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HydraSports 2390 Repower Assistance

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HydraSports 2390 Repower Assistance

Old 09-26-2020, 09:17 PM
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Default HydraSports 2390 Repower Assistance

I have a 2001 HS 2390 with twin Evinrude 175's and looking to repower, just blew an EMM. Current set up will plane boat with medium to light load on a single engine. This is an important feature to me as my runs are generally long. I have watched the video where they took a 25' Scout and installed an Evinrude 150 HO and a 200hp 4 stroke Yamaha and the Yamaha could not plane the boat. The Scout is very similar in size and weight to my HS, however, my HS was built for 2 strokes. What HP twin 4 stroke would be required to plane on a single engine. I am not sure a Yamaha 225 would do it as well which has me thinking I would need to go to twin 250 4 stroke to accomplish this. A concern is the additional weight of the 250 4 stroke as the HS 2390 is built for 2 strokes. Then the next issue is that the boat is rated for 350 max. HP.
Old 09-27-2020, 05:34 AM
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I have a 2001 2390 powered by a 300 etec. A couple thoughts, the boat needs all the horsepower and torque it can get. It also needs all the stern lift it can get. Therefore, on a repower, power to weight ratio has to be a major consideration. There is no way that boat will handle twin 225 or 250s, two or four stroke. Twin 4 cylinder four strokes might work but I still think the boat will need a lot of prop tinkering to get it to run right.

The new Mercury v8 looks interesting, especially if they bump up the horsepower to 350. Thatís the motor thatís on my radar right now

Last edited by andyp262; 09-27-2020 at 05:40 AM.
Old 09-27-2020, 05:39 AM
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https://www.mercurymarine.com/en/us/...ke/175-300-hp/

Mercury 175hp 3.4L V6's would be my choice, no heavier than your current motors and within your max hp limit. They make 225 hp out of the same block, so that 175 will be a strong 175, no doubt.

I owned that boat with twin Yamaha 150 hpdi's and it was awesome.
Old 09-27-2020, 08:23 AM
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Thanks guys for the reply. I am definitely looking to remain with twins and agree that you have to use a lot of tab to keep the bow down. Extra weight on the transom is a major concern but with the 4 strokes nut many options. I would consider the Evinrude, but with them in their current position not making any more outboards i have scratched them off my list. The Mercury 200, same block as the 175 is probably at the top of my list due to HP to weight ratio. My current twin 175's are 420 lbs and think the Mercury is around 475 lbs. The only other option I can see would be go with the 200HP Yamaha 4 cylinder at 489 lbs and know that I would not be able to plane on a single engine.
Old 09-27-2020, 08:31 AM
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I have an additional question. My biggest complaint about the boat is bilge access. I need to change some hoses and no way to get in there to do the work. Do any of you guys have any suggestions of how to get more access to be able to get in there?
Old 09-27-2020, 08:37 AM
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Originally Posted by Yogi2020 View Post
I have an additional question. My biggest complaint about the boat is bilge access. I need to change some hoses and no way to get in there to do the work. Do any of you guys have any suggestions of how to get more access to be able to get in there?

Remove the rod holder inserts on either side and the insert behind the transom fold down seat.

I was able to do most of mine by sliding into the splashwell hatch, (4 stroke motor so no oil reservoirs there), but if that isn't an option for you then I would remove the inserts. Get a heat gun if you don't have one. It makes removal of the hoses much much easier. Just don't melt anything.
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Old 09-27-2020, 08:48 AM
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My buddy had twin 175 Suzuki’s and it was a perfect match
Old 09-27-2020, 09:09 AM
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I think Iíd consider the 4 cylinder 200s over the 175s. Most are same block and about the same weight. 50 more horsepower might be worth the extra cost. Should haul ass too when the conditions allow
Old 09-27-2020, 09:53 AM
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Originally Posted by Yogi2020 View Post
The Mercury 200, same block as the 175 is probably at the top of my list due to HP to weight ratio. My current twin 175's are 420 lbs and think the Mercury is around 475 lbs.
My 150 HPDI's weighed 475 lbs if I remember correctly and that was not an issue at all for that hull. Sat perfectly in the water and never had water come up through the scuppers even with multiple people in the back of the boat. Many of those hulls were also rigged with the Yam F150's, which were also the same weight.
Old 09-27-2020, 10:31 AM
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OP I would have a very hard time seeing past 150 Mercs on that or any similar hull. They are the weight champs (455lbs), have the most displacement of available I-4 motors and are just easy to live with.

The planing on one motor thing - lots of opinions and I am certainly not a proponent of doing that to my one remaining motor when 20/40/60 miles offshore but.. is a matter of propping on the light side...I think a 150 would get that boat on step with the right 17P wheel.
Old 09-27-2020, 08:35 PM
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Thanks for all the information. The Mercury is at the top of my list, but was looking at the 200hp as it was only a few pounds more than the 150HP. I read that the Mercury 150 is a strong engine and would save me some coins in the process. I will need to look more into the Suzuki 175 hp as I have only briefly reviewed their specs.
Old 09-27-2020, 08:39 PM
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ACTEG,

I did remove the oil tanks from the area but still could not get in the bilge area with the motor on the transom. When I do my repower I plan to try again with the engines removed. I think that will allow me to get in through that hatch.
Old 09-28-2020, 05:27 AM
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Originally Posted by Yogi2020 View Post
ACTEG,

I did remove the oil tanks from the area but still could not get in the bilge area with the motor on the transom. When I do my repower I plan to try again with the engines removed. I think that will allow me to get in through that hatch.
It takes a bit of gymnastics to get in there...



To get to the livewell hoses you really need to take off the transom insert. Everything else you can get to by sliding in from the splashwell. I did not have to take out the rod holder inserts.


Old 09-28-2020, 08:57 AM
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Originally Posted by acteg View Post
It takes a bit of gymnastics to get in there...
Thatís the truth! I always made sure I had my cell phone on me and accessible in case I needed to call someone to help get me out.
Old 09-28-2020, 09:49 AM
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inline 200 Yamaha or Suzuki is the best match for that hull
Old 09-28-2020, 12:30 PM
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Originally Posted by WolpackVO View Post
My buddy had twin 175 Suzukiís and it was a perfect match
this is what Iíd put on it. I had the same boat with single 250 Ox66 and it was a dog. It always seemed ass heavy even with a single, putting twin 250 4 strokes on it would probably put scuppers underwater. There are people running 23 mckees which is similar hull with the twin 175s and performance is good.
Old 09-28-2020, 01:49 PM
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Originally Posted by MattH View Post
this is what Iíd put on it. I had the same boat with single 250 Ox66 and it was a dog. It always seemed ass heavy even with a single, putting twin 250 4 strokes on it would probably put scuppers underwater. There are people running 23 mckees which is similar hull with the twin 175s and performance is good.
Why stop with 175hp though? Most are same size as the inline 4 200s. Maybe the cost vs performance increase makes it not worth it but itís definitely worth researching. If itís $10k more for 3 or 4 knots on the top end then that probably isnít wise economically.
Old 09-28-2020, 02:04 PM
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The hull is rated for 350 hp I believe. If you care about such things then 175s are maxed. Donít know how much difference going to 200s will gain.
Old 09-28-2020, 03:25 PM
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Originally Posted by MattH View Post
The hull is rated for 350 hp I believe. If you care about such things then 175s are maxed. Donít know how much difference going to 200s will gain.
You are correct sir. It is rated for 350. Isnít 400 better though? Lol. And Iím dying to see the performance report

Last edited by andyp262; 09-28-2020 at 03:31 PM.
Old 09-28-2020, 04:24 PM
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Acteg,

Thanks for the pics and how in the hell did you get in there? You have to be double jointed. I was thinking of removing the cover that is in front of the live well as you show in the picture. I think that is the better option for me.

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