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Old 09-15-2013, 04:00 AM   #18
amc49
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Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

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Valve springs don't make noise, if they did then broken and motor about to blow up. The tappet clearance gets loose to make noise just like someone else already said. I find it humorous that someone who thinks the springs make noise also talks about the buzz words 'port and polish' and pretty much lost as no one pretty much does that any more. Polishing almost always LOSES horsepower and pretty much wasted on a multiport injected motor anyway. Porting can do the same, I've seen far more hack jobs in porting that cost power than ones that made it. You really need a flowbench to port properly. Why another expert around here advocates not touching the head at all as far as porting, and for d-mn good reason.
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