Re: Cross Flow vs. Loop Charged
Bert,<br /><br />The Crossflow OMC's were simply the technology they had at the time. They stuck with it for a long time simply because they had the manufacturing tooling to build them and they were relatively inexpensive to build.<br /><br />The looper technology came out in the late/mid 60's with the 3 cylinder-now a 70 hp. It was a natural progression to the loop technology for other engines.<br /><br />The crossflow was a very reliable design as is the loop technology. Each had their own minor operation differences, noises, etc.<br /><br />The loop is more efficient.<br /><br />I am restoring a Rude cross 90. I've owned many of the cross v-4's and some loopers. Horsepower/horsepower, they all generate their rated hp. The loop just adds some low end grunt.