Flat top or domed
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,095
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From: Poolville
It all depends on the type of build you are doing which decides what you need... To classify as which is better than the other? Don't believe any one is, providing you stick with the same manufacturer when comparing..
Might I ask what you are building?
Might I ask what you are building?
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Banned
Joined: Dec 2017
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85 revolution performance kit, dome gives the higher compression, I had a brain fart, its been a while, thanks.
Grand HDF Member
Joined: Nov 2009
Posts: 4,315
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From: Tampa
I agree with 98, depends on the build. Sometimes if you go with domes you may need some head work to lower the CR back down to pump gas levels, but perhaps not depending on the height of the dome.
I personally believe in angled squish bands over domes. Much better flame propagation with a tighter combustion chamber while the squish creates turbulence to aid in a more complete combustion. Unfortunately they require a LOT more head work and custom pistons. The neat thing is if you have the S&S stroker crank for your EVO you can use Sportster 1200CC (and their variants) pistons as the pin height is within 25 thou of the Evo.
I personally believe in angled squish bands over domes. Much better flame propagation with a tighter combustion chamber while the squish creates turbulence to aid in a more complete combustion. Unfortunately they require a LOT more head work and custom pistons. The neat thing is if you have the S&S stroker crank for your EVO you can use Sportster 1200CC (and their variants) pistons as the pin height is within 25 thou of the Evo.
Last edited by Mattbastard; Jan 31, 2018 at 11:24 AM.
Seasoned HDF Member
Joined: Dec 2010
Posts: 6,849
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From: Florida
I like domes and here is why. I have found (from my last build) that I don't like when my heads are decked because it creates a problem with the intake manifold fit. I would rather have the chamber of the head cut out to fit desired compression by making the chamber bigger then to cut the head down
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