 Lap Cylinders into Head? Just Resurface Head?, Just clean and use CopperCoat? whattodo |
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| nebreitling |
 Feb 15 2005, 12:38 PM
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#1
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Member Emeritus  Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478  |
hey guys
about to head off to the machine shop for some spark plug repairs. this is on a hi-compression 2.0 with very few miles on it. Question: should i pull the cylinders and have them lapped into the heads? i'd rather spend money now than fuch with head leaks later... wouldn't this effectively decrease deck height, though, thus effecting compression? would i then need to reset the deck height afterwards? thanks (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif) n |
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| nebreitling |
Feb 15 2005, 12:42 PM
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#2
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
btw, i really don't want to pull the cylinders, etc... would just a little resurfacing do the trick?
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| skline |
Feb 15 2005, 01:04 PM
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#3
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Born to Drive Group: Members Posts: 7,910 Joined: 26-December 02 From: Costa Mesa, CA Member No.: 17 Region Association: Southern California |
No, Lapping the cylinders to the heads will make them mate better and seat correctly. No head gasket should be used. Nothing will change in your deck height. Just make sure you do each cylinder to the respective head slot. Then just reinstall them in the same order and torque them down and go. Easy as pie.
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| Cap'n Krusty |
Feb 15 2005, 03:14 PM
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#4
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
How're ya gonna hold those barrels perfectly perpendicular to the mating surface? Get the exact same amount of lapping in each hole? The machinists I use do a nice job of getting the head perfectly flat. I'm not gonna introduce a wild card into the mix. The Cap'n
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| scooter311 |
Feb 15 2005, 03:46 PM
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#5
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Member Group: Members Posts: 231 Joined: 22-October 04 From: Upstate NY Member No.: 2,986 |
I lapped mine in once, then then the heads ended up on and off so many times and eventually got flycut, so I put'em on anyway and they've been dandy ever since. Car has never run better actually.
Mind you, I monitored compression and leakdown every time - with nothing but positive results in my case at least. No gaskets, no goopy copper sealer, just good ol' flat surfaces. |
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