Caterpillar's 3126 and C7 engines are workhorse diesel engines that keep big machines running on punishing work sites, but ...
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These Guys Rotary Swapped Another Mazda Miata To PerfectionAfter paying $200 for the Miata, the team at Throtl cut it up and swapped in the 13B rotary engine from an RX-7 aiming for 500 hp.
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