outboard vs inboard

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10-12-2009 | 10:16 PM

#21

obrien

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Joined: Mar 2008

Posts: 529

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Quote:

Originally Posted by fastlane40

You didn't read it properly.The 525 boats are twice the weight but not twice the HP.Also the majority of 525's dyno@ 470hp.

Where did you get that number?

the HP500's and 500 efi's dynoed at 470 @ the prop. the 525's are 525 at the prop

10-13-2009 | 04:49 PM

#22

davidmercury

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Joined: Dec 2007

Posts: 887

Likes: 18

From: OHIO

outboard vs inboard

Quote:

Originally Posted by JIMKID Motorsports

the gear cases are junk and will not hold up on cats outboards no good i need more than two hands to count the failures

I don't know what your circumstances were with the condition of the sportmasters to begin with and the type (s) of hull that you ran them as well as what pitch props and your level of abuse to them.
My experience has been outstanding with the fatshaft 1:87 sportmaster lowers on the 2.5's.

10-14-2009 | 12:13 PM

#23

JIMKID Motorsports

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Joined: Mar 2001

Posts: 1,981

Likes: 7

From: Livonia Mi Usa

broke a fat shaft 300x went thrugh 4 300xs went trhough 4 300xs on number 6 there just a weak link no if ands or soory

10-14-2009 | 08:29 PM

#24

dreamboater

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Joined: Apr 2002

Posts: 1,234

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From: Southern Maryland

Quote:

Originally Posted by da*****rcury

4 blades, motors at low heights and run in relatively mild water conditions these lowers will live. Above 1 3/4 height, aggressive 3 blades, rough water....forget about it. From gears, seals, prop shafts, props...I have gone through them.

10-15-2009 | 01:38 AM

#25

offshoresteve

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Joined: Apr 2001

Posts: 794

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From: Atlanta / Ft. Myers Fl.

The 2.5 sportmasters hold up a lot better than the 3.0 liter lowers.

10-15-2009 | 11:31 AM

#26

stainless

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Iv'e run many 2.5 ob's from 92 thru 2007, on 28 , 32 and 36 skaters and the most we did was break 2 prop shafts! (and 1 powerhead) Maintenance is key! (Amsoil and Alisyn gear lube help) However once you go to an inboard setup with #6's I don't think you'll go back to outboards! Outbords def give a great bang for the buck, But 710 Ilmors with #6's are a whole different animal!

Last edited by stainless; 11-03-2009 at 11:58 AM.

10-15-2009 | 12:09 PM

#27

offshoresteve

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Joined: Apr 2001

Posts: 794

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From: Atlanta / Ft. Myers Fl.

Quote:

Originally Posted by stainless

Iv'e run many 2.5 ob's from 92 thru 2007, on 28 , 32 and 36 skaters and the most we did was break break 2 prop shafts! (and 1 powerhead) Maintenance is key! (Amsoil and Alisyn gear lube help) However once you go to an inboard setup with #6's I don't think you'll go back to outboards! Outbords def give a great bang for the buck, But 710 Ilmors with #6's are a whole different animal!

My next Skater will be a 32 or 36 with #6