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Discussion Starter #1
Well, my 302 is ticking. It's not the lifters, or the rocker arms. I believe it's the main bearings. If so, how long do I have left?? I'm using 20w-50 if that makes a difference. I'm hoping this motor will last me till I finish my 351W project, but I doubt it, since I'm out of money, and work is slow!! Just curious!! Thanks!!

65 coupe 302
(rebuilding a 351W)
 

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Main bearings don't tick. Check to see if all spark plugs are tight, a loose one (Even a 1/4 turn) will allow some of the compresses charge in the cylinder to escape, and it sounds lick a tick.

68 GT500
68 1/2 CJ Coupe

MCA# 18519
 

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People have reported this before and it turns out it's just the normal fuel pump noise.. Do you have a mechanical fuel pump? It might be worth the money for you to buy one of those auto stethascopes from autozone and listen for where the noise is coming. Just keep away from the exhaust with that thing on!

See my 69 convertible and the VMF parking lot at: http://www.geocities.com/Bishir1/FrontPage.html
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mine gets a tick from the fuel pump.

Motorhead
 

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Possibilities...
Fuel pump
Exhaust leak
Valvetrain
Loose spark plug

Bearing noises run at crankshaft rpm, everything else runs at half that speed....

How's the oil pressure? Is the tick more or less noticeable as the engine heats up? Or the same?

Pat
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"lick a tick"? HA!

Thespazardman
 
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Discussion Starter #7
I would go with the exhaust leak theory also. I've been chasing the same noise from my 351C4V in my 70 Mach 1 and finally found it. It isn't that big a leak and wasn't that noticable at an idle, but became more pronounced at street speed. Take a small piece of hosing, fuel line will do fine and when the engine is idling, hold the hose up near the manifolds and listen for the leak. It works great. I loosened the manifold and moved it around and retightened, but still have the leak...the manifold musn't be perfectly flat in that area. I'm now considering using some high temp sealant as suggested in a past posting response.

"7TFord"
 
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