Repower with Suzuki 200? 20" Transom

djdixon1995

New member
Greetings,

Long time follower, first post. I rescued my Grandfather's 84 V20 Steplift, the boat I grew up with, a couple years ago when his camp got sold away. It was a pampered lake boat in Maine its whole life and now I run it in the Patuxent River with occasional trips into the Chesapeake Bay. I've done some tinkering with it... rebuilding the original lounge seat, electrical system, dash, rub rail, fuel tank, rod boxes, teak, etc. But otherwise, it's in fairly pristine shape for its age...decks and the transom are solid. I've reluctantly decided that the 84 OMC Crossflow 185 that's been on it since new has to go. When running well, it'll push the boat to 50 MPH...but those times have become too rare for it to be considered reliable...oh, and then there's the fuel consumption. The biggest off the shelf poly tank I could find to fit the cavity was 50 gals (to replace the original 60 gal aluminum tank that was compromised). That 185 will drink 50 gals without blinking an eye.

So, I intend to repower with a new 4 stroke. I'd like to get as close to the performance of the 185 as possible without making her too stern heavy. My local trusted machanic deals Suzukis and, to a lesser extent, Yamahas. My first thought was a Suzuki 140 based on the weight...within 20 lbs of the old 185. However, I just don't think I'll be happy with the performance. She's always been a bit of a sleeper and I'd like to keep it that way. Once you go to the big block Suzuki 4 cylinders, they all weigh the same...so I'm thinking the 200. That'll put me about 140 lbs heavier then the 185.

I have a 20" notched transom, two batteries aft, and the 50 gal fuel tank in the original aft belly location. I'd like to go with a 20" leg bolted directly to the transom if possible...no jack plate. My concern, apart from the usual self bailing issues, is that the motor will sit too low and get wet in the wrong places.

I'd rather not move the batteries forward but would consider it if it were a solution. I've also considered a 25" leg and jack plate but don't love that idea either. Finally, I'd save about 30 pounds with a Yamaha 200...but at quite a cost. I'd rather not build up the transom to 25" either. But what I want least of all is to buy a brand new 20" engine and wish I'd gone another route.

I intend to launch it with an extra 140 lbs in the motor well just to see how she sits in the water before I pull the trigger. But, is anyone out there running a Suzi big block 4 with this or a similar configuration? I'd love to hear what you think or any advice.

Thanks.
 
I had a 2003 DF140. These were my numbers on an 84 cuddy, 25" transom, with a hard top and enclosure.

3 blade 14x20 Suzuki prop
Cruises 30 mph @ ~3.5mpg
Top speed ~36mph heavy ...~39 mph very light

I ran in the ocean where going faster than 30mph in a 2000 pound boat was not possible very often anyways. I loved that motor.
Personally, I think it was the perfect motor for the price and weight.

Now I have brand new twin DF200APs on my Grady265. They are huge compared to a DF140. They are awesome motors.

I don't think I would put 20" motors on anything unless it was a lake boat.
I would look at this as an oppurtunity to replace the transom to a 25". Get the piece of mind knowing the transom is good before putting a $20k 200hp motor on it.

btw, I hear that they are coming out with DF140APs with fly by wire, digital gauges.
 
Thanks for the info and advice SkunkBoat. It may come to doing the transom work as you suggest. Also, maybe I should just reconsider the 140...your numbers are better than I expected. Any experience pulling skiers with that setup?

I have a teenager that weighs almost exactly the weight difference between the current engine and the dream engine. So an experimental launch this afternoon using him as walking ballast...I***8217;ll report back.
 
Thanks for the info and advice SkunkBoat. It may come to doing the transom work as you suggest. Also, maybe I should just reconsider the 140...your numbers are better than I expected. Any experience pulling skiers with that setup?

I have a teenager that weighs almost exactly the weight difference between the current engine and the dream engine. So an experimental launch this afternoon using him as walking ballast...I***8217;ll report back.

Didn't pull skiers but did pull kneeboards and tubes. I think it will pull skiers no problem
Here is some tubing video to give you a sense.
https://youtu.be/7kq83TXK4Y0
 
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Update

Well, I ended up going with a new Yamaha F200. It took a while because, as it turned out, the transom was a gonner. At some point, someone had removed the factory brass drain tube and slapped a threaded garbard drain plate on the outside. Sadly, they left the bare wood on the inside where the brass tube had been...so it rotted from the bottom up and the usual top down. The good news is that solved my 20” transom issue. So I have the yami installed on the new 25” transom and no jack plate required.

New performance question: I think I have it propped correctly with a stainless 14.25 x 19. I’m right at 50 mph at 6000 rpm trimmed way up. It cruises great at 40 mph/4000 rpm. However, I’m getting rough shifting and prop chatter at idle, very annoying. I’m told that an SDS prop is the answer but, naturally, they don’t come in 14.25 x 19. So, I’m thinking drop down to 18” pitch, or try a 13.75 x either 19 or 21. Anyone have thoughts/recommendations? Anyone running a similar rig. Btw its an ‘84 cuddy. Thanks!
 
Post some pics, sounds like a great set up

I know of a few people with Yamahas that hare having rough shifting , chatter and clunking when shifting. Most say it s the hub set up on newer Yamaha props.

Congrats on the new motor
 
good choice on getting the transom redone. What kind of prop are you running right now? Stainless? Aluminum? If you can find a 17 P mercury mirage prop, try it and see how it compares
 
Thanks guys. Running a stainless prop now. I’ll see if I can lay hands on a mirage prop and give it a try. Supposedly the Yamaha brand SDS hub cures the chatter problem but we’ll see. I sense some trial and error coming on. That’ll be a good reason to get out on any nice days that come along over the winter. I’ll try and upload some photos later today when I’m near my computer. They all turn out sideways using my phone. Operator error I’m sure...
 
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