sharpeye Mike wrote:
The 30 Yamaha is a great motor and they are still expensive unless they're rough looking
Mike, I have had good success in getting the parts to complete my mod 30 6J8 Speedmaster motor. I don’t think this powerhead has the special oversized sleeves or pistons to increase the displacement to 35 cubic inches like the original mod C Yamahas. But I should be able to get 45 to 50 hp by upgrading.
- I got both a tiller and remote style 15 inch midsections
- I got a 30 15” gearcase and a 40 gearcase. The 40 gearcase allows for a wider selection of props.
- I got both 40D tohatsu and 40 Yamaha carbs. You open up the stock 30 intake and they bolt on. Plus 40 Yamaha reed cages.
- I got a single ram power trim 40 Yamaha clamp bracket assembly which has the much larger side brackets allowing for great height adjustment on the transom .
- I am checking out tuners...not sure what to do because there is a lot of opinions so I will leave it stock for now. Same is true with the cylinder head....billet head is available but most guys have found taking a few thousand off the stock head works just as well for the horsepower goal I am hoping for.
Why trying a tiller? They are an easy mount on a tin boat to start playing .