Repower 2001 130 Super Sport

Optimizing the performance of Boston Whaler boats
itsmemagic
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Repower 2001 130 Super Sport

Postby itsmemagic » Tue Jan 25, 2022 6:20 pm

Give me a recommendation for repowering a 2001 Super Sport 130. It has a 40-HP engine now.

BACKSTORY: Currently my 2001 130 SUPER SPORT has the original 2000 Mercury 40-HP ELPTO two-stroke-power-cycle engine. A repair shop quoted $3,700 for the new rods, new crankshaft, and a set of bearings to repair a 15-degree play in the connecting rods and crankshaft for the bottom cylindrt--and that is assuming the piston and block are find. And no labor charges included in the estimate.

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Phil T
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Re: Repower 2001 130 Super Sport

Postby Phil T » Tue Jan 25, 2022 7:29 pm

I would look at 50-HP and 60-HP engines.

Many owners think the factory 40-HP boat is a bit under-powered.

The question of brand is moot as it is all about availability and price. Finding a motor is a major challenge these days.
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itsmemagic
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Re: Repower 2001 130 Super Sport

Postby itsmemagic » Tue Jan 25, 2022 8:41 pm

Thanks for the input, I appreciate it.

From my reading, a lot of people say even the 40-HP four-stroke-power-cycle engines are too heavy for a 2001 130 SUPER SPORT, so I have to say your comment surprises me.

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Phil T
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Re: Repower 2001 130 Super Sport

Postby Phil T » Tue Jan 25, 2022 9:34 pm

Look at the new engine weights and simulate the weight in the boat to assess if it would be a problem.

Engine Weights:

Mercury
40hp FourStroke (3-cyl)...206 lbs.
50/60hp FourStroke .......247 lbs.
Yamaha
F40 ......................214 lbs.
F50/F60...................247 lbs.
Suzuki
40/50/60..................229 lbs.


Many owners have the fuel tank and battery in the stern. Moving them forward helps offset the stern bias.
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TreyWeitzel
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Re: Repower 2001 130 Super Sport

Postby TreyWeitzel » Wed Jan 26, 2022 10:00 am

I’ll have to agree with Phil about increasing the horsepower [when repowering a 2001 130 SUPER SPORT that has a 40-HP engine].

In the summer of 2021 a relative repowered a SUPER SPORT 13 with a Yamaha F30 from the original Mercury 40-HP two-stroke power-cycle engine because that was all that could be found locally and quickly. The boat really misses those other 10-HP..


My boat is a completely different hull design from your 2001 SUPER SPORT 130. I have a 13 Dauntless with the original four-cylinder Mercury 40-HP ELPTO two-stroke-power-cycle engine that weighs 177-lbs. When a repower becomes necessary I will be looking for the lightest weight 50 or 60-HP engine.

I have simulated the extra 50-lbs weight that a Suzuki DF40/50/60 engine would add; there is barely any discernible difference in the boat static trim.
1997 Boston Whaler Dauntless 13'
1990 Boston Whaler 9' Tender
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jimh
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Re: Repower 2001 130 Super Sport

Postby jimh » Wed Jan 26, 2022 1:52 pm

TreyWeitzel wrote:...repowered a SUPER SPORT 13 with a Yamaha F30 from the original Mercury 40-HP two-stroke power-cycle engine because that was all that could be found locally and quickly. The boat really misses those other 10-HP.

The change in power was a factor of 0.75. Assuming the weight was constant, the speed decrease would be 0.75^0.5 - 0.86, or a 14-percent decrease in speed. Assuming the boat wasn't already being run continuously at full-throttle, I would be surprised if a 14-percent decrease in top speed would be noticeable. If the boat used to go 30-MPH at full-throttle with 40-HP, then with a 30-HP the boat would go 25.8-MPH.

Increasing to 60-HP from 40-HP [which is what is being discussed in this thread] is a power ratio of 1.5, and the effect on speed is then 1.5^0.5 = 1.224 or a 22.4-percent increase in speed, again assuming no weight change. Again, if with the 40-HP the boat would go 30-MPH, them with 60-HP it should go 36.7-MPH. If the new smaller engine were lighter, the speed change would have been even less.

TreyWeitzel wrote:I have simulated the extra 50-lbs weight that a Suzuki DF40/50/60 engine would add; there is barely any discernible difference in [my] boat's static trim.
The effect on static trim of adding 50-lbs to the transom really depends on how much the boat weighs already. If you add 50-lbs to a boat that weighs 500-lbs, that is a 10-percent increase in weight. If you add 50-lbs to a boat that weighs 1,500-lbs, that is only a 3.3-percent increase in weight.

The hull shape at the stern will also affect how much deeper draft occurs with a particular amount of added weight. If the hull has any flare outward at the stern, as the hull sits deeper in the water the change in draft with added weight becomes less due to the hull displacing more water due to the flared hull sides.

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Re: Repower 2001 130 Super Sport

Postby jimh » Wed Jan 26, 2022 1:55 pm

itsmemagic wrote:Give me a recommendation for repowering a 2001 Super Sport 130. It has a 40-HP two-stroke-power-cycle engine now.
If you change to a 40-HP four-stroke-power-cycle engine there will likely be some weight gain and also a loss of engine power band compared to the classic two-stroke-power-cycle engine on there now. Two-stroke-power-cycle engines tend to be able to develop their rated power output at a lower engine speed, while many four-stroke-power-cycle engines need to be able to accelerate to the very top end of their rated engine speed to hit their rated power output.

itsmemagic
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Re: Repower 2001 130 Super Sport

Postby itsmemagic » Thu Feb 10, 2022 11:31 am

Thanks to everyone for their input.

To use a 40-HP engine seems the best choice.

Mercury [engines] are on backorder and delivery may be in 26 weeks.

The [delay in delivery with a] Suzuki engine is even worse--unless a dealer has the engine in his inventory.

When a new engine is NOT installed by the dealer but by the owner, what is the effect on the manufacturer's engine warranty?

When a new engine is NOT installed by the dealer but by the owner, what is the effect or later service?

What is the effect on service if a new engine is installed by a dealership that's far from your home?

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Phil T
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Re: Repower 2001 130 Super Sport

Postby Phil T » Thu Feb 10, 2022 2:56 pm

There should not be any problems regarding warranty if you choose a DIY install. Make sure you submit any paperwork to activate the warranty.

Any dealer that refuses service should be avoided as they are shysters.

What is the inventory situation on 50/60's?
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itsmemagic
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Re: Repower 2001 130 Super Sport

Postby itsmemagic » Fri Feb 11, 2022 11:29 am

Inventory on the 50hp seems to be much better, as I was told 50hp is just a beefed up 40hp for not a lot more $

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Re: Repower 2001 130 Super Sport

Postby itsmemagic » Fri Feb 11, 2022 11:34 am

Once you DIY-install it, you're still obligated to do any maintenance service at the dealer, correct?
Where can I find more information on the topic?

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Phil T
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Re: Repower 2001 130 Super Sport

Postby Phil T » Fri Feb 11, 2022 1:13 pm

No, you do not have to do that.

You can do any maintenance you want or have any shop do it.

Think of the outboard as a car. Do it yourself, independent shop or dealer.

The warranty is for manufacturer defects only.

If it was me I would go for the 50/60 as you need the hp and you will get the engine sooner.
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itsmemagic
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Re: Repower 2001 130 Super Sport

Postby itsmemagic » Fri Mar 04, 2022 4:30 pm

Decided to go with the white Suzuki 40. Excited!

Have an option to upgrade to SMG4 tachometer instead of the 93J11 for extra $250.
Other than being a digital display, SMG4 has the troll mode built in. Not sure if I'll ever use it though, not a fisherman.

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Re: Repower 2001 130 Super Sport

Postby jimh » Fri Mar 04, 2022 8:40 pm

I would VERY CAREFULLY read the new engine warranty before assuming that a self-installation without involvement of the dealer is going to be recognized by the manufacturer for coverage under the manufacturer's warranty. Modern engines can easily be ruined by improper installation.

A certified dealer is expected to be able to perform a proper installation, and the manufacturer's warranty should automatically be in effect with a dealer installed engine.

Some elements of the installation that could harm the engine and therefore nullify the warranty are:
  • improper mounting height
  • improper battery connection
  • improper fuel system connection, such as fuel hose diameter too small, too much suction required to draw fuel
  • use of contaminated fuel
  • improper propeller selection

In some situations a selling dealer might endorse the installation performed by an owner and sign some paperwork for the manufacturer to initiate the warranty. A dealer that is accustomed to selling a lot of loose engines to customers for re-powering the customer's boat and having the customer do the installation may be willing to inspect the customer's work and endorse it as meeting all the required elements of a good installation.

Regarding getting service from a dealer if you did not buy the engine from that dealer, I suppose that depends on the particular dealer. If he has plenty of work and a two-month backlog already from his own customers, a new walk-in customer that bought the engine from a competitor dealership is probably not going to be put on the top of the list for service work. But it really depends on the dealer.

The last new engine I bought was installed by the dealer, and that dealer has done all the service work on the engine. However at the present time the that particular dealer and my boat are about 275-miles apart, and if my engine needed service I might use a closer dealer rather than tow the boat 550-miles on a trailer to the original dealer and return. I am sure he would be completely understanding--and he is already full of service work as he is a great service dealership.