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  #11  
Old 08-15-2014, 11:41 AM
RidgeRunner RidgeRunner is offline
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Quote:
Originally Posted by gofastsandman View Post
The trick to getting powah outtah 2 smokes is porting and exhaust. Oh and lots of rpm.
In had old rd yammis and you could take them to 10k.

The new 250 HO makes 600 ft lbs of torque. Yes 600.

I would not be surprised if they have seen 350 and 400 hp from these.

These have all intakes starboard and all exhausts port side. You can bet they have pushed these just a tad. The emissions are reduced by 75%. That is impressive.
Love your post GFS (even the ones I can't understand) BUT I Doubt that (600 lb/ft) with all my heart. Unless it were a diesel. AND The very thing that the e-tec's lacked was operating range on the big end..Noone can get past the limiter.
Go fast guys are complaining that they could reach their terminal velocity if they could get the e-tec to turn some more RPM.. Monty being the main man that has taken the e-tec to the next level. (see 130 MPH STV on the Suwannee)
I like that they are trying to develop something NEW.. Because they keep new products coming to market they will eventually make something I need.. Remember it cost dollars cubed to develop and test new product, I will give them chops for that...
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  #12  
Old 08-15-2014, 02:32 PM
FishStretcher FishStretcher is offline
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Quote:
Originally Posted by gofastsandman View Post
The trick to getting powah outtah 2 smokes is porting and exhaust. Oh and lots of rpm.
In had old rd yammis and you could take them to 10k.

The new 250 HO makes 600 ft lbs of torque. Yes 600.

I would not be surprised if they have seen 350 and 400 hp from these.

These have all intakes starboard and all exhausts port side. You can bet they have pushed these just a tad. The emissions are reduced by 75%. That is impressive.
If they do make 600 ft-lb of torque, then they would make 250 hp at 2188 RPM at that torque. Unless that's prop torque. Which would be a bit disingenuous to claim.
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  #13  
Old 08-15-2014, 03:05 PM
Bigshrimpin Bigshrimpin is offline
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G2 styling reminds me of the Chrysler outboards. 1970's Retro!

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  #14  
Old 08-15-2014, 03:32 PM
kmoose kmoose is offline
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I found a store full of the new powerheads!
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  #15  
Old 08-15-2014, 09:38 PM
Bushwacker Bushwacker is offline
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While beauty is in the eye of the beerholder, I suspect that a lot of folks will get used to the looks after they experience the mid-range omph of the new motors! (The propshaft HP/torque measurements from a calibrated eddy current dyno below speak volumes!)

Frankly I think the BRP guys deserve a lot of credit for having the balls to challenge and completely rethink the entire outboard design concept AND for the commitment to spend serious $ for a totally new clean sheet design, including ALL NEW production tooling! I'm sure their beancounters would have been much more comfortable sticking with minor refinements to what are already proven and very competitive designs. Those removable panels will also provide much quicker and easier access to key engine components than the conventional bucket-style engine cover with a 2-piece lower shroud, so while I also prefer the looks of the current motors, I can see some advantages to the new design.
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  #16  
Old 08-15-2014, 11:21 PM
gofastsandman gofastsandman is offline
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Quote:
Originally Posted by FishStretcher View Post
If they do make 600 ft-lb of torque, then they would make 250 hp at 2188 RPM at that torque. Unless that's prop torque. Which would be a bit disingenuous to claim.
Prop numbers.
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  #17  
Old 08-16-2014, 08:13 AM
RidgeRunner RidgeRunner is offline
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I stand amazed, GFS your right as they would have us thinking. Interesting prop shaft torque huh? I'll buy that for a dollar. I think Dave Bush has placed the e-tec on the dyno and they are impressive, but not 600 lb/ft of torque impressive.. They are tractors from the looks of those numbers, midrange is what moves a boat from a standstill. I'd have one if the price was right. Beerholder here.. LOL!
As a staunch Merc Man I take note of the Big Three spanking Mercury on the numbers. Amazing that it doesn't translate on the water tho. HE HE HE!!
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  #18  
Old 08-16-2014, 08:22 AM
cdavisdb cdavisdb is offline
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Very interesting graph! especially at the very low end, where torque is critical (planing slow in the slop). I'd like to see how that compares with a 5.7 V8 I/O.

And yeah, they are ugly as home made sin, but performance cures a multitude of sins.
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  #19  
Old 08-16-2014, 10:53 AM
gofastsandman gofastsandman is offline
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Quote:
Originally Posted by RidgeRunner View Post
Love your post GFS (even the ones I can't understand) BUT I Doubt that (600 lb/ft) with all my heart. Unless it were a diesel. AND The very thing that the e-tec's lacked was operating range on the big end..Noone can get past the limiter.
Go fast guys are complaining that they could reach their terminal velocity if they could get the e-tec to turn some more RPM.. Monty being the main man that has taken the e-tec to the next level. (see 130 MPH STV on the Suwannee)
I like that they are trying to develop something NEW.. Because they keep new products coming to market they will eventually make something I need.. Remember it cost dollars cubed to develop and test new product, I will give them chops for that...
I do so enjoy writing here. I only wish I could see Denny shaking his head whilst reading.

I`d like to see a cut away of the exhaust and the rave valve. I understand it is a gate valve which expands/ opens the exhaust as rpms climb. Note the first funny bump in torque.

It looks like they let me design the graph format re numbers.

So if the lower is 1.85, it looks like 570 ft lbs at 3,170.
600 ft lbs at 3,900 if I guessed well on my homework assignment.
Right where you need it!

Also note it holds 270 hp to 6k rpm.

Now you know why I chose yellow for the Merc curves...
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  #20  
Old 08-17-2014, 07:57 AM
Bryan A. Bryan A. is offline
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Quote:
Originally Posted by Bigshrimpin View Post
G2 styling reminds me of the Chrysler outboards. 1970's Retro!

I used to have one of those!!!

Buy the time I got it the Chrysler motor was shot so we hung a 115 looper on it.

Loved it as a 14. Year old kid. Fast too.
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