Ok, so its obviously been forever since I updated. The good old FL583 project got pushed to the back of the garage while I got the bright idea to buy a house and flip it, in the worst real estate market in the country! Luckily, I was finally able to sell the house, and make a few bucks, so I'm back to attempting my Rotax in an FL350.
I've seen lude's build, and this won't be NEARLY as pretty. His is a marvel of enginering. This is more, Harbor Frieght lol. Nothing like cutting 1/4 in steel plate with an 18 dollar harbor frieght angle grinder. So hopefully these updates will show that you can build a fast buggy, on a budget. So far, I've still got less than 1500 into the build.
Ok, so here's what I've done so far. I bought just about every part ever suggested to me, realized most of it wasn't going to work, and ended up going the easy route. I have a 583 out of 91 Formula Plus. Basiclly its a 580 motor. I origionally bought a super BN single 44mm carb. It would have worked, but it didn't come with any of the throttle linkages or cables to match it to the oil injection. I tried to piece it together, but I didn't know what model seadoo used this carb. Luckily, my brother happen to grenade his 93 Skidoo XP, with a 580 in it. Soooooooo I stole his intake and carbs and air box lol. So now I can tune each cylinder, and I've got carbs that I know work. Plus I have all the linkages etc.
So on to the motor mount. I took a piece of 3/4 tube, welded a nut in either end, and put it between the brackets where the stock engine would normally mount. This gives me a place to attach the rear of my motor plate. Then I took a 12x12 piece of 1/4 steel plate, and figured out where I need to put my motor. When I mocked it up on my spare frame, it looked like I needed to cut the frame on both sides, but now, I have it so I only have to cut the frame on the pull start side. I'll end up filling that area back in with more 1/4 once things are settled in.
I ordered a set of motor mounts (basiclly just washers with rubber between them) for an older skidoo, where the motor bolted in from below. Their about a 1/2 inch thick. I'll use those between the bottom of the motor and the engine plate. I'm also using the snowmobile motor mounts on the front of the motor, also issolated by rubber bushings. And finally, I'll end up fabing brackets to conect the rear of the rotax to the trans, just like the stock set up.
Hopefully tomorrow I can drill out the plate and mount the motor. Then start running my wiring harness.