Like Tree0Likes

Why IO over OB?

Reply
Old 05-13-2005, 09:22 AM
  #11
Registered
 
Rocco's Avatar
 
Join Date: Nov 2002
Location: Mays Landing NJ
My Boats: 2000 25' Concept w/ 250 Mercury
Posts: 283
Default Re: Why IO over OB?

Tim,

Is there a 300+hp in the future for Evinrude? There has been alot of talk about this issue on screamandfly.com
Rocco is offline  
Reply With Quote
Old 05-13-2005, 09:48 AM
  #12
Registered
 
Join Date: Mar 2002
Location: Sterling Heights MI
My Boats: 2008 Gunshow
Posts: 369
Default Re: Why IO over OB?

IO's have a lower center of gravity(CG), which is preferable for most performance vehicles.
vtec is offline  
Reply With Quote
Old 05-13-2005, 09:56 AM
  #13
MTI / MTI-V
VIP Member
 
Tim G.'s Avatar
 
Join Date: Jan 2003
Location: Ft. Lauderdale, FL
My Boats: Building boats for you
Posts: 1,760
Default Re: Why IO over OB?

Rocco-
There certainly is plans for a bigger HP ob..
The current 3.3l/200CI block has capacity for 80hp per cylinder...That's 480hp.
I have heard talk of 400hp powerheads running in testing..
But the reality is reliability.... BRP won't let it out until they are confident that Joe Boater will not ruin it due to misuse...
400hp powerhead is nice..but you need to have the other parts to go with it... Will the lower hold up? Drive shaft? Trim system?

You'll see something bigger, but it will be a little while.
BRPs next ETec launch is the mid size- 115/130 v4s and the 150,175, and 200 small block v6s..

I ran this sweet motor all last week... 225HO... Great power, high sped gearcase, LWP, 247hp at the prop. On a 20' basser, 2 people 3/4 tank fuel...78mph! Plenty dangerous 1.85 gears, 28p 3 blade, 6,000rpm...
Attached Thumbnails
Why IO over OB?-truck-stratos.jpg   Why IO over OB?-rooster-tail.jpg  
__________________
Tim Gallagher
MTI / MTI-V
Sales and Marketing Manager
[email protected]
(314)803-8842
Tim G. is offline  
Reply With Quote
Old 05-13-2005, 10:46 AM
  #14
Registered
 
Donzi38ZX's Avatar
 
Join Date: Oct 2002
Location: Whiting, IN
Posts: 761
Default Re: Why IO over OB?

Is it true that is illegal in the US to modify an outboard? Thought I saw that on one of the boards in the past. If so, that may be a minus for those who like to tinker.
Donzi38ZX is offline  
Reply With Quote
Old 05-13-2005, 11:09 AM
  #15
MTI / MTI-V
VIP Member
 
Tim G.'s Avatar
 
Join Date: Jan 2003
Location: Ft. Lauderdale, FL
My Boats: Building boats for you
Posts: 1,760
Default Re: Why IO over OB?

Quote:
Originally Posted by Donzi38ZX
Is it true that is illegal in the US to modify an outboard? Thought I saw that on one of the boards in the past. If so, that may be a minus for those who like to tinker.
Technically it is "not legal" to tamper with anything that can change the emmissions output of any engine that is CARB or EPA rated.
That said, don't touch your 496mags....

So lets say your OB is a 3 star engine and you modify it a bit.. It's fine so long as it still pases 3 star emmissions...
__________________
Tim Gallagher
MTI / MTI-V
Sales and Marketing Manager
[email protected]
(314)803-8842
Tim G. is offline  
Reply With Quote
Old 05-13-2005, 11:36 AM
  #16
Xtreme Cooler Test Dumby
Platinum Member
 
Need-the-Speed's Avatar
 
Join Date: Sep 2001
Location: Watkins Glen, New York
My Boats: 1997 Fountain 24 CS, 2002 31 Fiesta Vee, 2005 Xtreme Cooler ATC
Posts: 1,442
Default Re: Why IO over OB?

Is Cost a factor?? I guess what I'm thinking is that you can get a 496mag h.o (425 h.p) less than you can get the number of of O.B's to equal the same h.p.. How much is a 225 Optimax?....... times two.
I like the sound of both. Something about a set of 2.5's screaming by at 100 mph
Need-the-Speed is offline  
Reply With Quote
Old 05-13-2005, 11:44 AM
  #17
MTI / MTI-V
VIP Member
 
Tim G.'s Avatar
 
Join Date: Jan 2003
Location: Ft. Lauderdale, FL
My Boats: Building boats for you
Posts: 1,760
Default Re: Why IO over OB?

Most 225hp DIs (Opti, Etec, HPDI) will cost about $16k. retail is more like 18k.

What's a 496ho with Bravo priced at.... Yes, less than $32k. But that same boat with twin 225s will be faster and have better holeshot.

Then there's fuel...
The 250 Etec burns about 20gph at WOT with a good load. So thats 40gph for twins. A single 496ho will burn at least 40gph..probably 50.
If we're talking $$$.. Don't even bring up maintenance costs...
__________________
Tim Gallagher
MTI / MTI-V
Sales and Marketing Manager
[email protected]
(314)803-8842
Tim G. is offline  
Reply With Quote
Old 05-13-2005, 11:48 AM
  #18
Registered
 
Join Date: Feb 2001
Location: houston tx
Posts: 935
Default Re: Why IO over OB?

Rumor has it Merc is testing a 400hp + verado.

Its a little heavy but still lighter than a V-8
yahoo is offline  
Reply With Quote
Old 05-13-2005, 12:30 PM
  #19
MTI / MTI-V
VIP Member
 
Tim G.'s Avatar
 
Join Date: Jan 2003
Location: Ft. Lauderdale, FL
My Boats: Building boats for you
Posts: 1,760
Default Re: Why IO over OB?

Quote:
Originally Posted by yahoo
Rumor has it Merc is testing a 400hp + verado.

Its a little heavy but still lighter than a V-8
I have heard like rumors...
I also heard that they have a big block Verado in the works.
The current engine is a 2.6l... It would never support 400hp...
Hopefully their new version will be less dependant on the supercharger.

A little heavy???? A little? The whale is about 160lb heavier than a DI two stroke.
It would be conceivable to build a 2 stroke V8 Ob...in say 4.5 liter and still be lighter than the current 2.6l Verado.

If I was Merc, which I'm not, I'd put more work into their Optis and 250XS.. They have potential to be great motors.
__________________
Tim Gallagher
MTI / MTI-V
Sales and Marketing Manager
[email protected]
(314)803-8842
Tim G. is offline  
Reply With Quote
Old 05-13-2005, 12:33 PM
  #20
Registered
 
hillbilly24's Avatar
 
Join Date: Oct 2004
Posts: 1,358
Default Re: Why IO over OB?

I was jusy over in the tech secyion and there is an arguement going on over there about Carbs VS EFI. This is a simialiar argument if you ask me. As I said over there, it's like comparing a Ferrari to a 1 ton pickup truck. They both have their place and purposse. As far as cost, when you add it all up, they are pretty even in the long run and the O/B may even be just a little cheaper. Higher initial cost for the same power, but less cost over time for alot less cost over time for fuel and maintenance. O/B and I/O HP are not realy comprable numbers either. A 225 O/B will move the same boat alot faster than a 225 HP I/O would.
hillbilly24 is offline  
Reply With Quote
Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 09:34 PM.


Copyright 2011 OffShoreOnly. All rights reserved.