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Re: super A tappet adjustment
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Posted by Wayne Swenson on February 05, 2004 at 11:16:25 from (66.228.233.217):
In Reply to: super A tappet adjustment posted by mikeinWA on February 05, 2004 at 08:36:41:
An easy way to locate TDC (top dead center)compression # 1 is to watch the valves for #1 cylinder. Just as the exhaust valve closes and the intake valve starts to open, the piston should be at TDC at the end of the exhaust stroke. Now turn the crankshaft exactly 1 revolution and you will have the piston at TDC compression and you should be able to find your indexing marks very close to that point.
This method will allow you to adjust the valves if you turn the crankshaft 1/2 revolution to adjust the valves for each cylinder in the firing order.
For example, find #1 cylinder TDC and adjust both valves; turn crankshaft 1/2 turn and adjust #3 cylinder valves; turn crankshaft 1/2 turn and adjust #4 cylinder valves; turn crankshaft 1/2 turn and adjust #2 cylinder valves. Turn crank 1/2 turn and you are back at #1 TDC and can set the ignition timing close enough that the engine will start.
Timing by "ear" is OK when you get enough experience but locating the TDC mark is the best way for a less experienced person.
I have explained this to hundreds of mechanics students in the past; it is still so enjoyable to hear an engine start up the first time after a rebuild!
Enjoy.....E-mail me ifyou have further questions.
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