Home › Forum › Ask A Member › Differences between ’50’s era 30, 35 and 40 hp big twins? › Re: Differences between ’50’s era 30, 35 and 40 hp big twins?
Great info guys. MUCH appreciated!
This is a long term project and I’m not in a hurry. My thinking is spend the next yr or so collecting donor motors to be able to combine the pile into two complete, as in identical as possible motors.
In process using biggest carbs, tightest heads, best pistons etc.
Think "restofication" and not restoration. I’ve owned the hull for a yr and been watching for motors since.
Problem has been location of donor motors. I’m by Cincy Ohio so of course I find one motor in Michigan and another in Cleveland!
Annndddd, one will be a 30 and one will be 35 or 40.
If I could find what I wanted, I’d probably buy two 40’s w/the later era plastic cowlings, double wall mids and bolt the powerheads to a pair of 30/35 mids w/the clam shell cowlings.
I raced kneel downs for 9 yrs (’76 – ’84), built my own boats/motors and have continued w/the go fast gene to this day w/hot rodding V-6 OMC’s on light/fast (100 mph+) boats so this will need to run too.
W/the frustration of motor shopping I even considered buying twin recent era 40/50 hp OMC’s and grafting on ’50’s era cowlings. That would give me power trim, better props etc.
Wouldn’t be the same though.
So, pull start, 30 -40’s and probably own it forever.
W/a 200 lb hull weight, it should run good.
As to both being RH rotation, that’s the way they did it back then and I’m OK w/that. One of my dads first pleasure boats was a plywood 18′ w/twin, 1953/1954 25’s.
Also, I bought a 24′ twin outboard Sonic yrs ago and before I repowered/restored it, both motors were RH rotation and I couldn’t even tell.