Evinrude 300 G2 Etec Exhaust

[Nicoline Searacer 328]

Hi

We are thinking about fitting Exhaust above the water line for our 2 G2 Evinrude from 2015. Any at the forum which have done this before.

Thank you for all replys.

BR:)

[bigbore]

Every rig is different with engine height/start with prop shaft 1-in. Below the pad of the boat at a neutral trim angle/level with the boat.
If you have to much prop slip when boat planes out or to noisy for your liking drop it another in.
If steering the boat is to tight-when on plane-motor is to low.:leaving:

[H2OPERF]

I don't think to many people have done much with the g2s as far as performance goes, guys have put low water pickups on the gear cases and that's the most i have seen around here so far. It appears that it would be very easy to route the exhaust out the back since it has it's own tube and doesn't run thru the mid, but if that's all your going to do and stay on the stock rev limiter its not of much use other than sound cool or obnoxious depending on on the individual. A bad to the bone loud car going sideways makes the hair stand up on my arms, a stock turd camry or accord with no muffler just pisses me off...

[FMP]

Just the factory R&D , 700+ hp.

[H2OPERF]

Who started that crazy rumor....

[Will hedrick]

Speed jr. Has/ had an older e tech that he had done a ton of work on, I believe it was over 7k rev. But I agree, the g2 is a whole nother animal, my 250 g2 was about 4 mph faster then my other 2012 ho, when I called Monty racing, he said I was looking around 40k to cut mid. And work powerhead, on the gen 1, prob stupid numbers to mess with a g2 imo.
And welcome to the s and f house

[FMP]

Just a reliable source, two sled injectors per, wild tune, stock assembly, 9000+ , 770 I believe. Lots of magic.

[H2OPERF]

Would like to see that one, those are some big numbers that v8s with everything done have not made. I have a few blocks i would like to play with some day, open up the aux exhaust ports and case inject it.

[Speed Jr.]

The 74° motor has made crazy numbers on the dyno in house but who cares when it's not available to anyone. The G2 has a lot of features that are not performance oriented. I wouldn't put much effort to modify one with the stock electronics. It would be a better candidate to EFI and use a standard alone system. If you want it loud or to de-vent the prop you'd be better off just porting the gearcase above the cavitation plate and cap it off. My 2 cents.

Jr.

[Chaz]

Just a reliable source, two sled injectors per, wild tune, stock assembly, 9000+ , 770 I believe. Lots of magic.

Personally, I would have went for the three sled injectors , super duper wild tune , stock motor , 11,000 RPM , 1275 HP David Copperfield model .. :rolleyes:

[Dave S]

David Copper Field........Did he not......Righte books in Enland......Phissstttt........:cheers:

[Dave S]

400$$$$ USD.......toooooo cut a mid......Thats me......:rolleyes: I have beeen out of the Looop soooo long:cheers:Due tooo wiskey annnn covid...:rolleyes:

[Dave S]

Hey Chazz.....What is the deflection of a cast iron cam over a billit cam?.........I had toooooo use A flash lite to seee the keys board to post this..........BBC rear...... Mopar front an center.....oil pump twist?????????Thanks.....

[FMP]

The 74° motor has made crazy numbers on the dyno in house but who cares when it's not available to anyone. The G2 has a lot of features that are not performance oriented. I wouldn't put much effort to modify one with the stock electronics. It would be a better candidate to EFI and use a standard alone system. If you want it loud or to de-vent the prop you'd be better off just porting the gearcase above the cavitation plate and cap it off. My 2 cents.

Jr.

We care, ..... they did it and it's awesome.

[Chaz]

Hey Chazz.....What is the deflection of a cast iron cam over a billit cam?.........I had toooooo use A flash lite to seee the keys board to post this..........BBC rear...... Mopar front an center.....oil pump twist?????????Thanks.....

Twist deflection .. not so bad. Mopar's have no room for cam core diameter or very much lift, so you don't need to worry about the real problem ... up and down "bowing" between the cam bearings ... ;)

Chaz = livin across the bridge from the old OMC test center .. still wunderin ... about the big power numbers from the "Gone Too" model .. :rolleyes:

[H2OPERF]

Still wunderin too... It musta been kept super top secret. Not sayin a 3.4 l 2 stroke cant make 750hp.

[Chaz]

If the Rotax / Can-Am guys were still there, I have no doubt that they could build some really good lookin motors that made a bunch of reliable power. He11, they might not have went out of business ..

At 700 HP / 3.4L .. err .. 207.48 ci .. 3.38/inch is askin a lot.

Super gee-whammy tune-up. Big bore stuff can only "tolerate" just so much timing before it starts soundin like my wife drivin up the Palm City bridge .. knock, knock,rattle,rattle .. :rolleyes:

How clean can you get a 2-stroke .. ??? Stoichiometric (14.7) :nonod: Aint happenin ..
And I can't see the sea-doo people .. ehh , spending a bunch of time and effort on a two stroke that needed to be @ 12.5 / 1 to make best use of the fuel load , from their death bed. Great story though .. :)

https://i.imgur.com/gF5bPNjl.jpg

[powerabout]

The 74° motor has made crazy numbers on the dyno in house but who cares when it's not available to anyone. The G2 has a lot of features that are not performance oriented. I wouldn't put much effort to modify one with the stock electronics. It would be a better candidate to EFI and use a standard alone system. If you want it loud or to de-vent the prop you'd be better off just porting the gearcase above the cavitation plate and cap it off. My 2 cents.

Jr.

how about make it a stacker??

[Instigator]

There are rumors of the F-1 car guys looking at 2 stroke.

[powerabout]

If the Rotax / Can-Am guys were still there, I have no doubt that they could build some really good lookin motors that made a bunch of reliable power. He11, they might not have went out of business ..

At 700 HP / 3.4L .. err .. 207.48 ci .. 3.38/inch is askin a lot.

Super gee-whammy tune-up. Big bore stuff can only "tolerate" just so much timing before it starts soundin like my wife drivin up the Palm City bridge .. knock, knock,rattle,rattle .. :rolleyes:

How clean can you get a 2-stroke .. ??? Stoichiometric (14.7) :nonod: Aint happenin ..
And I can't see the sea-doo people .. ehh , spending a bunch of time and effort on a two stroke that needed to be @ 12.5 / 1 to make best use of the fuel load , from their death bed. Great story though .. :)

https://i.imgur.com/gF5bPNjl.jpg




v8 rotax e-tec would be cool the 2cyl 800 is 150 HP
x 4 = 600 emission hp from 3.2ltr.....

[H2OPERF]

The porting arrangements on single/inline and opposed motors are not the same as stacked v motors so i'm not sure you can just roll the hp numbers up with extra cylinders. On the G2 Brp tried to balance the flow by arranging the exhaust on the same sides but on the other hand did not cant the cylinders down and that put the transfers back to back and that made the runners very flat, the 2 rear ports are big and the exhaust ports are nice but the stacks are kinda narrow. I am sure a dedicated race two stroke 6 or 8cyl would make enormous power and like Gary said F1 is looking that way and if they do we will finally see what a 2 Stroke is capable of.. If this g2 ph did exist i cant believe no one has pics and why would they care if they were posted.

[Instigator]

Just read a great, in depth article on 2 strokes in one of my vintage bike mags.
From beginning to bow.

Currently two mfg building DI 2 stroke dirt bikes that pass regs.
I forget which tier though….

Unfortunately the biggest one is only 300cc’s but open the bores and start stacking them!

The article left it open to the future…

[Dave S]

74 Dreggigs.......My old 3.4 is like that.........:rolleyes:Better castin' than OMC lost Corrosion blocks........:cheers: Just pulled apart a 225 OMC...... what Junk.....Nice light rods an' sluggs tho......:cheers:

[powerabout]

The porting arrangements on single/inline and opposed motors are not the same as stacked v motors so i'm not sure you can just roll the hp numbers up with extra cylinders. On the G2 Brp tried to balance the flow by arranging the exhaust on the same sides but on the other hand did not cant the cylinders down and that put the transfers back to back and that made the runners very flat, the 2 rear ports are big and the exhaust ports are nice but the stacks are kinda narrow. I am sure a dedicated race two stroke 6 or 8cyl would make enormous power and like Gary said F1 is looking that way and if they do we will finally see what a 2 Stroke is capable of.. If this g2 ph did exist i cant believe no one has pics and why would they care if they were posted.


Yes sure packaging put the cylinders too close together, how about offset cylinders so they are not on top of each other??

[Chaz]

They more than likely couldn't twist the cylinder because of some patent law infringement. Both side could have came up with some really bad-azz motors if they spent more time at the drawing board than in court .. no , that's my idea, you cant use it.

If they had such a fetish for court rooms, they should have spent their time in there telling the EPA to **** off. The end result is some dumpy lookin porkchops selling for twice what they are worth.

Gator .. KTM is still building 2-stroke dirt bikes. :thumbsup:

They could "stack" 2-stroke cylinders, but with properly sized and shaped transfers, it would make a porky look like shrimphead .. :D

http://p.vitalmx.com/photos/users/46095/setup_checks/46117/photos/11681/s1600_IMG_212830444249577.jpg?1424128117

[Instigator]

Gator .. KTM is still building 2-stroke dirt bikes. :thumbsup:




Yep, one of the ones I was referring to.

Gas Gas is another one.

The other one doing DI is a tiny European co.

[MrG]

Well that big test facility went bankrupt and when it did took every one by surprise because with out telling any one they locked it up they were ready to test Formula 1 Engine 3 years of rd in making it at a reputable shop in Arizona made the engine for Evinrude racing so it was told to me it made 600 + Hp buy the Man who built it and now seems Mercury was behind it to squish the competition after all mercury‘s DFI was Evinrude‘s old motor I knew that at OMC School back in 1994 but they Decided not to bring to production sad Evinrude was a very clean motor . You can check it out no production outboard is as clean or has ever been as clean for the power to wt that they make .. but I do love the raw horsepower of a simple carbureted 3.3 with V8 carbs so it smokes at start up a little that’s why I use DFI oil !!

[H2OPERF]

Your talking a bout a g1 based motor, this Guys talking about a 700+hp g2.

[Speed Jr.]

I have no clue what MrG is talking about.....

[Will hedrick]

I think it's that wenkle motor brp was playing with but never released, heard a lot of people talking about it, but never seen it

[H2OPERF]

I know what he's talking about... it was before the g2.

[Instigator]

Sounds to me like he’s thinking of a DB motor that he read/heard of.

Similar numbers.

[Will hedrick]

I seen the white one with all the intake holes in the front, that was a bad dude

[Nicoline Searacer 328]

Hi

We are thinking about fitting Exhaust above the water line for our 2 G2 Evinrude from 2015. Any at the forum which have done this before.

Thank you for all replys.

BR:)

Evenrude 300 G2 free exhaust. (youtube.com) (https://www.youtube.com/shorts/xGYSWwxVmG4)