Your timing could not have been better
I just finished doing all the research because I had to replace my teleflex steering.
Here's the deal...
The "3-Turn" rotary SS132 is rated for engines up to 4 cylinder. The "4 turns" ss147 is for larger engines. HOWEVER, considering that your 130hp is one of the LARGEST 4 cylinders on the market, you should go with the ss147 "4-turns" system. As a matter of fact, I bet your 130hp 4 cylinder might even weigh within a few pounds of the 150hp 6 cylinder.
The lower gear ratio of the "4 turn" system makes the engine feel much lighter and easier to turn. There is very little sacrifice with the extra turn unless you have a racing boat.
The other advantage is that if you ever decide to upgrade to a larger engine, you won't have to change the steering all over again.
I just finished doing all the research because I had to replace my teleflex steering.
Here's the deal...
The "3-Turn" rotary SS132 is rated for engines up to 4 cylinder. The "4 turns" ss147 is for larger engines. HOWEVER, considering that your 130hp is one of the LARGEST 4 cylinders on the market, you should go with the ss147 "4-turns" system. As a matter of fact, I bet your 130hp 4 cylinder might even weigh within a few pounds of the 150hp 6 cylinder.
The lower gear ratio of the "4 turn" system makes the engine feel much lighter and easier to turn. There is very little sacrifice with the extra turn unless you have a racing boat.
The other advantage is that if you ever decide to upgrade to a larger engine, you won't have to change the steering all over again.