diffrence between 2 stroke and 4 stroke? for science project

hitace

Petty Officer 1st Class
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390
Re: diffrence between 2 stroke and 4 stroke? for science project

"Direct Fuel Injection) engines, and they are the most efficient, quietest and cleanest burning 2 stroke engines in the world"

this was true to just recently untill the evinrude etec which are much cleaner (they got 3 stars from the EPA and dfi only got 2) now the etec is the most efficient, quietest and cleanest burning 2 stroke engines in the world.heres there site
http://www.evinrude.com/
 

hitace

Petty Officer 1st Class
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May 4, 2007
Messages
390
Re: diffrence between 2 stroke and 4 stroke? for science project

One other point for you to consider, a lot of countries are banning two stroke outboards and insisting on 4 stroke. Some even ban any commercial operation from running on petrol totally and insist they run on diesel (Australia).<br />You could add to the project by a small item on local fuel laws.<br />Ross

oh thats a myth my friend they only bann outboards on how much pollution they make not weather or not there 2 stroke or 4 now that they have the etec (cleaner then even a 4 stroke) alot of places will only allow etecs on the lake and they have police looking for 4 strokes and carb 2 strokes on them lakes
 

JB

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45,907
Re: diffrence between 2 stroke and 4 stroke? for science project

Say, OMC. Is the E-tec not a DFI 2 stroke engine?

The E-tec advantage over some other DFI 2 strokes is that it stratifies the charge, allowing leaner burn and almost eliminating scavenging losses, but it is included in my description of DFI 2 strokes.

DFI, stratified charge 4 stroke engines are more fuel efficient and cleaner burning than E-tec DFI 2 strokes. They are just beginning to show up in the automotive field.

You sound like BRP, exaggerating the benefits of the E-tec and bashing all else.

"oh thats a myth my friend they only bann outboards on how much pollution they make not weather or not there 2 stroke or 4 now that they have the etec (cleaner then even a 4 stroke) alot of places will only allow etecs on the lake and they have police looking for 4 strokes and carb 2 strokes on them lakes."

I don't believe a word of that, OMC. How about some verification?
 

Bob_VT

Moderator & Unofficial iBoats Historian
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Re: diffrence between 2 stroke and 4 stroke? for science project

2 years later.........:p :confused:
 

hitace

Petty Officer 1st Class
Joined
May 4, 2007
Messages
390
Re: diffrence between 2 stroke and 4 stroke? for science project

Say, OMC. Is the E-tec not a DFI 2 stroke engine?

The E-tec advantage over some other DFI 2 strokes is that it stratifies the charge, allowing leaner burn and almost eliminating scavenging losses, but it is included in my description of DFI 2 strokes.

DFI, stratified charge 4 stroke engines are more fuel efficient and cleaner burning than E-tec DFI 2 strokes. They are just beginning to show up in the automotive field.

You sound like BRP, exaggerating the benefits of the E-tec and bashing all else.

"oh thats a myth my friend they only bann outboards on how much pollution they make not weather or not there 2 stroke or 4 now that they have the etec (cleaner then even a 4 stroke) alot of places will only allow etecs on the lake and they have police looking for 4 strokes and carb 2 strokes on them lakes."

I don't believe a word of that, OMC. How about some verification?


if you would like some verification on the 2 stroke myth click here http://www.evinrude.com/en-US/ then go to E-tec challenges then go to emissions. if you would like some verification on how there are certin lakes that allow etec ONLY and how they have police looking for non etecs on them lakes then go to testimonials then click lake tahoe.hope that makes you happy
 

JB

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Re: diffrence between 2 stroke and 4 stroke? for science project

BRP is notorious for exaggeration, OMC, and they are also notorious for bashing the competition. That is why I would not buy a BRP product.

I do not dispute that the E-tec is the cleanest outboard in the current market, nor do I dispute that some places ban outboards that do not meet the Kalipornia emission standards whether they are 2 or 4 stroke. However. . .

What "certain lakes" are you referring to? Are any of them outside Kalipornia? When did Lake Tahoe become "a lot of places"? What law specifies E-tec as the only allowed outboards? Does that law also ban all inboard and I/O engines? Are the "cops" hunting them, too?

Do not present links for someone else to go looking for verification of your wild claims. Present your verification here.
 

QC

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Mar 22, 2005
Messages
22,783
Re: diffrence between 2 stroke and 4 stroke? for science project

That would be California there Mr. Techsin! :p :) I agree that the 4 stroke thing is mostly a myth, but there are still some isolated lakes that didn't get the memo . . . Helps keep nice used 2 stroke prices reasonable here.
 

JB

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Re: diffrence between 2 stroke and 4 stroke? for science project

Don't take it personally QC. I am just needling the snake oil salesman.
 

QC

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Mar 22, 2005
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Re: diffrence between 2 stroke and 4 stroke? for science project

Roger, and I wasn't, just throwin' a little back atcha . . . I always stick up for California as it gets beat up plenty. There is a reason that a 2500 sq ft home can fetch $1M around here ;)
 

Limited-Time

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Re: diffrence between 2 stroke and 4 stroke? for science project

Roger, and I wasn't, just throwin' a little back atcha . . . I always stick up for California as it gets beat up plenty. There is a reason that a 2500 sq ft home can fetch $1M around here ;)

Supply and demand???:p:p:D
 

JB

Honorary Moderator Emeritus
Joined
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45,907
Re: diffrence between 2 stroke and 4 stroke? for science project

Nah. It's a conspiracy by big real estate to gouge the little guy. :)
 

Vlad D Impeller

Commander
Joined
Mar 30, 2005
Messages
2,644
Re: diffrence between 2 stroke and 4 stroke? for science project

My 2 stroke is better than your 4 stroke which is better than his 2 stroke that is better than mine. ;)

I once thought that Muttly was bad, sorry Mutt.
BTW, where are you?
 
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