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Mach 1
Mach motor build dummy here.
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<blockquote data-quote="snakeraper11b" data-source="post: 13094522" data-attributes="member: 128473"><p>Edit: I skipped over your eaton swap part, so I updated my post with pistons better suited for that app.</p><p></p><p>Stock forged crank is fine to around 1500hp, rods are good, go with diamond pistons 3.572 / .020" over and King bearings. 17cc pistons will lower your compression way too much, in the low 8ish:1 areas. Coming from the stock mach compression at over 10:1 it will feel like a dog and be a huge downgrade in performance until you boost it whenever that is. Even then, something in the 9ish:1 area will perform well out of boost and allow plenty of boost on pump gas to have fun.</p><p></p><p>The combo below, with .036"x3.625" head gasket, 52 cc stock heads, block decked to .008" from the stock .012" will yield about a 9.1:1 compression. Great for your eaton application with reasonable psi and timing even on pump gas. If you plan on running a good amount of boost you may want to look into a ring set with a stainless top ring instead of a standard plasma moly. There are downsides to both, but the stainless top ring will put up with the abuse from a boosted application better most of the time. Lastly, I would upgrade to the H-13 .200" wall uncoated wrist pins while you're doing the build.</p><p></p><p><a href="http://www.excessiveracing.com/DRP-30002.aspx" target="_blank">http://www.excessiveracing.com/DRP-30002.aspx</a></p><p><a href="https://www.modmaxracing.com/product_p/kngcr889hp.htm" target="_blank">https://www.modmaxracing.com/product_p/kngcr889hp.htm</a></p><p><a href="http://www.modmaxracing.com/product_p/kngmb5283hp.htm" target="_blank">King HIGH PERFORMANCE Main Bearing Set ALUMINUM 4.6 Blocks</a></p></blockquote><p></p>
[QUOTE="snakeraper11b, post: 13094522, member: 128473"] Edit: I skipped over your eaton swap part, so I updated my post with pistons better suited for that app. Stock forged crank is fine to around 1500hp, rods are good, go with diamond pistons 3.572 / .020" over and King bearings. 17cc pistons will lower your compression way too much, in the low 8ish:1 areas. Coming from the stock mach compression at over 10:1 it will feel like a dog and be a huge downgrade in performance until you boost it whenever that is. Even then, something in the 9ish:1 area will perform well out of boost and allow plenty of boost on pump gas to have fun. The combo below, with .036"x3.625" head gasket, 52 cc stock heads, block decked to .008" from the stock .012" will yield about a 9.1:1 compression. Great for your eaton application with reasonable psi and timing even on pump gas. If you plan on running a good amount of boost you may want to look into a ring set with a stainless top ring instead of a standard plasma moly. There are downsides to both, but the stainless top ring will put up with the abuse from a boosted application better most of the time. Lastly, I would upgrade to the H-13 .200" wall uncoated wrist pins while you're doing the build. [url]http://www.excessiveracing.com/DRP-30002.aspx[/url] [url]https://www.modmaxracing.com/product_p/kngcr889hp.htm[/url] [url=http://www.modmaxracing.com/product_p/kngmb5283hp.htm]King HIGH PERFORMANCE Main Bearing Set ALUMINUM 4.6 Blocks[/url] [/QUOTE]
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