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28 Skater Repower--- 2.5 race to 300x's

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Old 06-07-2004, 09:37 AM
  #31
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

Im sorry maybe Im missing something, I thought there was only the Pro Max 300x. Is there another 300 ?

Is the weight diff significant ? 480 for 300x vs 401 2.5 efi

Another question the Verado is 635 lbs, but that includes the steering, does it also include the trim pumps ?

Something to ponder on a Monday.

Rich, why did you check out the verado ?

Curtis
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Old 06-07-2004, 09:39 AM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

Before the 300X was the 300 Pro Max.

My 300 weighed in at 498 lbs with no cowling and no trim pump.......the 2.5 at 401 is about right with no trim pump.

No idea on the Vercrappo yet.

RT
 
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Old 06-07-2004, 09:55 AM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

How were the 300 Pro Max's. There is a 28 Skater with '99 300 Pro Max's that looks interesting but I have know idea about the motors.
What are rebuild intervals?
Are they strong motors?
What HP?
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Old 06-07-2004, 10:11 AM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

They are about 290 hp vs 320 for the X, last about twice as lone before a rebuild, lower RPM band also. Limited to 6250 rpm.

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Old 06-07-2004, 10:19 AM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

On the spec sheet from Merc the Pro Max 300x has 300 HP. Also it states it weighs 480lbs with the 20 inch shaft and the Torque master gearcase. I think the Sport Master would be heavier because of the prop shaft.

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Old 06-07-2004, 10:28 AM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

I haven't had any major issues with mine except the gear cases. Other than that they have been solid.
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Old 06-07-2004, 12:34 PM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

Most of the X's are dyno-ing in between 315 and 329 hp and while the redline says 6800 they will run up to 7200.....at least my new 04's do.

I heard the 2.5's are unavailable, out of stock at this point.
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Old 06-07-2004, 06:29 PM
  #38
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

Quote:
Originally Posted by Firewalker
4 Strokes...... Yuuuuuuuuuuuuuuuuuuck!.

I have drag motors that idle at 7-800 rpm, and make 375 hp, set up, set up set up.
The 280 and 300 X are very civil motors, sadly they won't be around much longer, the last production run for the 280 is August, 225 pro max's are done.

Maximus, thanks!, not bad for a desk jockey EH!. ( I broke A LOT of stuff, it will make you learn fast that way......and I also have a rigging shop).

All these motors ( 260/280/300X ) should last a long time, but they are not perfect, and when they go, they go out in style, as T2x can apparently attest. These motors have ultra low quality parts inside them, reality is they should be replaced. Both the 280 and 300X are 150 hour motors ( MAX ), then they need new pistons, rings and bearings. I re-ring at 75 hours, or 8% leakdown. Good oil, and good warm up and cool down also help. ( try AliSyn oil ).
I agree with just about everything Firewalker has written...... except for the 4 stroke part..... and even there I understand his point of view and have a sentimental place in my own heart for the older 2 strokes. However, we don't seem to have a choice about keeping 2 strokes since the EPA now controls most engine design projects. I believe that Mercury will find a way to make the Verado more performance friendly.....and hopefully a bit lighter..... Certainly 4 stroke development is at a fever pitch worldwide......so it's only a matter of time...and dollars.

T2x

P.S. We came out of break in...... but still have some gentle hours to put on the motors before any extended W.O.T. In spite of that after I ran the boat for about an hour yesterday in rainy wind squalls on Great South Bay (4000-6000 RPM (70-100+mph)..... on a nasty chop.....and was drying off on the beach,....Joey Imprescia jumped in and posted 116.8 mph on my GPS (simply to eclipse the old numbers).....while being careful not to let the motors wind out....... (63-6500 and climbing before pulling back on the throttles)......

34" pitch..... Diameter 14 7/8"....half tanks...bad cross winds ...... mixed 12-24" chop...Temperature 62 degrees F...light rain....1-2 degrees negative trim (The old motors would have struggled to break 110 in those conditions....as they needed relatively flat water to get over 105-110).

I repeat..... I think I love these motors.... We'll post a final top speed when the engines have over 18 hours apiece on them (approx. 4 at present.)

T2x

Last edited by T2x; 06-07-2004 at 06:32 PM.
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Old 06-07-2004, 06:34 PM
  #39
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

Quote:
Originally Posted by yahoo
Im sorry maybe Im missing something, I thought there was only the Pro Max 300x. Is there another 300 ?

Is the weight diff significant ? 480 for 300x vs 401 2.5 efi

Another question the Verado is 635 lbs, but that includes the steering, does it also include the trim pumps ?

Something to ponder on a Monday.

Rich, why did you check out the verado ?

Curtis
Curtis I don't think the Verado is ready for 100+ mph speeds yet..........

Maybe next year...... The development program is the first outboard project at the new Site X...... I'm keeping tabs on it.

T2x
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Old 06-14-2004, 05:20 PM
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Default Re: 28 Skater Repower--- 2.5 race to 300x's

The boat ran 119 Saturday Morning....not bad considering not holding her wide open over a few seconds...... and having a Port motor cooling issue......

Temperature 72 degrees..... moderate humidity..... light 2" chop...... 6600 RPM.


T2x
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