Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)
-   -   300xs and 28 Skater (https://www.offshoreonly.com/forums/general-boating-discussion/153392-300xs-28-skater.html)

offshoresteve 03-13-2007 12:14 AM


Originally Posted by BRD (Post 2055576)
Do these require 93 octane ?

91 min.

TOPS 03-13-2007 07:31 AM

call the double r guys in canada.....they have set up acouple fast 28's with 300's

RBT 03-13-2007 09:32 AM

TOPS those were X motors not the XS motors.... and they weren't fast compared to some of the US 28 Skaters!

RT

T2x 03-13-2007 09:57 AM

Box Stock
 
Twin Modified motors( 2.5's and 300x) have pushed 28 Skaters over 125.

My question is where do the new XS motors stand in this comparison?

T2x

AppSysCons 03-13-2007 10:59 AM


Originally Posted by dan lawrence (Post 2055140)
I have 48hrs

12hrs over 6 grand the motors are awesome. fuel efficient durrable.

Only issue is that they start to shut down at 6150 and go into gaurdian at 6300. I would imagine with the 1.62 gear ratio you will run out of prop like me.


great engines.

Dan

Dan,

I am going with 1.62 gear ratio, 14 1/2 x 32 cleaver 3 blades. When Jim was at at the Powerboat Mag test for the 30 skater, they ran 32s, but Jim & I are hoping we run out of prop and plan to try a 34.

Frank F.

dan lawrence 03-13-2007 01:08 PM

300xs
 
My boat is runing 109 full of fuel or empty with 15x34 cleavers stock. I saw 112 on a flat calm day.


your boat easily will turn the 34's



The boat ran 118 with the 280's 116 everyday so I know more speed is in it.

dan

mmwalters 03-13-2007 01:34 PM


Originally Posted by dan lawrence (Post 2056444)
My boat is runing 109 full of fuel or empty with 15x34 cleavers stock. I saw 112 on a flat calm day.


your boat easily will turn the 34's



The boat ran 118 with the 280's 116 everyday so I know more speed is in it.

dan

Dan So as of now the 300xs lost app.5mph compared to the 280ros ? Did the boat gain weight as a result of the pleasure conversation?

dan lawrence 03-13-2007 01:52 PM

300xs
 
I have not weighed the boat. I don't think it is slower because I am on the rev limiters with the 34's. The motors stop making horsepower at 6100-6150 cylinders are flooded oil. The efficiency of the boat carry the boat to 6300 and the motors go into gaurdian mode.


If I had a set of 36 pitch props the boat would be faster.




Basically its going to be difficult with the 07 model year motors to see 120 mph with out custom props. I would bet that eventually mercury will increase the rpms on the motors as they get more time.

mmwalters 03-14-2007 02:32 PM

Dan I agree if your motors will pull the same speed empty or full. Horsepower is not the issue. Talk with BBlades about props. Maybe 4blades would help


All times are GMT -5. The time now is 08:42 PM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.