Performance question for 21' boat

Upgrading to a 21' boat. A couple I'm looking at have 200hp. What kind of general performance should I expect? I know most 21's have 225 or 250's. Just sold my 2000 zx185 with a 150 vmax. It would run 60 with full tournament load.
Thanks!

That would depend on what boat brand you are talking about and how heavy a "tournament load" is. I would say for most regular bass boats NO. 21ft with a 200
Why would you want a 21ft boat with only a 200 hp motor on it, unless you don't mind slower speeds, then it would be ok.

A 21 ft boat with a 200 hp motor on it would not be an upgrade in my opinion. It is a long underpowered boat unless it is a boat built for speed, but even then I would not do that.

It will run like a 85 Ford F-150 with clogged carbs.

Don’t be mad, I said it.

If you are shopping now, don’t settle for an underpowered boat. A 21ft with 200 hp is gonna be a slug.

Lot of 21 ft. center consoles and alum. boats with 200 HP., do just fine. Now the Bass Boat Fiber Glass series need that 250 HP to get the performance.

There can be quite a weight difference between various 21' hulls by themselves. Remember you're going to want bigger batteries, so even more weight there. The trolling motor on that 21' probably needs to be 36V, so that may mean a 4th battery in the boat (over and above bigger batteries), and the TM will weigh a bit more. Getting a hydraulic jackplate? It will have a larger fuel tank. When you fill that, well, there's MORE weight. How many people have you found who had bought a 21' boat who said "Ya know, I just put too much HP on that boat."

I like the 85 Ford reference; it's probably accurate. You better ride in the hull you're getting with a 200 & a load before you commit to that. Lots of room for bad decisions not easily fixed.

Never ridden in an Allison, have ya

you are looking at a terrible terrible hole shot and probably a 55mph boat with 2 people, full gas tanks, and full live wells. you will be disappointed with a 200hp in a 21 ft. glass boat. as mentioned above it will be a slug. good luck

Not an Allison that was underpowered, no. Have you?

I'd say 225 minimum. You can get plenty of hole shot by putting a 19 or 21 pitch prop on it but will not get the top end. A 24v Xi5 is plenty good on my 21 foot Triton even in the wind. Lithium batteries would be needed with a 200hp to save weight. I would not fill the gas tank over half way either and would not put Talons or power poles on it. My 21' Triton with a 225 Opti will run 74 if the lake is smooth enough so unless you don't care about the top speed I would hold out for at least a 225.

older 20' rangers were rated for 245 but most came with 200's. Mine runs bout 55 with a full tournament load. I really don't have a problem with that because after I get on plane I slow down to about 35.

Had a friend many moons ago with a XB2002 w/ 200 Promax. Ran mid 80's with ease. He swapped it out shortly after to a 260EFI and it would nudge 100 light and 90+ with 2 and gear.

I have a 21ft with a 200 black max its an old heavy Cajun Runs 57 with 3 adults. Once I get on plane I dial it back to 35, like stated above Im not there to race, just fish. Plus I save on gas that way. Theres a lot of pleasure boaters on Alan Henry and it sucks to take a big wake @ WOT. Really its a personnel preference

I KNOW THAT'S RIGHT !! LOL!!!

Most under powered bass boats don't have a very strong resale value for that reason alone.
I personally would never purchase a under powered boat of any sort.

I had a 20' with a 200 on it that I just sold, my hole shot blew and top speed was around 62.

My personal opinion, get the max rating for the boat allows.

tmd, keep in mind the OP was talking center-console boats, most of which are far heavier than an ally, and have a deeper V. No comparison. I'm sure Steez was commenting from that perspective, not the Ally that has nothing to do with this thread.

My wife drives my Ranger faster than 35! If lake conditions permit, she seems good at 50-60.

tmd, keep in mind the OP was talking center-console boats, most of which are far heavier than an ally, and have a deeper V. No comparison. I'm sure Steez was commenting from that perspective, not the Ally that has nothing to do with this thread.[/qu

Where does the OP say anything about center console?

My comment was a feeble attempt at humor

Gotcha. Steez can be a good target sometimes too, LOL.

200 sho can be bumped up to 335 or 450, 335 takes a simple ecm reprogram and 450 needs a nizpro supercharger.

200 2 stroke can be taken to 250 - 300 in most cases for less than a rebuild.

And a gearcase if you want to last more then 10 minutes

Why is that??

there is no p performance on a 21 ft boat with a 200 on it. it should be priced much cheaper because when you go to sell it wont bring as much if you don't care how fast it runs or how it will lift the boat go for it.

The stock gearcase cant handle the torque of the NIZPRO 450 super charger. Also stock gearcase design prone to blowout at speeds over 90ish.

While I would prefer to have max rated hp for resale purposes and top end speed a 200 3+liter will have a great holeshot.I remember back in the day when BASS had the 150 limit, there were guys running 20' boats that'd jump on plane and run 60-62 mph. I ran a 19'6" 1730# hull with a 2.5L 150efi jumped on plane jut fine and would run 63 all day long with two guys (Me 365# at the time) and 50 gallons fuel. I see lots of misinformation on this thread.

Guess it depends on what you expect. If it has the right prop on it should get on plane easy just won’t be a speed demon.
J. D

I don't think the OP answered one of the first and most important questions here. What hull are we talking about?

Huge difference in a 21' Gambler and a 21' Skeeter with a 200 on it.

There's so much that goes along with an underpowered boat.

J

get the torquemaster conversion for the yammajamma and go haul some a$$, no one said it would be cheap.

I am always a good target, if you set your sights high enough.

I own one. Ask Ken.
A 20'3" Allison was 69 to 70 loaded and 74 in the winter with one person and tackle.
With 200 its an mid 80's boat, loaded.



The 21 is only going to run in the upper 70's with a 200 but I don't think the question was about the lightest boat, just a normal bass boat.

So you're saying you're abnormal

All of the companies who used to do programming have quit after the EPA sent them a letter.
Simon Motorsports quit advertising their upgrades and I think Hydrotec has also quit their upgrades.
I don't know about Nizpro since they are an Aussie company.

Pretty much the same thing happened in the diesel truck market. Dang EPA is a buzz kill

An under powered boat will absolutely get you by... but that one time you get caught up in a storm or some giant rollers you will be praying to the lord for those 50 extra horses.

Boy ain't that the truth

Or how about that annoying ramp when you’re loaded extra heavily? You have to pull the trailer up to keep the nose from ducking the roller but you don’t have the power to push yourself up all of the way. You have to do the boat ramp shuffle back and forth from boat to truck to get the darn thing loaded.

Save another few grand and get the big motor. As mentioned, most 21s NEED that extra umph.

Yes the Allison is an anomaly for sure. They hold world speed records in nearly every horsepower class.

However for the purpose of this exercise I think the OP should steer clear of a 200 on a 21' boat.

On that boat it would be ok because it was built for speed.

Where did he ask about a center console boat? I guess I missed that part on his original question.

He didn't ever say anything about a center console. But flippin doesn't like to respond when you point out he is wrong

He did not mention CC. I carried that over by mistake with switching back and forth between two threads. (The other involved a CC boat.) My earlier comments on this thread did NOT mention or assume CC, but the gist still stands - almost any bass boat is heavier than an Allison. Many of them are also deeper draft.

Hey Dub-dub, go shove it somewhere else. I don't avoid any thread. In fact, why don't you go compare how many I've helped to how many you've done the same for? I was busy on multiple threads, and carried the CC thing over on ONE comment on this thread by mistake. Jumping someone is the best you can do vs. actually solving a problem?

Well, got off the “performance of a 21’ boat with a 200hp” topic pretty quick and down a bantering rabbit trail real fast! Never a question of “IF” only “WHEN”!

Well, Dub-a-dub never did have anything positive to contribute to the thread's original question. Until then, I was making an attempt at it. He eventually found a a petty way to "contribute", but I can turn that off if he gets to be like a gnat in your face.

The OP never did tell us what hull, though.