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Cylinder head shave

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Old Mar 10, 2026 | 02:05 PM
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From: 9371 Lyn Marie Dr Ne
Cylinder head shave

I was curious if yall got anywhere with shaving the cylinder head down on a 4g94 I知 curious to do so and if it caused any problems, if I知 in the wrong place I apologize, Lmk
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Old Mar 11, 2026 | 09:46 AM
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From: WI
Define "get anywhere"? You can definitely get the head surfaced but what is the goal?
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Old Mar 16, 2026 | 01:40 PM
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If the head and block are shaved you disrupt the timing mark alignment used to install the belts. Because the cams centers move down and crank Center line doesn't move. You would be better off sourcing taller pistons to increase CR and only touch the head or block to make them flat.

High CR reduces the amount of boost you can run. If peak power is your goal bigger turbo will help more than CR. Balance of power might be helped with more low end from higher CR but peak power will suffer.

RS Motors could advise you better than me.
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Old Mar 23, 2026 | 07:49 AM
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From: 9371 Lyn Marie Dr Ne
Okay I definitely see now, not worth it, only reason I say is I plan on keeping N/A due to the fact I知 a auto trans but I know everyone on here recommends a turbo but would the head swap be worth it for what all must be redone, or is the turbo worth it on a auto trans even, i壇 imagine I壇 be better off building a separate engine and js doing a manny swap

edit: when I mean the head swap I知 referring to the mivec head

Last edited by slayer2009; Mar 23, 2026 at 07:54 AM.
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