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Old 04-23-2013, 04:51 AM   #20
wisebag02
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Join Date: Nov 2012
Fan#: 106740
Location: Flushing, MI
What I Drive: 2002 ZTS 5-speed

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Well, I've found a shop near me that can shave .020 off my zetec head. Using the formula from the compression ratio thread, I came up with 10.15CR up from the stock 9.6. I'd be happy enough with that- I want to be able to save a little $ still run 89 octane if I want.

And the guy at the shop said I don't have to take the valves out. As long as the cams are out and valves are closed, it wouldn't be a problem. He will mill it, then use a diamond wheel to put on a finish better than 30Ra. I still did something goofy when prepping though: I put a layer of white lithium grease in the crevices around the valves just in case. Also put tape over the ports and installed an old set of spark plugs to keep chips out of there too.

All for $75. I'll keep you guys posted and hopefully have some pics of before & after.
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'02 ZTS 5-spd, Volant CAI, CFM 65mm TB, Autolite coppercore, Steeda wires, SVT Header, 2.25" Magnaflow catback, SVT suspension, poly bushings, Steeda tri-ax short throw, 17" Enkei, Tom's tune
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