TurboBanshee420

I've been looking for info on putting a rotary in a boat and found jack squat!!! has anyone seen this done before? except that loon on youtube with a 20b turbo in pretty much the same boat as mine.... Holla if ya know!!! anywho..... I found atkins rotary but the plate will only fit non-mercruiser drives. I have a alpha gen 2 1994. I might be the first to do it! which sux...

Eville140

All I know is you better buy some good oars to go along with it

idiot-stick

you got the parts in front of you so you'd probably know a lot better than us. Build some mounts and an adapter plate/rig and do it to it.

imburne

Would be fun. But dont forget those rotaries can be unreliable at times. I wouldent want to be stranded out to sea.

cberman

I've always heard ---- about rotaries, and was kinda apprehensive to buy one because of it, but mine runs fine. Leaks a ---- ton of oil, but thats no big deal...just keep a buncha supertech in the car at all times. I don't know if I'd pick a rotary to throw in a boat though. I think I'd be looking for something cheaper with more easily accessible parts

jinxy

putting an engine in a boat is ------- simple, expecially a jet boat.. get a jet prop, fiberglass that ---- in, add some metal mounts, weld up a shaft, get a close tollerence ware ring because 4 strokes lose all of their low end on a 2 stoke prop setup. cake work.


I wouldn't even think of trying something like that and keeping it out board.

kamilk69

turbo what you got, and if the boat is bear, V8 or V6 twin turbo setup.

stillnoturbo

Just weld some fins on the flywheel and your set.

TurboBanshee420

right.... I won't need any paddles.... maybe a helmet and some clean undies.. .

If you want to see what I got it's a scarab sprint 18 1994... It came with a 3.0l merc 4cyl. I/O alpha gen2...

I got a 12A from a 82' rx-7... Parts are very cheap!!!! I'm looking at a set of matched stage 3 race rotors with 3mm apex seals. I'm gunna port the ---- out of it and run a TBI set-up from a late 80's camero. I'm just not sure if I can get a mateing plate for my drive.

3.0l merc engine = 631 lbs / 140hp (new)
1.2l mazda 12A rotary = 164 lbs / 108hp (at the wheels 2 weeks ago w/81k miles)

between the weight loss and the extra power I think that little ---- will haul ***!!!! Besides I have a whole year to prepare the project. I'm gunna try to smoke the motor that's in there in the mean time...

Slo_crx1

Peripheral port ftw on old-school 12a's. Look into that or a bridge-port. My old shop used to have a 81 rx-7 12a as the boss's fun toy, peripheral port work and a nice set of down-draft cabs, slammed out almost 300hp at the wheels with a 17k rev limit. Idle was set at 4500 rpm and sounded like a chainsaw. I wish I could've found out what exactly he did to that motor, but the port work was all he'd tell me