Re: EAB Heads & their Piston Reliefs - Is this right?
JJseery & Jack have it.
The EAB's on my big bad 286 were warped.....that's what those heads do. I did
some simple calculations and had the heads milled to my numbers. I ran 3 studs in each
bank and after blueing the domes and the valve heads I placed the head/s on the block .
With hand pressure on the head I spun the motor over then removed it. The
blueing told the story. Any areas of intereference showed up on the head as spots of blue. After about 6 or 8 hours of relieving per head all interference was gone. The
crushed thickness of a BEST head gasket is .040........and that is my clearance.
Don't be shocked if you see heavy piston to chamber contact at 3 o'clock on one bank and 9 o'clock on the other. Aluminum balls will never get you this close. Compression is the cheapest way to performance.
Charlie ny
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