Crossover vs. looper

[cddetelich]

I have a 1989 175 Johnson that is giving me all sorts of problems starting. I have a chance to pick up a much newer (1998) 150 Evinrude at a good price. Salesman tells me old engine is a "crossover" design, new engine is a 60 degree looper. He makes two claims: first, newer engine should actually move my boat better (although speed is not a primary concern of mine) and that newer engine will do much better concerning fuel consumption. I must admit that when I do get the older engine started it loves fuel, so this is a good selling point with me.
So, can somebody explain the differences between crossover and looper? Sounds to me like a difference in the induction systems. I also notice my old engine has 3 2 barrel carbs, and newer has 6 1 barrel carbs.Also, are the claims about power and fuel consumption valid?

 

[Dhadley]

Re: Crossover vs. looper

The claims are not only valid but understated. You're talking about 1950 technology (at best) vs. 1990's technology. You'll be totally amazed at the difference.

Looper vs crossflow has to do with the way the fuel is introduced into & across the cylinder. 90* vs 60* has to do with the positioning of the cylinders in relation to the crank centerline. The 60* powerhead is narrower.

If it's in the budget, don't think twice.