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View Full Version : 350 MCX Enough for an X-45???


x-swagger
09-21-2009, 05:45 PM
So I really want to upgrade to an X-45 in the next couple years or so and have been seeing a lot with the 350 MCX, the same motor I have in my X-Star, and it seems to me like that motor wouldn't quite do it for a 24 foot 5000lbs boat...

Any thoughts? Comments from someone with a X-45 with the MCX?

btriantos
09-21-2009, 05:50 PM
I have a X30 with the MCX, and it will get on plane pretty easily with 10 people on it. 12, and it noticably slower. If you get that big boat and pack it, you may want a bigger motor...IMO

03 35th Anniversary
09-21-2009, 06:02 PM
So I really want to upgrade to an X-45 in the next couple years or so and have been seeing a lot with the 350 MCX, the same motor I have in my X-Star, and it seems to me like that motor wouldn't quite do it for a 24 foot 5000lbs boat...

Any thoughts? Comments from someone with a X-45 with the MCX?

GO WITH THE BIGGER MOTOR!!!

It's alot of boat! I have a friend that has an X-45 with the MCX...

MrCerretti
09-21-2009, 06:03 PM
So I really want to upgrade to an X-45 in the next couple years or so and have been seeing a lot with the 350 MCX, the same motor I have in my X-Star, and it seems to me like that motor wouldn't quite do it for a 24 foot 5000lbs boat...

Any thoughts? Comments from someone with a X-45 with the MCX?

I have an 06 X45 with the MCX. I think it is great. It wont do 75mph.......go figure. I would like a big block, but not at the pump.

End result if I had to do it over again, I would still buy the MCX. Awesome, RELIABLE!!!!!!!!!!!!!!!! motor.

MC

JohnE
09-21-2009, 06:26 PM
I'd go with the big block all the way.

SkiDog
09-21-2009, 06:43 PM
I'd go with the big block all the way.

There's a couple of 07 X45's, down in South Fla. that are for sale and they got 310HP motors in them!:uglyhamme:uglyhamme:uglyhamme

03 35th Anniversary
09-21-2009, 06:45 PM
There's a couple of 07 X45's, down in South Fla. that are for sale and they got 310HP motors in them!:uglyhamme:uglyhamme:uglyhamme

I didn't think the 310 was even an option in that boat

Age Fighter
09-21-2009, 06:52 PM
I have an 06 X45 with the MCX. I think it is great. It wont do 75mph.......go figure. I would like a big block, but not at the pump.MC

Uh oh. "...but not at the pump."

Normally means I really want the bigger engine, but since I didn't get it, I will say that I really love the fuel savings.

(shhh, the big block would only burn more fuel when it does what the small block won't do!!!)

JohnE
09-21-2009, 06:54 PM
There's a couple of 07 X45's, down in South Fla. that are for sale and they got 310HP motors in them!:uglyhamme:uglyhamme:uglyhamme


I can't imagine buying a 45 with the 310. I know if I were ordering one today it would definitely have the L18. We've discussed this so many times here. The only reason not to get the L18 is the cost. And for a boat that is close to $100K, it shouldn't be an issue.

JohnE
09-21-2009, 07:04 PM
I have an 06 X45 with the MCX. I think it is great. It wont do 75mph.......go figure. I would like a big block, but not at the pump.

End result if I had to do it over again, I would still buy the MCX. Awesome, RELIABLE!!!!!!!!!!!!!!!! motor.

MC

You might find this thread interesting. http://mastercraft.com/teamtalk/showthread.php?t=20371&highlight=fuel+consumption

Kingsley X-1
09-21-2009, 07:04 PM
I can't imagine buying a 45 with the 310. I know if I were ordering one today it would definitely have the L18. We've discussed this so many times here. The only reason not to get the L18 is the cost. And for a boat that is close to $100K, it shouldn't be an issue.

very will said JohnE

Age Fighter
09-21-2009, 07:31 PM
You might find this thread interesting. http://mastercraft.com/teamtalk/showthread.php?t=20371&highlight=fuel+consumption

OMG -- looks like I turned out to be correct.

Thrall
09-21-2009, 07:39 PM
No way I'd get a boat that big with a small block, unless it had forced induction and a bottle!
I'm having issues with "Is the MCX enough for an X-2?"
Guess I wanted it to run like my 190/LT-1.

TallRedRider
09-21-2009, 08:56 PM
I have test driven an X-35 with the MCX. The 35 weighs pretty much the same as the 45. I am at 2700 feet elevation.

I thought the hole shot was just fine with stock ballast. I am not sure what WOT speed would be, we did not do that, but it went over 30 MPH, so I didn't care beyond that. I think if you were just using the boat for boarding and did not care much about faster speeds or very heavy, you could do just fine with the MCX, as long as you don't load it down heavily, and choose the right prop for what you want it to do.

Having said that, it is amazing to me that I load my 45 with the 8.1 down with 1500 over stock ballast and my hole shot is pretty well the same as when it is empty. I am definitely a little deeper into the throttle, but don't have to go WOT to have a great hole shot.

TX.X-30 fan
09-21-2009, 09:33 PM
You might find this thread interesting. http://mastercraft.com/teamtalk/showthread.php?t=20371&highlight=fuel+consumption

You made explorer scout right??

Jerseydave
09-21-2009, 09:45 PM
I wouldn't go with the MCX or the L-18 in the X-45

LY6 is the answer! (Rusty even likes this motor better than the L-18 in his X-star)

I would have preferred the LY6 in my X-star, but I got a great deal on mine with MCX power and it's actually pretty good until you have over 2500# ballast and 7+ people. If it were the size of the X-45 I'd be dead in the water!

There is no replacement for displacement! :)

badams
09-21-2009, 11:09 PM
No. The L18 is the motor for the X45.

MrCerretti
09-21-2009, 11:12 PM
You might find this thread interesting. http://mastercraft.com/teamtalk/showthread.php?t=20371&highlight=fuel+consumption

Anybody know how I could be as cool as this guy ^^^^

cbryan70
09-21-2009, 11:15 PM
GO WITH THE BIGGER MOTOR!!!

It's alot of boat! I have a friend that has an X-45 with the MCX...

it wasnt that bad 03 we had like 4000 pounds of ballast WOT at 18MPH isnt to shabby....he needs a lower pitched prop BADLY

Doug G
09-22-2009, 01:08 AM
Nope it's not. My x-30 with the MCX is fine with stock ballast and 3-4 people. Throw in some sacks and/or a full crew and it's a flinstone mobile. That being said I am propped in the middle, didn't prop it for being slammed out since that is not the average use. I am sure I could prop it to run better with that load but it's not my every day. MCX is fine for average use. It's all about what your going to do with it and what makes you happy. IMHO

I have never met anyone that thought they had too much power ... just sayin

endl
09-22-2009, 11:35 AM
So I really want to upgrade to an X-45 in the next couple years or so and have been seeing a lot with the 350 MCX, the same motor I have in my X-Star, and it seems to me like that motor wouldn't quite do it for a 24 foot 5000lbs boat...

Any thoughts? Comments from someone with a X-45 with the MCX?
I bought mine used at the end of 06 and got a good deal on it. I had only driven an X-star with a MCX and that was the only comparison I had. I upgraded from an older Maristar so the 350hp felt fine and boat performed what I considered ok. I then put a Wakeboard prop Acme 1285 on the boat and that helped. Better hole shot, better corner handling.

When I have filled the X-Star ballast kit on top of my stock ballast boat does struggle to come up on plane. Of course thats 2500lbs of extra weight.

I think if your a more recreational user then 350hp MCX is fine. If you like to add lots of ballast and try and make big waves for surfing then look for a boat with the bigger engines.

I have not drove a MC with the Ly6 or L18 so me not having felt the performance difference is a good thing but if money and options were not an issue I would always choose more HP.

x-swagger
09-22-2009, 11:53 AM
Well i have an x-star now and believe it or not i surf more than i wakeboard, that is why i am looking into a 45, i want a HUGE surf wake!:D

mpabreo
09-22-2009, 03:16 PM
The 45's surf wake is very good when loaded right. However, I'd strongly recommend against anything less than the LY6 in it. If you're going to add upwards of 2000# in addition to the stock ballasts, get the biggest engine available. Get the Supercharged 2010 LY6!

So, to answer your question directly, DO NOT GET A 45 WITH THE MCX. You'll kick yourself in the arse for spending such coin on a fine boat and skimping on the engine.

joshomatic
09-22-2009, 03:28 PM
I agree. I had 2500 pounds total added dead weight in my 2005 x-10 just to see what the surf would do. AWESOME surf...........FOREVER to plane! I couldn't begin to think of getting an x-45 with an MCX. Great motor, but let's face it............would you take a 150 pound guy to fight Chuck Liddell?

MCRambo1
09-22-2009, 04:02 PM
(shhh, the big block would only burn more fuel when it does what the small block won't do!!!)

Yeah maybe another mph or two, that's about it. But you will most assuredly pay more at the gas dock for the difference.