2014, 01:35 PM   #2
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Originally Posted by BYprodriver View Post
When the engine is at top dead center TDC, & the cams are properly allocated, all cam followers are on the base circle of the cams. All valves are seated.

This is why if the engine will not be started for a month or more you should put engine at TDC to unload valve springs.
I can understand that for number one... but what about cylinder 4 when 1 is at TDC?

lets say the Firing Order is 1-6-2-4-3-5 would it not stand to reason that the number 4 is at btdc and sucking in air with full lift? maybe I'm just reading too much into it.
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Old 01-15-2014, 01:47 PM   #3
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I think it's the gas, the gas is bad. Definitely the Gas. It's all bad.
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Old 01-15-2014, 04:43 PM   #4
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I think it's the gas, the gas is bad. Definitely the Gas. It's all bad.
It's all good except the gas, and the valve timimg which soon will be. I'll mix the old gas with new and burn it in an old lawnmower. The smoke should kill mosquitos. What is good is that everyone on this string is learning (sadly from my mistake, I prefer to learn from others) or teaching. I'm about halfway getting the engine out to correctly time the valves. Then I'll spin it up again, and who knows?, it might start. Then it's on to the windows - and all the grounds were tight.
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Old 01-17-2014, 08:08 AM   #5
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I can understand that for number one... but what about cylinder 4 when 1 is at TDC?

lets say the Firing Order is 1-6-2-4-3-5 would it not stand to reason that the number 4 is at btdc and sucking in air with full lift? maybe I'm just reading too much into it.
That is the firing order but you have to take into account the cam opening & closing specs. You would have to rig up a degree wheel to determine when max lift occurs.
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Old 01-17-2014, 04:28 PM   #6
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Engine is back out.
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