Engine milling maths

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yellow rose said

They will work with any other block IF the deck heights are the same. Seriously? WTF?

I’ll give you an example and the numbers are rough because it’s been awhile since I milled my block, but it’s close.

To get the deck of my piston out of the deck .038, to get the CR I wanted I had to mill (again IIRC) .080 off the deck of the block.

So now, I screw up heads by milling the intake face of the head the amount needed to make an intake manifold fit it.

Now, I’m sick of those heads, so I put them for sale on FABO. And you buy them. And your block has only been milled...IDK...let’s say just .010 to clean it up. And you THINK any intake is going to drop right on? If you do, you are bat **** crazy.

That’s why you don’t mill the heads. Intakes manifolds and intake manifold gaskets are much cheaper than heads.

Come on, get real.

Click to expand...

That's a very plausible situation....if you're YOU trying to dodge the ball.... lmao WHO IN THE HECK MILLS THE BLOCK DECK .080 TO GET A PISTON WHERE YOU WANT IT?! BUY THE RIGHT/CUSTOM PISTON...SAME MONEY AFTER .080 OFF EACH DECK AND THE CHINA WALL, CAUSE THATS HOW MUCH YOU'RE MILLING AT THAT RATE.
You made up the perfect storm to enforce your approach.. but that's one that's completely unique to your approach. I do agree, mostly, brand to brand and old era vs new..no 2 intakes are the same u less off the same run. Close enough to work at least in that case.
OP isn't, nor I, nor they ...nor them or their cousins buddies uncle... are milling .080 off the block. But hey to play along... i pose a variable to your example... the intake happens to be vintage and cannot be replaced ..so milling it isnt an option....so you're buying pistons, like you probably should have anyways.