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Discussion Starter #1
Hey there,
I have a '66 with a 200 cid engine. I have been having trouble with some noise in the engine and I am trying to figure it out. when the car starts I have a rattle, it sounds like a nail being shaken around in a coffee can. within a couple of seconds its gone and the car sounds completly normal. I have recently rebuild the engine and stuck with stock equipement(cam, pistions, lifters valves) but I now have adjustable rocker arms and the corrosponding pushrods. the noise seems to stop just after the oil pressure is up(50-55psi) and is sounds fine. I have tried to adjust out the spinning in the pushrods while it isnt running and I just pulled of the valve cover again and I have noticed that some of the pushrods are spinning while others are not. while the engine is running. does this make any possibilties to the noise on start up? is this a bad thing? could the noise be from some thing else, starter perhaps? thank for you time

surveyboy

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It sounds like that it's your valves are rattling a little until the lifters are pumping up. You might want to go and adjust your valves. That should take care of the noise.

Rob
Member: Slightly Modified
66 coupe 302
66 fastback 351W
 
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Discussion Starter #3
spinning is good.
jimbo

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When you rebuilt the engine, did you label everything so that all the push rods, rockers went back in the EXACT same place? If not you've probably got something that's a little loose fitting. I'd go back through and readjust the valves.

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Discussion Starter #5
"I just pulled of the valve cover again and I have noticed that some of the pushrods are spinning while others are not."

Did you turn each piston over to TDC on the compression stroke following the firing order before you tried to spin each pushrod? If the cam is pushing that sucker up against the valve spring then you can bet your not going to be able to spin it. When I adjust mine I get it to where the pushrod is on the verge of not being able to spin and there is no more vertical movement, then add 1/2-3/4 turn to it. YOU MUST DO THIS ONLY WHEN THE VALVES ARE COMPLETELY CLOSED and the lifters are pumped up so run it a short while before hand.

John

[color:blue]'68 Coupe
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Of course they can spin.Theres nothing to keep them from spinning. Its when you take off the valve covers and intake and find the push rods shaped like the number "7". Thats when you have problems.
 
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