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Old 05-16-2018, 02:02 PM
D2Dominator D2Dominator is offline
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How high do you Rev your Engine?

Good morning All,

May seem like a random question, but keep in mind that I come from the world of outboards.

Anyhow, I've had my 2002 X-Star for a year now and have yet to open her up. We typically wakeboard or cruise around with the family of young kids. In the outboard world, we often ran full throttle for periods of time but I'm scared to do it to an inboard for some reason.

So I ask... Am I being a wuss? I've never hit the rev limiter, and I don't think i've ever exceeded 35mph.

Can the 310 Predator run at high RPM's for long periods of time?

Thank you in advance,
D2
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Old 05-16-2018, 02:09 PM
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lakedrum03 lakedrum03 is online now
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At its heart, these are Chevy 350s, which have a long history of running hard and taking the abuse.

That begin said: these are ski boats built for a purpose, it is not to go fast. Can they go relatively fast for a boat of their size? Yes, most definitely.

I use the following rules of thumb: use the boat for its purpose at whatever speed and RPM when skiing. When not skiing, there is absolutely no reason to take the motor over 3k RPM. Mine runs great right below 3k, just enough bow rise to take the hits and still has a nice cruising speed. We have the same hull. When not cruising and not skiing, there is no reason to be above idle.

Those are my $0.02, but to me they are worth at least $0.04.
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Old 05-16-2018, 02:20 PM
LDA6339 LDA6339 is offline
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At first glance I took rev to mean running up RPM's in neutral, which I definitely do not do, unless I'm putting it at 1,000 RPM to keep alternator spinning when using ballast pumps.

I cant remember the last time I was above 28 mph or 4k RPM, so not super high.
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Old 05-16-2018, 02:28 PM
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I'm in the same boat as the OP, pun intended. Typically we are pulling skiers and boarders and usually never more than 32mph, and typically below that. Cruising RPMs are 1800-2400ish. My father-in-law once asked me: "how fast will she run" and he looked stunned when I said "I have no idea".
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Old 05-16-2018, 02:37 PM
trunderw trunderw is offline
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About 5300 rpms for my motor. Prop should help prevent exceeding top rpm
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Old 05-16-2018, 02:42 PM
james_shoemaker james_shoemaker is offline
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Same here on unknown top speed, I haven't had a reason to take her over 36mph as that's the max speed through the slalom course anyway. The "I don't know" answer confuses them until I explain what the boat is designed for and best at, then I take them out for a hole shot and when they slide off the observer's seat onto the floor they realize the truth.


James
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Old 05-16-2018, 02:45 PM
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Quote:
Originally Posted by james_shoemaker View Post
Same here on unknown top speed, I haven't had a reason to take her over 36mph as that's the max speed through the slalom course anyway. The "I don't know" answer confuses them until I explain what the boat is designed for and best at, then I take them out for a hole shot and when they slide off the observer's seat onto the floor they realize the truth.


James
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Old 05-16-2018, 03:48 PM
88 PS190 88 PS190 is offline
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I rarely go faster than about 38 mph, with out trim control and a V-Hull I just don't find it very appealing and if you get a few decent waves they'll really make it porpoise.
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Old 05-16-2018, 04:12 PM
D2Dominator D2Dominator is offline
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Makes total sense... I guess in a world where we no longer have to cover a lot of ground in a little time, there is no sense in maxing it out!

I suppose if I need to outrun a storm I can open her up a little bit...
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Old 05-16-2018, 04:41 PM
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Iirc, the Predator engine is rated for 4400 to 4800 RPM max...check your manual.

I believe my prop holds mine to 4600 which gets me 42mph....run pretty constantly 4400 when we're footing. My boat gets used for footin 50% of the time, slalom 40% of the time (30mph-36mph) and cruising 10%

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