8.1L in X2?

(skibum69) · (skibum69) **Join Date: Aug 2004** 09-10-2009, 11:58 AM

I was browsing the '07 MC manual when I came across this:
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I didn't think the 8.1L was an option in the X2 let alone the 197, maybe it was on the down low.

(morgs) · (morgs) **Join Date: Nov 2005** 09-10-2009, 12:22 PM

I have driven a 190 with the 8.1L. Its an absolute monster...

(guido) · (guido) **Join Date: Jul 2002** 09-10-2009, 12:23 PM

Day-um.... That'd have some monster grunt. Our Stars with the 8.1's were unstoppable. They could haul crazy amounts of weight.

(jpuckett) · (jpuckett) **Join Date: Apr 2005** 09-10-2009, 3:11 PM

And suck up crazy amounts of gas!

(liquidmx) · (liquidmx) **Join Date: Jun 2005** 09-10-2009, 3:49 PM

It would be a pretty nice setup actually. Small boat, big heavy motor. Throw a 1k sac in the bow and a few lead bags and call it good!

(talltigeguy) · (talltigeguy) **Join Date: Sep 2003** 09-10-2009, 8:24 PM

I have been pretty pleased with the fuel economy of my X45 with the 8.1L.

At wakeboarding with around 2K ballast, it runs at around 3600 RPM. I get about 10 gallons per hour.

But by just stepping it up to 4200 RPM for cruising, it starts gulping like I could not believe. Maybe someone can explain this observation, but 32 MPH with no ballast sucks the gas pretty fast.

(rio_sanger) · (rio_sanger) **Join Date: Apr 2007** 09-10-2009, 9:06 PM

Well, 4200 rpm is about 17% more than 3600 rpm, so I would expect at least that much more fuel consumption.

I don't feel so bad now, my boat burns about 5 gph fully loaded!

...My 8.1 Suburban, now that's a different story

(pc_sledge) · (pc_sledge) **Join Date: Jan 2006** 09-11-2009, 4:45 AM

I think the 190/197 with the 8.1 is a popular set up for ski show clubs where they do the pyramids with one boat pulling up like 8 peeps at once.

(johnsvt) · (johnsvt) **Join Date: Dec 2006** 09-11-2009, 6:46 AM

Been behind a 197 with a 6.0 and couldn't imagine that boat with an 8.1

(roomservice) · (roomservice) **Join Date: Dec 2006** 09-11-2009, 7:25 AM

Pretty much all gasoline engines burn .425 pounds of fuel per bhp/hr. A larger displacement engine loses efficiency at around 35% loaded or less and a smaller displacement engine loses efficiency at around 85% loaded or more. So it's the load that determines the fuel consumption. If the engines are within the 35% to 85% range (which is most applications) then they all burn about the same for a given load.

(stephan) · (stephan) **Join Date: Nov 2002** 09-11-2009, 9:17 AM

I think they also use the 8.1 in the ski jumping/flying boats. Those guys put an incredible strain on the boat when they set their edge. That boat wold a be a ton of fun to race around in. Maybe Travis Moye knows the use of those big engines in the little boats...

(srh00z) · (srh00z) **Join Date: Jun 2003** 09-11-2009, 9:29 AM

Ski jump or Ski Fly would be my guess. I can remember seeing the Ski Fly towboat at the Masters, it was a Nautique of course, but it had a Supercharged PCM and the driver said it was putting out around 500 HP and I can't recall how much torque.

(johnsvt) · (johnsvt) **Join Date: Dec 2006** 09-11-2009, 9:57 AM

The 197 I was beind was Freddy Krueger's old boat

(dxii) · (dxii) **Join Date: Jan 2009** 09-11-2009, 1:28 PM

I skied a barefoot race behind an X14 with the 8.1 last fall. Started with a little less than a full tank. 18 miles at WOT used 3/4 tank. We ran out of gas just cruising slowly on the way back.
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(snowboardcorey)

Jon that boats got a 6.0 Liter in her and congrats on the WIN!!!

sandvign 09-11-2009, 4:08 PM

HA! Lovin that picture!

(dxii) · (dxii) **Join Date: Jan 2009** 09-11-2009, 8:13 PM

Corey, I'm pretty sure he had the 8.1 in the silver one last year.

(snowboardcorey)

Naw, 6.0 in that one and the black/yellow one, the new red rockets got a 5.7 liter.