EVINRUDE E-TEC Questions

**2.5-21** · 11-02-2018, 11:11 AM

Does anyone have any factual specs on them?

What is actual HP of a 225 250 300 ?

What is optimal rpm ?

I don't see many for sale or even used in a performance application but hear good things when I do.

Do lower units hold up with large props on them?

Are there any gear ratio options?

**Will hedrick** · 11-02-2018, 04:07 PM

Best of my knowledge with the 10% allowed by federal law the 250 ho puts out about 265 hp. Not sure of the 300 as I myself want mine remapped to 300 specs. As for my motor it does not like low rpms,(3500 or less) due to the computer being water cooled, it will overheat easy. The magnum 2 is the lower I have,(synthetic gear oil could add up to 300 rpm)turns 6400, modded with nose cone and pinned carrier bearing, gearing not as high as the lightning, but it does have a fat shaft.i have no prob turning a 28 trophy 2 or a 30 et, omcs always liked a little larger props than mercs. To the best of my knowledge.hope this helps..

**baja200merk** · 11-05-2018, 08:38 AM

The 3.4 makes 278 and has a bunch of grunt. The cases are strong but they are big so they need to be water pickups modded and to run high. We run 1.62 sportmaster on them for boats faster than 80 they work great. Mine is not stock but it’s been 114 with a small prop I’ve made some changes since then need to go make a real pass should be close to 120 with this small prop. I’ve got a 36 that usually runs 10mph faster than the 30. Big blocks don’t like high rpm peak power is low but it turns the 30 7300 pretty quick.

**powerabout** · 11-05-2018, 08:58 AM

how does your 3.4 etec do 7300?

**baja200merk** · 11-06-2018, 12:30 PM

Race map from monty racing

**Greg G** · 11-06-2018, 01:46 PM

Originally Posted by 2.5-21

ETEC - Does anyone have any factual specs on them? What is actual HP of a 225 250 300?

Originally Posted by baja200merk

The 3.4 makes 278 and has a bunch of grunt. The cases are strong but they are big so they need water pickups modded and to run high. We run 1.62 Sportmaster on them for boats faster than 80 they work great.

At what RPM have you found a stock 3.4 to make the 278hp? Good info, thanks.

**baja200merk** · 11-06-2018, 03:36 PM

The 300 and 250HO were both rated at 5150 then later rated at 5600. Not sure why depended on model suffix. Both made nearly identical peak power ~278hp according to “insiders” who I won’t mention

**Will hedrick** · 11-07-2018, 07:50 AM

Originally Posted by baja200merk

The 300 and 250HO were both rated at 5150 then later rated at 5600. Not sure why depended on model suffix. Both made nearly identical peak power ~278hp according to “insiders” who I won’t mention

Do you know where I can get a 300 computer for my 2012 250, want to flash and remap to 300 specs?

**Greg G** · 11-07-2018, 07:52 AM

Originally Posted by baja200merk

The 300 and 250HO were both rated at 5150 then later rated at 5600. Not sure why depended on model suffix. Both made nearly identical peak power ~278hp according to “insiders” who I won’t mention

Thanks, does the insider start with A and end with R

**baja200merk** · 11-07-2018, 08:57 AM

Originally Posted by Will hedrick

Do you know where I can get a 300 computer for my 2012 250, want to flash and remap to 300 specs?

If it is a 3.3 you won’t benefit from a 300 map. The 300 map is for a 3.4 and requires some porting and mods to support the 100cc extra fuel. We have a 3.3 running 3.4 map successfully with the supporting mods. It is on a 65mph center console we setup with a fresh 3.4 300 All we swapped was the Powerhead to the ported 3.3 and it runs the same speeds. Crude way to test it but he says he doesn’t notice any difference in power and it doesn’t paint the cowl black with soot (like a stock 3.3 did with a 3.4 map) so sounds like it’s burning the fuel.

**Will hedrick** · 11-07-2018, 02:43 PM

Originally Posted by baja200merk

If it is a 3.3 you won’t benefit from a 300 map. The 300 map is for a 3.4 and requires some porting and mods to support the 100cc extra fuel. We have a 3.3 running 3.4 map successfully with the supporting mods. It is on a 65mph center console we setup with a fresh 3.4 300 All we swapped was the Powerhead to the ported 3.3 and it runs the same speeds. Crude way to test it but he says he doesn’t notice any difference in power and it doesn’t paint the cowl black with soot (like a stock 3.3 did with a 3.4 map) so sounds like it’s burning the fuel.

It is a 3.4 2012

**racer** · 11-07-2018, 04:01 PM

Will, changing the map to the 300 will not help.

**Will hedrick** · 11-07-2018, 06:00 PM

Originally Posted by racer

Will, changing the map to the 300 will not help.

Hey bud, I dont doubt ur knowledge, just curious on how I get the limiter up to 7000? I was told that a flash of the limiter would do this, I really dont know what to do just would love to see the limiter at 7000.

**AZMIDLYF** · 11-07-2018, 06:19 PM

Mr. Hendrick, I don't know who bud is, but Racer is someone who has a wealth of knowledge and years under his helmet.

**Will hedrick** · 11-07-2018, 06:30 PM

I'm not trying to be disrespectful sr. I know very well who he is, that's why I value his opinion the most up here, please don't be offended, I will use names in the future. I hope I have not offended you racer, I apologize if so sr.