Break in period Supra SL400

[HFarr]

When it come to engines these days, the old saying of "they don't build em' like they used to" is true. They don't. They build them a hell of a lot better! Used to be you were lucky to get 100k miles out of an old car. Now that's nothing. As long as you do some basic oil changes that is.

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[sandm]

my gut tells me the reason to break in a boat motor on wakeboats has more to do with the loads they will see vs a car. most people that buy a new car vary their driving habits by virtue of their daily routines. not many hit the freeway at 4-4500rpm's for excessive time where mjb's is a more accurate pic of boats and how they are used. we followed the break in on our last 2 new boats but the many many cars and sportbikes I have bought new over the last 20 years, drove them like they were meant to be and never had an issue.

either way unless your motor pukes at 20hrs, it's my understanding that the indmar ecu only pulls hours/minutes at each rpm level since new, NOT a detailed hour by hour of use so once you hit more hours and engine does grenade, it would be tough for them to void based on lack of break in.

[MJHSupra]

I’d be curious to know what the factory run-in time on the Raptor engines before they are released.

At the factory, they may start them up.

I know they take them for a lake test when the boat is all put together. Probably just before the final badging step. The boat ramp is about 20 mins from my house and I have seen the factory boats running up/down the lake. Assume there is checklist of things to look at, it's been years since I was on a factory tour.

Per the 2018 manual and not over 2000 rpms for the first hour - doubt that ever happens.

[larry_arizona]

I was on the tour last year, they still water test each boat.

I personally don’t understand why someone would not follow a recommended break in procedure.

It’s not just the engine breaking in, there is also transmission and V drive.

I can tell you for a fact the trans and v drive are noisy when new which tells me the gears shed some surface material, obviously that is why the fluids are changed at 20 hours.

But not my boat, so who am I……


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[2in2out]

The 2022 Indmar manual just says:

Do not exceed maximum RPM recommended for your engine.

What is maximum RPM? Isn’t red zone 5500?

This sounds like “drive it like it’s broke!”


2022 SA 450

[MLA]

I cant speak to the v-drive/trans noise lessening with hours, but as to engines, break-in is a thing of the past. The tolerances are so tight and the assembly process is so precise, there is nothing to break in. Drive it like you stole it, Ricky Bobby, and pull the heads at 1000 hrs and there will still be hone marks on the cylinder walls.

Driving the boat as you intend to use it, is not far outside the break in steps, if you think about. The RPM is going to very, the RPM will not be held at one level for very long. So loading up some ballast and surfing, is not abusing the engine.