Quote:
Originally Posted by R/TErnie
B18C1 and B18C5: 1.58:1
4G63 100mm stroke Evo motor... 1.5:1 This combo has been taken to over 1000whp. I've personally built parts and worked on one that made 750whp. I believe Kevin Kiggly runs a 100mm crankshaft in his 8 second DSM... so yeah it works.
It's not the R/S ratio.
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Very true and they are engines that fair quite well. Last I checked the fastest evo runs a longer than 1.75:1 rod ratio...the fastest standing mile evo runs an 88mm crank as well. It all really depends on what kind of powerband you're chasing.
With that being said, those 4G6x motors aren't being build with narrow stock rods or penny penching steel like the stock Mazda engines. I won't blame the rod ratio but I will blame the penny pinchers at corporate
....and yes, I can completely nerd it out on engine internals, it's my job and has been for many years. Treadstone, let me know when you guys want some real internals for this build and want to turn up the wick OR maybe I'll pop by the booth this year at PRI.