2.4 big rods or small

[hydrostream1]

I am building a river motor,using it on a small 17,action marine boat,turnng the motor no more than 7,500,would you use the small connecting rods or large ones? I think they are 625-5250,I am not drag racing the boat and relize the small rods are better for that.But am also looking for reliability,I am also planning on using the promarine pistons with these.

[STV_Keith]

Well, I've seen the threads that say if you keep it under 7500 rpm, the small rods will do.

Personally, with the money I invested in my motor, I didn't want ones that "would do", so I used the big rods. They are supposed to be noticeably slower accelerating than the small rods, but I didn't notice it.

Also, the big rods give peace of mind that they are not coming apart. Another thing, the bigger rod in the crank area means better stuffing - again a not-so-noticeable thing, but hell, it all adds up.