Re: Correct Crankshaft for 1956 RDE-18

[chris-p]

I just restored 2 ’56 30hp powerheads and put 302530 cranks in both of them. Thing is, I cannot remember if I swapped in different connecting rods when doing this. As we know, you can always use superseded numbers, but you cannot always go BACKWARDS with them in years.

For Rods, the following is true:

RD-10 through RD-17R, RDE-16 through RDE-17R use the 375767 Rod (These are the 25hp Motors)

Then the….

RD, RDE, RJE 18 through 19C, RDS-20, RD-21, and RDS-21 use the 377272 Rod (These are the 30and 35hp motors)

So I think, while sitting here eating my dinner, that you can swap the 302530 crank between any of the 25/30/35hp motors, but if you use it on the 25hp, you may also need to swap out the connecting rods as well. Just my initial guess. After I eat ill go down and actually look at the parts.