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Intrepid 284 DF200 questions

Old 04-21-2021, 08:42 PM
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Default Intrepid 284 DF200 questions

Hello. I would like to seek yaíllís advice on engine height and props for a repower (plus any other suggestions).

Boat / motors: 1992 Intrepid 284. Repowering with new (I-4) Suzuki DF200ís, mechanical. Prior to this repower, I have run the boat since 2017 with 200 HPDIís and have a pretty good feel for what she likes / how sheís balanced / perf numbers for long trips with the HPDIís.

I have read as many of the threads as I can on this hull that have been repowered with these ĎZukes (one is in Miami, one in CT) and all the other participants in those threads (ox66 225ís, 250ís, etc.).

can you guys with experience in the matter let me know what height/prop you like? Any and all other advice would be appreciated as well. I think weíre going to start with one hole off the top and Suzuki ďwater gripĒ 3x14.75x23ís. I have two high speed pickups in the port side, bottom has no bottom paint, is probably average weight for this vintage 284, and has 12x12 tabs (I kinda want k-planes, but only for pushing it in the rough - sheís well balanced). 210 gal gas and I typically leave the dock with full tanks.

for reference, HPDIís with full tanks have 51+mph wot full of gas and last time we ran from Elbow (Bahamas) to West Palm my key-on to key-off numbers averaged 34.6kts (about 40mph) and 1.65+nmpg (1.9 statute) over 180nm. Periodically had 20kts wind and a good 2-3í chop, tabs down, not glass but not a slog. Heavy but not as overloaded as some of the stuff I read on this forum for you gulf coast overnight guys.

Thanks
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Old 04-22-2021, 03:16 AM
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I think Oscar did this same repower. I know he on the Intrepid owners club FB page.
Old 04-23-2021, 12:14 PM
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Originally Posted by arctic_f250 View Post
I think Oscar did this same repower. I know he on the Intrepid owners club FB page.
thanks, Iíll see if I can look him up.
Old 06-05-2021, 04:39 PM
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Just to update (and ask another question):

did the 20hr break in with the props and height described initially. Height seems good, though Iím likely underpropped (hit the limiter when trimmed with fuel fuel and two people). Otherwise, Iím quite happy with the engines and setup.

question: can I get some advice on engine toe? Not sure on terminology, but I think they need to be toed in a bit. Reason I say this is that, at 30kts and trimmed, the inboard of the antivent plates are above water but the outboard sides are under water. So it looks like the engines are pointed outboard a bit, relative to the flow of water coming off the transom.

Is this something I can do myself by just adjusting the toe bar? I have dual cylinder steering

i expect this will give a bit better economy/speed - is that right?

will this change the boatís balance on plane at all? Right now, itís quite stable at lower planing speeds. Before the repower, it porpoised a bit below 25kts, now it doesnít - despite these engines being 15-30lbs heavier. Could be a bunch of things (props, LU design, etc), just curious if this is also a characteristic of too much toe out. I like the stability, may be worth keeping them pointed out if thatís the cause.
Old 06-05-2021, 06:14 PM
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Hey man I had an Intrepid 26WA with twin 200s. The Suzuki 3 blades cavitated in any water that wasnít flat. I tried adding cup to the props- no help.

i dropped the motors to second to last hole down. That helped a little but still nothing. Thereís a guy on here called PropGods that told me to toe in 1/2Ē so I tried that... no joy.

finally went to Suzuki 4 blades. Bingo. Lost about 3-5mph on top end but zero cavitation and it was like she cruised on rails. I also liked being able to cruise in 1-2í seas at a slow cruise and line the sweet spot of the nose of the hull up to slice the waves.

Feel free to PM me with any questions. Good luck!
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Old 06-05-2021, 08:52 PM
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@elimnatr086 - thanks man, great post. I really like the layout of the wa, previous boat was the 23wa, kinda wish I had the 26/28 wa now given I have a 3yr old and a 1mo old. But... I have what I have.

sorry in advance for the 20 questions (and you may not remember): Did you have any handling / performance differences when you added the toe in? Did the cruising economy come down with the four blades, or was it just at the top end? What year were your Suzuki props / Do you know if they were the ďwater gripĒ props? I ask only because ďthe internetĒ says these watergrip props hook up better. But also, that the shape of them is the same as the older props and that the only difference is the hub. So itís conflicting info, but Iím hopeful they hook up better than the older Suzuki props. Hope in one hand, spit in the other, see which hand fills up first...

I havenít personally run the boat in any kind of sea since the repower. My dad did the break in (heís retired and has the time, but isnít super comfortable with outboards - doesnít trim them, for instance. Still runs the piss out of the boat for an 80yr old). He said he ran the boat in a nasty 20-25kts wind with a real 2í chop like youíd get on the Bahama Bank and the props held well. But he said that he could easily over trim them, ventilate, and have to back off the throttle (still on plane) to get them to hook up again.

I got the boat delivered to me three days ago and have only put an hour on it in calm conditions. I tried to break the props free (hard turns, over trimming) and found them fine (could break them free, but not in an unusually bad way / I could could keep them hooked up reasonably easily). But my concern is in a swell with a chop, like offshore, where itís easier to air the hull and partially air the props. I want them to hook back up when the hull comes back into the water. When I ran fast offshore with the prior engines, Iíd get the hull out of the water with some frequency but the props would never get totally out and I never had to adjust the throttle.

thanks again man. Also - great info on the zuke four blades - will go to those if this becomes a problem.
Old 06-06-2021, 05:26 AM
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I think Iím the CT guy youíre referring to. I put the engines as low as possible and am using 3x16x23 and donít have any issues. I also have wedges from bobs machine shop. Light load I reach in the low 50s wot. Normal load is 48-50mph wot. Effortless cruise at 35mph is around 4200-4300rpm - the boat feels perfect here.
Old 06-07-2021, 04:10 PM
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Originally Posted by Kokomo86 View Post
I think Iím the CT guy youíre referring to. I put the engines as low as possible and am using 3x16x23 and donít have any issues. I also have wedges from bobs machine shop. Light load I reach in the low 50s wot. Normal load is 48-50mph wot. Effortless cruise at 35mph is around 4200-4300rpm - the boat feels perfect here.
you are indeed! Good to know the props youíre using as well as the mounting hole. What rpm are you getting at wot? Agree the boat feels great at 35mph though Iím turning a couple more hundred rpm than you are (less pitch and diameter). Thanks, Iíll be looking for you in the river this summer.
Old 06-09-2021, 05:41 AM
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Originally Posted by griff12ga View Post
you are indeed! Good to know the props youíre using as well as the mounting hole. What rpm are you getting at wot? Agree the boat feels great at 35mph though Iím turning a couple more hundred rpm than you are (less pitch and diameter). Thanks, Iíll be looking for you in the river this summer.
Hey man! Didn't realize it was you. Very light and trimmed up, I'll hit 61-6200. I've hit the rev limiter before I'm just not sure what that number is but it should be around there. BTW, I'm getting a T top built so it'll look a little different going forward and may perform slightly worse. See you out there!
Old 06-10-2021, 08:59 AM
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Originally Posted by Kokomo86 View Post
Hey man! Didn't realize it was you. Very light and trimmed up, I'll hit 61-6200. I've hit the rev limiter before I'm just not sure what that number is but it should be around there. BTW, I'm getting a T top built so it'll look a little different going forward and may perform slightly worse. See you out there!
Yup, itís me! Boat looks the same, just black engines instead of grey.

for reference, with full 210gal and 400lbs of people I had both engines hit the limiter at a touch over 6200 (6230 or so). I only did it to verify whether they propped it correctly. Engines have about 25hrs, supposedly they loosen up from here but weíll see.

Iíll be looking for the t-top! Yours is a gorgeous boat.
Old 06-10-2021, 11:41 AM
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Have any of you guys actually put your 26/284 on a scale? I understand the specs say 2600lbs. Obviously it is more then that rigged.

I finally got mine on the water for the first time since I bought it and this thing surprises me with only 300hp. I opened her up on the way back to the ramp for a few seconds almost broke 50mph at 5700rpm. I think it was 49.5 to be exact on the gps. 4 people and a cooler, 1/4 tank maybe. So fairly light but none the less impressive I think.
Old 06-10-2021, 12:27 PM
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Interesting. I have the 284's younger brother, a 289WA, and just put on DF300AP's with 3x16x23 suzuki props. I get a lot of cavitation/air chewing getting up on plane and was wondering if any of you 284 owners are experiencing anything similar? My engines are on the middle mounting hole and seeing as my engines start blowing out when trimmed a bit higher than neutral, I am thinking they are too high.
Old 06-10-2021, 12:38 PM
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Originally Posted by Jonboater View Post
Have any of you guys actually put your 26/284 on a scale? I understand the specs say 2600lbs. Obviously it is more then that rigged.

I finally got mine on the water for the first time since I bought it and this thing surprises me with only 300hp. I opened her up on the way back to the ramp for a few seconds almost broke 50mph at 5700rpm. I think it was 49.5 to be exact on the gps. 4 people and a cooler, 1/4 tank maybe. So fairly light but none the less impressive I think.
that sounds like a great boat, what year? I believe the first one they made had a single 225.

havenít weighed mine. Tried to take it over a truck scale a few times but never had the time (I donít own a trailer, it only gets towed a couple of times per year).

a hauler had guessed itís around 5-6k loaded, no trailer. The published dry weight of 2600 is with literally nothing - no top, no steering, no tabs, no batteries (maybe one), no livewell / associated plumbing, no hinges on the hatches, the small console, no aux tank, etc. I think a lot of that stuff is now included in published boat weights for most production mfgís. I figure Iím at 4500lbs empty (just safety gear), then add people, 1260lbs fuel, 160lbs fresh water, and all the other crap that is put onto a boat.

it does lose a few mph and about 10% economy when I add 2500-3000 lbs to run to the Bahamas. Keeping it light, partial fuel load, single engine helps perf. My 246 was the same way.
Old 06-10-2021, 12:48 PM
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Originally Posted by Timeless View Post
Interesting. I have the 284's younger brother, a 289WA, and just put on DF300AP's with 3x16x23 suzuki props. I get a lot of cavitation/air chewing getting up on plane and was wondering if any of you 284 owners are experiencing anything similar? My engines are on the middle mounting hole and seeing as my engines start blowing out when trimmed a bit higher than neutral, I am thinking they are too high.
I think thatís more of a Suzuki LU /prop issue. Our bottoms are totally unrelated, yours is a step hull designed by michael peters and I think mine is a Jim Wynn formula f233 derivative (no step, of course).

scuttlebutt is that the Suzukiís run down a hole or two vs a merc or Yamaha, and a four blad helps. But... not sure how true that all is. I repowered a 246 wa in 2013 with a Suzuki df300 and researched that issue back then, but itís fuzzy.

I would expect youíll get it dialed in though. I like that 289waís layout, there was one with a dive door next to me last summer and it was sweet.

i havenít run these df200ís in anything rough yet, so far the bite of the wheels seems fine and Iím at the same hole as the prior yamaha HPDIís. But I half expect them to lose grip in the rough stuff and will have to adjust from there. Iíll also say - the yamahas could not break loose, I could trim incredibly high, or could air the entire hull without them fully breaking loose - it was great offshore in 2-3 at 30-35kts. These Suzukiís will lose grip with too
much trim and I have to back off the throttle a bit to get them hooked up again. Kokomo is running his a hole or two down a d has more prop than I do (though he has a bracket, mines a eurotransom, so not sure if the holes are relevant to actual engine height)
Old 06-10-2021, 02:36 PM
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Originally Posted by griff12ga View Post
that sounds like a great boat, what year? I believe the first one they made had a single 225.

havenít weighed mine. Tried to take it over a truck scale a few times but never had the time (I donít own a trailer, it only gets towed a couple of times per year).

a hauler had guessed itís around 5-6k loaded, no trailer. The published dry weight of 2600 is with literally nothing - no top, no steering, no tabs, no batteries (maybe one), no livewell / associated plumbing, no hinges on the hatches, the small console, no aux tank, etc. I think a lot of that stuff is now included in published boat weights for most production mfgís. I figure Iím at 4500lbs empty (just safety gear), then add people, 1260lbs fuel, 160lbs fresh water, and all the other crap that is put onto a boat.

it does lose a few mph and about 10% economy when I add 2500-3000 lbs to run to the Bahamas. Keeping it light, partial fuel load, single engine helps perf. My 246 was the same way.
How did you guess?

I bought it from Loys last October (great guy by the way). The Marine Installer's Rant: The first Intrepid power boat, Loys Charbonnet, and the "Checkered Demon"
There are a few typos. It is a 1987. I don't think Yamaha ever made a 220?
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Old 06-11-2021, 06:43 AM
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Originally Posted by griff12ga View Post
I think thatís more of a Suzuki LU /prop issue. Our bottoms are totally unrelated, yours is a step hull designed by michael peters and I think mine is a Jim Wynn formula f233 derivative (no step, of course).

scuttlebutt is that the Suzukiís run down a hole or two vs a merc or Yamaha, and a four blad helps. But... not sure how true that all is. I repowered a 246 wa in 2013 with a Suzuki df300 and researched that issue back then, but itís fuzzy.

I would expect youíll get it dialed in though. I like that 289waís layout, there was one with a dive door next to me last summer and it was sweet.

i havenít run these df200ís in anything rough yet, so far the bite of the wheels seems fine and Iím at the same hole as the prior yamaha HPDIís. But I half expect them to lose grip in the rough stuff and will have to adjust from there. Iíll also say - the yamahas could not break loose, I could trim incredibly high, or could air the entire hull without them fully breaking loose - it was great offshore in 2-3 at 30-35kts. These Suzukiís will lose grip with too
much trim and I have to back off the throttle a bit to get them hooked up again. Kokomo is running his a hole or two down a d has more prop than I do (though he has a bracket, mines a eurotransom, so not sure if the holes are relevant to actual engine height)
Whoops. I didn't realize the 284's didn't have a stepped hull!
Old 06-14-2021, 03:08 PM
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Originally Posted by Jonboater View Post
How did you guess?

I bought it from Loys last October (great guy by the way). The Marine Installer's Rant: The first Intrepid power boat, Loys Charbonnet, and the "Checkered Demon"
There are a few typos. It is a 1987. I don't think Yamaha ever made a 220?
thatís awesome, I saw the ad a while back, the attention to detail on how that boat is set up is really something. You should start a thread on it. Also - very cool article, I hadnít seen that before.

I would guess your boat is the lightest out there - howís it run?

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