Bernico 21 - Evinrude V8 300hp

[Toffy]

Originally Posted by LIQUID NIRVANA

[url]
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PS: If you wanna build a red hot reliable V6 EVINRUDE/JOHNSON EFI (Dyno 380hp) it is now possible.
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Very nice avatar Liquid !!
How do you built a reliable V6 Johnyrude of 380hp ??
Got any website or other info on this ? (Just out of interest, I'm not gonna actually do this... )

[Irapesheep]

OMG thnx Nirvana, i really like those motors.

Do you have one of your own? They are not widespread i presume?

I think building a V6 to 380hp specs will not mean it will live long.

What are attainable numbers for a standard production V8?

[LIQUID NIRVANA]

First check out my site: 6400 hits in the past 5 days. A private pictoral site for OMC & BRP.

http://community.webshots.com/user/LIQUIDNIRVANA

When I am able I will PM you direct so you can check it out. Believe me it IS true. The OLDER looper V6 have a HUGE potental. It just has never been tapped. Technology can now do it. Dyno figures are 380hp @ 8200. I WILL be in touch when the time is right. There has been much info hidden for too many years. Another thing , keep an eye on those Evinrude E-Tecs. They are the way of the future. So much potental. But just remember that the world is in the environmental 'green' era now. Rules on performance engines have changed. EPA says if you want to go REALLY quick you have to not leave any pollution trail. Most manufactures spent mega millions going 4 stroke. E-Tec stayed with the 2 stroke & have smoked the 4 stroke. They are cleaner, lighter, just as quiet & cheaper to maintain. Legendary factory backup as well. Things are going to get very interesting over the next year or two.

PS. Regarding the weight of the original V8 Johnson Evinrude. For years we have been told how HEAVY they were. No one ever bothered to check. Truth is the recent Merc 225 hp 2 stroke is only around 11 pounds lighter than the original V8's. After hearing that check the weight of the current four strokes. They make the V8 look like a helium balloon. Don't believe anything you read. Always check it out.

PPS. Regarding your question on attainable numbers for the V8. With Latest technology advances added the 1980’s 3.5 liter V8 motor puts out a smooth reliable 450+ horsepower and will absolutely sing to the 10,600 rpm range. Without NOS. It has brutal acceleration. AND very reliable.

Look carefully at my site. It has some really good info. I'm sure it will open your eyes as to the misinformation that has been around for years. There is a lot more to come.

[Wild Thing]

Hate to burst your bubble
http://www.mercurymarine.com/rude_awakening

[LIQUID NIRVANA]

[QUOTE=LIQUID NIRVANA;98434]

http://community.webshots.com/user/LIQUIDNIRVANA

But just remember that the world is in the environmental 'green' era now. Rules on performance engines have changed. EPA says if you want to go REALLY quick you have to not leave any pollution trail. Most manufactures spent mega millions going 4 stroke. E-Tec stayed with the 2 stroke & have smoked the 4 stroke. They are cleaner, lighter, just as quiet & cheaper to maintain. Legendary factory backup as well. Things are going to get very interesting over the next year or two.

Sorry mate, no BUBBLES here. Just COMMON SENSE

Compared to other 2 strokes, E-Tec has a better & more efficient fuel direct injection system with NO EXTERNAL ADD ON Compressors & NO BELTS. The ignition system and Electronic Management Module (EMM) DOES NOT require a battery to activate or run it. Let me give you a scenario. There you are out at sea doing some fishing. Radio on, you know just chillin out. Go to start your engine, Uh Oh, battery is flat. No worries with the E-Tec, Just take the motor cover off, wind a rope around the flywheel, turn on the ignition & yank the rope. One solid pull should do. No choke or priming required. Put the cover back on & away you go. As for the four strokes, many of them require 2 batteries to start them. No way you can start most of them without a very good battery(s).

[Wild Thing]

Would love to see you start a V6 johny-rude with a rope

[Jon Fuller]

Dunno about the johnny-rudes, but I've started plenty of welfare V6's wth a rope start. No trouble at all.

[LIQUID NIRVANA]

Thank you Jon. And you are right it is EASY. And at least with an E-Tec you have the option even if the battery is completely stuffed & non usable. Anything is better than waiting for a tow in a storm with no battery & possibly no radio.

[Toffy]

Previous owner rope-started my 140hp Evinrude V4 sometimes, (due to a small problem with the startermotor he couldn't solve). He told me this wasn't easy, but indeed possible !! In my limited experience this V4 engine is a pretty tough cold starter. When engine is warm no problem at all... (huuuuge difference !)

Don't have experience in rope-starting V6's or V8's. But I think it would be not that easy getting the 6 or 8 cils going when engine is cold...

All this is a bit off-topic. I 'd like to know more on the potential of those V6 loopers... I'm getting some info this week on the tuning of the 300hp V6 engine in this thread. Never heard before of a tuning upto 380hp and still call it 'reliable'... How can we define 'reliable' ? Preventive rebuilt every 100 hours ??....
Don't know, but I'm more than curious, that's for sure

[bigboy]

Originally Posted by Toffy

Previous owner rope-started my 140hp Evinrude V4 sometimes, (due to a small problem with the startermotor he couldn't solve). He told me this wasn't easy, but indeed possible !! In my limited experience this V4 engine is a pretty tough cold starter. When engine is warm no problem at all... (huuuuge difference !)

Don't have experience in rope-starting V6's or V8's. But I think it would be not that easy getting the 6 or 8 cils going when engine is cold...

All this is a bit off-topic. I 'd like to know more on the potential of those V6 loopers... I'm getting some info this week on the tuning of the 300hp V6 engine in this thread. Never heard before of a tuning upto 380hp and still call it 'reliable'... How can we define 'reliable' ? Preventive rebuilt every 100 hours ??....
Don't know, but I'm more than curious, that's for sure

Pump the throttle a few times in before starting. My 140 always starts pretty fast. If i dont pump the throttle than she is a bit stubborn and starts bad It's typical for a V4. Maybe for the v6 and v8 too but no idea about that

["Old beardy"]

Originally Posted by Jon Fuller

Dunno about the johnny-rudes, but I've started plenty of welfare V6's wth a rope start. No trouble at all.

I have started my XR2 with a rope before now.

[Matt]

Irrespective of marketing spin, I like the design of the rudes.

The etec system, IMVHO, is superior to that of the opti's. Which system is ultimately capable of producing a leaner burn, I dunno, but they'll both be pretty close I suspect. It is worth noting the the opti's I checked out are 2 star carb, the etec is 3. I couldn't find a reference to what the difference in this rating is though.

The simplicity of the etec injection system, ie not needing a seperately mounted, belt driven, air compressor makes it a nicer design. Having the capability to hand start is also good, especially on the smaller motors. I always consider any air driven system on saltwater motors begging for corrosion to play havoc - am keen on seeing what happens when verados start to age, whether the supercharger holds up.

Where rude are lacking at the moment, again IMVHO is not in the powerhead, but in the mid section & gearbox packages.

[scottyboy]

Originally Posted by Matt

Irrespective of marketing spin, I like the design of the rudes.

The etec system, IMVHO, is superior to that of the opti's. Which system is ultimately capable of producing a leaner burn, I dunno, but they'll both be pretty close I suspect. It is worth noting the the opti's I checked out are 2 star carb, the etec is 3. I couldn't find a reference to what the difference in this rating is though.

The simplicity of the etec injection system, ie not needing a seperately mounted, belt driven, air compressor makes it a nicer design. Having the capability to hand start is also good, especially on the smaller motors. I always consider any air driven system on saltwater motors begging for corrosion to play havoc - am keen on seeing what happens when verados start to age, whether the supercharger holds up.

Where rude are lacking at the moment, again IMVHO is not in the powerhead, but in the mid section & gearbox packages.

Are there plans for any shorter mids for the evinrude's?

[Matt]

I made some enquiries - there were some rumours a while back, but I can't find out anything, and the contact forms on the evinrude homepage don't seem to work. I believe a few guys have put etec powerheads on older mids, but obviously for "us", this is of no use.

What you really need is a spare engine - I know just the one !

[sterling]

Another nice thing they offer is a serie MFE (multi fuel engines)
These engines could run on gasoline ,diesel,jet fuel/kerosine.
with the flip of a switch.

They could do that ,because injecting the diesel after the exhaust is shut,compression starts to rise ,and temperatures are going up,so they inject and ignites with the spark,it is not self igniting.
they just have different fuel maps/ignition maps build into the ECM.
The output is about the same ,there is no detonating ,cause it is a controlled ignition.
For now these are only for the army ,marine ,sinds all their equipment is running on diesel/jetfuel.
It would probably take a while ,but it is coming.(sorry I just found out it is already recreational)
I thought they start at 50 hp to 200 hp for now.

sterling

[Tony Davis]

Originally Posted by Matt

What you really need is a spare engine - I know just the one !

I (may) need a powerhead.

[Matt]

Got a lovely one built by Mr Barsch, std size pistons, in a crate.

[Tony Davis]

Originally Posted by Matt

Got a lovely one built by Mr Barsch, std size pistons, in a crate.

cool, 250hp + then.

[scottyboy]

Originally Posted by Matt

I made some enquiries - there were some rumours a while back, but I can't find out anything, and the contact forms on the evinrude homepage don't seem to work. I believe a few guys have put etec powerheads on older mids, but obviously for "us", this is of no use.

What you really need is a spare engine - I know just the one !

I was told as you say that you can get a "spacer" and obviously something to convert the crank to make the rude's fit to merc mid sections but as you say there not homologated!

Have got spare powerhead but i want to do some internationals if i can so gonna start saving for either an opti or wait and see what happens with the rude's? Are you goin for the opti matt?

[scottyboy]

Originally Posted by Matt

Got a lovely one built by Mr Barsch, std size pistons, in a crate.

How much matt?