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Merc 500R vs 520/XR

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Old 08-19-2023 | 10:36 AM
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Originally Posted by rak rua
…….or clamp an I/O on the transom and get an outboard that sounds like a big block…..
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Old 08-19-2023 | 05:52 PM
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Originally Posted by rak rua
…….or clamp an I/O on the transom and get an outboard that sounds like a big block…..
The Sport Exhaust mode on the Verado V8's and V10's actually sound pretty good.

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Old 08-19-2023 | 09:07 PM
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You prejudice fuks are killin me!

I say that with the utmost of love.

I love my 2 stroke OBs but still stop in my tracks when I hear a hi zoot IO fire off.

I have educated many, many boating friends on the difference between a loud IO and a loud IO that was making power.

Two totally different things.

A 454 with “Captains Call”?
😝🤓😎

Know which one there are more of 😝

I would present that you haters have not had a ride in a proper, vanilla OB.

Ever been a 100+ in a 17’ hull that weighed 543 lbs?
Powered by a 186 in motor?

Ever driven a boat that you knew that one more tap of the “up” button would send you for a swim, or kill you?

It has been a long long, long long time since I was passed by an IO.

Oh wait….., no, the above is correct.
Wasnt this yr, decade or the last one.

Cant find my favorite shot of a buddy in his vanilla powered 19’ STV side by side w/a blown “BIG BLOCK” vee drive flat bottom At WFO!

I would also state for the record, that the drivers of the boats in these shots would debate you on their rigs being soulless.

All kidding aside, they are here to stay so accept them or sit back and watch.













Last edited by Twin O/B Sonic; 08-19-2023 at 09:32 PM.
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Old 08-20-2023 | 06:34 AM
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In all seriousness, the new Merc 4 stroke OBs have changed the game for OB powered boats and especially the mid size and up Offshore market.

Yes the market has shifted to CC’s but if you write the check I’m sure they’ll build a deck for you.

Before these new OBs, I always saw 30’ as about the limit for twin,2 stroke OBs.

A couple of exceptions were 33’ Powerplay or similar but understood I had to accept 65 as a WFO.

Now you could put a pair of 450R’s on one and probably run high 80’s?

Look at what the new, mid 30’s, twin OB cats are running!
115 is now slow!

Huge positives for OBs that you IO guys don’t have is being able to tilt the entire motor out of the water when at rest.
Especially when in salt or left at dock.

Another, and IMO, bigger feature is Jack plates.

I look at some of the amazing builds you guys have done and can’t even imagine the amount of sleep I’d lose studying a new X dimension!

I can raise/lower my motors 5”+ w/the push of a button!

Ive been in channels, harbors, beaches that there’s no way I could do in an identical IO powered boat.

And underway, you TOTALLY change the dynamics of the boat!

W/my tiny (25’) boat in Lake Erie, it only works w/the plates down so I can slow my planing speed to handle the waves.

When it calms, you raise the motors, w/o touching anything else, and watch the speed/RPM increase!
Even when just optimizing your cruising speed.

Add to that the drastic improvement to docking abilities w/the motors down!
W/the motors up, as in a high X dimension, or my OBs, w/no plates but set to kill, and the wind blows…., my boat goes bow down wind, w/the wind!

And it sucks.
Plates down, it docks like a fish boat.

Lastly, the storage you p/u where the IO motors used to be.

We weekend on our boat and we carry:

2 folding bikes

an inflatable 8’ dinghy

2 deck chairs and table

2 anchors

4 life jackets

a grill

tool box

2 coolers

etc, etc

And we don’t even use all the storage space!

Of course if your boat is day rocket then most of this doesn’t matter.

I love the sound of my 2 strokes at full song but a big block at full tilt, is a special kind of music as well.

I also know motors well enough to understand/appreciate what you guys have to do to get/keep them there!

Last edited by Twin O/B Sonic; 08-20-2023 at 06:39 AM.
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Old 08-20-2023 | 09:55 AM
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Well said Gary...,Had both ...great things about either...At least now a days outboards are getting the respect they deserve..
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Old 08-21-2023 | 11:56 AM
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Twin OB Sonic, you made some good points. I don't think anyone's knocking outboards themselves and both OBs/IOs have their advantages. I was just curious at what price point are new OBs still worth it over new IOs.
Honestly you'll probably see me in 10yrs with a 24-26ft tritoon with twin 200 OBs and a Allison Grandsport or Quartershot T4 with a 4-stoke sitting next to it in my garage.
Regardless, you'll never see me with a 2-smoke anything. Parts and knowledgeable mechanics for them are starting to get real slim around here.
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Old 08-21-2023 | 06:03 PM
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Originally Posted by Plowtownmissile
Regardless, you'll never see me with a 2-smoke anything. Parts and knowledgeable mechanics for them are starting to get real slim around here.
Interesting consider the 2 stroke OBs have no valve train, camshafts, oil pumps etc.

50% less parts than a car motor and they can’t figure them out?

Mostly it’s two things that kill them.

Poor tuning and carbon build up on the rings.

W/2 strokes firing every crank rotation Vs every other on a 4 stroke, the combustion chambers don’t have the time to cool between combustion cycles like a 4 stroke/cycle.

So if you mod your motor and are off on your tuning…., by……, an itty bitty, your done.

Ask me how I know 😉

99% of the failures though, are due to oil coking of the rings.

Causes the rings to “stick”, compressed in the ring lands of the piston (‘s) which then allows flame propagation from the combustion chambers to blow by them, burning the oil film off the cylinders, allowing metal to metal contact between piston ring and cylinder (sleeve), raising combustion temperature, motor goes into detonation and BOOM!

On the other hand, the OB dealers of their day didn’t necessarily do a good job on their side either.

Did you know that OMC offered power steering on their OB’s in the mid ‘80’s?

They got terrible press in the day but I sold them, drove many at 100 MPH and loved them!

Remember the fuel line, squeeze bulb primers for the OBs that everyone hated?

Had to move people off the rear seat so you could squeeze the bulb under the seat.

Did you know they offered an electric primer upgrade where you could hit a button at the dash instead?

I didn’t either until I built my own for my last several projects including my current one.

They of course have been oil injected for yrs but did you know they offer remote fill ports and larger oil tanks?

I put both in mine.

So no spilling oil while filling the tank under the back seat cushion.

Oil fills are on side deck like fuel fills.

My oil tanks are 3 gls each and I run 4 - 5 tanks (92 gls per) of fuel before refilling.
About the time your changing your oil anyhow.

My motors are even carbureted and not EFI.

W/good oil, they are smoke free.

Funny too, when the new 4 strokes came out I thought I’d want a pair.
Opposite happened.

I saw they’re price and realized how much I like my old junk!
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Old 08-21-2023 | 10:09 PM
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There's some diehard 2-stroke guys around here but I've heard a few talk about issues getting powerheads or replacement engines that had let go.
The only guy around me I'd trust to work on one or dial it in is Dennis Berry but last time I stopped by his house to chat, he was booked up for a long time and he's not getting around as good these days unfortunately (back surgeries).
No worries on making me a believer in 2-strokes... I first met Brad Rowland a long time ago at one of our local lakes when he had his first toon with twins long before he got famous or put triples on it 😉 The other weekend my son asked who had the baddest boat on the lake, I pointed over at Brad in Tooned In Too, and my son was shocked when I told him how fast it'd run 😂
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Old 08-21-2023 | 10:28 PM
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I’m sure many of you have seen this, it still makes me smile.
(Apologies if it was posted on here, I can’t recall where I saw it first)



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Old 08-22-2023 | 04:22 AM
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Bla, hah, hah!

Love it and, it works for me.

When I do stupid **** around the house and my wife shakes her head I always tell her, “as Popeye always told Olive Oil, I is what I is”!

Funny too, just had new graphics done for my Convincor project and changed its name from “Cocky” to “The Science Project” and the wife said Cocky was a better fit 😝

On price difference from IO to OB, OBs have always been more expensive, for off the shelf stuff.
Lots of reasons why.

I sold boats a dealership in ‘1989 and one of our boat lines was Checkmate and we were also an Evinrude dealer.

We had two 25’ Convincor IOs, one w/a 460 Ford and OMC and one w/a 454 Mag (I think 365 HP at the time) and a Bravo.

The Bravo boat was right at $45K and the OMC boat was $1500-ish less.

Me being the OB guy, I wanted a new Convincors w/twin OB’s, BAD!

I remember doing the math over and over and over, and even at dealer cost I was into the low $60K’!

And at that point in my life, wasn’t going to happen.

I remember sitting in that Bravo boat, trying to justify that extra $20K and never could.

Really was a nice package w/that power.

Interesting stuff…..


I think I still I have that dealer price list somewhere.

Was a fun job w/great benefits while it lasted!

Was owned/run by two brothers.
One that tried to make it a successful business and one that like to play!

The bad brother and I used to get in trouble all the time for taking “Demos” to the local pond, 2 mls away!


Originally Posted by rak rua
I’m sure many of you have seen this, it still makes me smile.
(Apologies if it was posted on here, I can’t recall where I saw it first)


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