Re: timing marks

Posted by Hobo,NC on April 03, 2006 at 17:19:32 from (151.213.82.184):

In Reply to: timing marks posted by FarmerDawn on April 03, 2006 at 17:03:25:

Fer git the inner mark it izz a index mark to fit the dist. Drive gear to the shaft. Take time and align the outer mark to the outer mark on the crank gear and lets see were # 1 piston izz. It you still have the valves in it check and see iffin you kin find TDC # 1 my way.
An old trick to see if valve timing is right on or (on the rock) would be to remove the head or lifter cover and bring #1 cyl up to compression stroke. While you are rotating the engine coming up on #1 TDC, #4 should be on overlap exhaust valve closing, intake valve opening) on the rock move the crank either way and a valve will move. This should happen right on TDC #1. If a valve on #4 is wide open or doing nothing at all, the valve timing is off... weather it's the cam gear . crank, gear or key way, broken cam, etc. The reason # 4 is the cyl in question is because that is the "middle" cyl in the firing order 1-2-4-3. The "middle cyl should always be in overlap (on the rock). for instance, on a chevy the firing order is 1-8-4-3-6-5-7-2, so if we wanted to see if the valve timing was off we would look at cyl# 6 to see if it was on overlap rolling the engine over to #1 TDC. It should overlap right at #1 TDC at 0 degrees. This izz E-Zee to do and you should be able to figger this out, if so then you kin master find'in TDC on most enny engine No timing marks needed. Also you will see the crank turns two times to make the cam turn one time. Hope this helps

Replies:

• Re: timing marks FarmerDawn 18:05:46 04/03/06 (2)
  • Re: timing marks Hobo,NC 18:29:17 04/03/06 (1)
    • Re: timing marks FarmerDawn 18:46:41 04/03/06 (0)
• Re: timing marks TheOldHokie 17:34:16 04/03/06 (1)
  • Re: timing marks FarmerDawn 17:42:43 04/03/06 (0)

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