Evinrude E-NATION, for those dedicated to water, power, fishing and fun
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Captain
Posts: 108
Registered: ‎09-12-2016

Re: E-TEC 250 G2

[ Edited ]

A lot of the Evinrude literature on the G2 talks about obtaining a perfect stoichiometric ratio very close to ideal 15:1, which uses less fuel. What this really means is less gas is left unburnrt which helps combustion efficiency and emmissions. However this also means that means (to me) is engine is also closer to the edge of running lean, and by the basics of engine design is running hotter. Remaining end gas in the combustion process are used to cool the fuel burn down.

 

i have read some SAE papers produced by Evinrude that clearly state this, I'm not talking about marketing mumbo-jumbo here. For instance look at "Development of a compact intake porting design for a 2 stroke DI outboard" by Paul Westhoff and Dustin Johnston available on papers.sae.org.

 

Let me be clear I bought a G2 knowing this, and I like the design, but it could mean it's more suceptable to things like a lean fuel supply. The engine is an engineering materpiece in my opinion.

 

Regards

 

 

Skipper
Posts: 5
Registered: ‎10-14-2016

Re: E-TEC 250 G2

Thanx for all the info, I talked to my tech this morning and we are going to run some test like you guys sugested.

Next week when the new head is istalled I will keep you posted.

Skipper
Posts: 5
Registered: ‎10-14-2016

Re: E-TEC 250 G2

Thanx for the info, you were very helpful. My tech said it could be aerated fuel.

Captain
Posts: 108
Registered: ‎09-12-2016

Re: E-TEC 250 G2

I'm in the process of rigging up an off-engine Racor fuel filter with a vacuum gauge fitted in one of the ports. This way I can keep an eye on fuel delivery an any rpm. I'll post details when I'm done.
Admiral
Posts: 6,296
Registered: ‎07-14-2011

Re: E-TEC 250 G2


muskiemouth wrote:
I'm in the process of rigging up an off-engine Racor fuel filter with a vacuum gauge fitted in one of the ports. This way I can keep an eye on fuel delivery an any rpm. I'll post details when I'm done.

Be aware that many vacuum gauges are not designed for or approved for gas fuel systems due to the corrosive nature and solvent properties of gasoline. Leakage of fuel in your boat is a dangerous situation.

 

Racor vacuum gauges are not approved for gasoline, only diesel

 

 

 


"There is never just one thing wrong with a boat";
                    -- Travis McGee, main character in a book series by John D. McDonald 


 



***************

The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.


Captain
Posts: 108
Registered: ‎09-12-2016

Re: E-TEC 250 G2

[ Edited ]

I'm aware of that and they aren't officially supported for gas, but there is alot of evidence that they work with gas, but they don't want to officially support this since the market is small.  I can dig up some correspondences that support this. I know of several peoiple doung this.

Captain
Posts: 108
Registered: ‎09-12-2016

Re: E-TEC 250 G2

This is what I'm referring to: (And I don't use ethanol gas which is the harshest solvent in gasoline)

 

"

 

Like many boaters, I too have used this same gauge for about 3-4 years, mostly with E-10 fuel without any sign of a fuel leakage or problem.
  
Racor/Parker tech support has indicated to myself as well as others, that the gauge you are using and their vacuum gauge product lineup had a major design change concerning their internal materials (beryllium copper) over a decade ago improving compatibility in permanent use with gasoline and newly introduced ethanol blended fuels.   Prior to this redesign, there were apparently reports of issues internal to the gauge and its' needle movement.

At least twice in writing since the product's redesign, Parker/Racor, the manufacturer has indicated that their vacuum gauge is "fine for use'  or "OK for use" with marine gasoline systems including E-10 blended fuels.   

But having said that, their intended market for this gauge as SH indicated is for use with diesel fuels and they perhaps deliberately have not  published its' compatibility with gasoline fuel systems.  Their legal department may be concerned about such issues as phase separation issues or a novice user incorrectly sealing the gauges threads and increasing the liability risks in a vacuum gauge market they have few sales to benefit from......gasoline fuel systems in motors being typically pressurized rather than operated at vacuum.
  
It seems reasonable that this gauge should probably not be recommended or installed into marine gasoline fuel systems by professional businesses with liability concerns including Evinrude service facilities.  For many end users though, the gauge seems to be reliable and performing well and offering a benefit in assessing the quality of the boat owner's  fuel system and providing the only correct indicator of when a fuel filter needs changed
.

 

"

 

 

Highlighted
Admiral
Posts: 6,296
Registered: ‎07-14-2011

Re: E-TEC 250 G2

[ Edited ]

muskiemouth wrote:


At least twice in writing since the product's redesign, Parker/Racor, the manufacturer has indicated that their vacuum gauge is "fine for use'  or "OK for use" with marine gasoline systems including E-10 blended fuels.   
 


 

 

 

It is doubtful that Racor a pproved the use of its vacuum gauges for gasoline applications as shown by the 2 separate emails to their technical department.

 

 

 

2016

TO: racortech@parker.com

 

Re: Vacuum Guage RK11-1676E use with Gasoline filters

We see a lot of chatter in  boating forums about the use of a vacuum gauge attached to a Racor filter assembly for gasoline engines, both inboard and outboard.  Many owners talk about installing your vacuum gauge RK11-1676E on the Racor filter bracket to monitor the fuel restriction as the filter traps more and more particles.

 

1 ) Is your vacuum gauge RK11-1676E approved for use with gasoline in a boat ?  

 

2 ) Does it meet the fire testing for fuel components in recreational boats with enclosed gas powered engines, CFR, Title 33,part 183.590 ? 

 

 Thank you.

 

 

 

 

 

Those gauges were never tested with gas, we cannot recommend the for use in

gasoline applications.

 

 Best regards,

 

E-NATION Online Magazine

 

Javier Ceja

 

Contact: Javier A. Ceja

Racor Technical Service Department

Parker Hannifin Corporation

Racor Division

Direct:  209-575-7645

www.parker.com/racor

racortech@parker.com

 

If you would like to be added to the Racor mailing list to keep up to date

on the latest products and promotions, forward your name, company, and

email address to: cinthia.avila@parker.com

 

The latest Racor news, literature and information can be found at

www.racornews.com

 

 

 --------------------------

 

2013 


Is your Vacuum Gauge #RK11-1676E recommended for gasoline and E-10 fuel use such as if mounted on your 320R-RAC-01 gasoline fuel water separator? If it is not approved for gasoline, do you carry or can you recommend a vacuum gauge that is designed for use with regular and ethanol-enhanced fuels? Many boaters are now aware of problems with filters as they near replacement and how the increased vacuum on the fuel system affects the drivability and the longevity of their outboard motors.
 

  Thank you for contacting Racor.  Here is the information requested:
see below.


Best regards,

Mike Noldin
Technical Service Specialist
Parker Hannifin Corporation
Racor Division
(phone) 209-575-5764
(fax) 209-575-5757
email:  mnoldin@parker.com

----- Forwarded by Michael Noldin/RCR/PFG/PARKER on 11/01/2013 11:46 AM -----

From:        Gary Garcia/RCR/PFG/PARKER
To:        Michael Noldin/RCR/PFG/PARKER@PARKER
Date:        11/01/2013 11:39 AM
Subject:        Re: Fw: Racor Vacuum Gauge #RK11-1676E




No, our gages are not recommended for use with gasoline systems.

Best Regards,

Gary Garcia
Manager
Product Engineering Group
Parker Hannifin Corporation
Racor Division
P: (209) 575-7480
F: (209) 575-5733



From: Michael Noldin/RCR/PFG/PARKER
To: Gary Garcia/RCR/PFG/PARKER@PARKER
Date: 10/30/2013 06:45 AM
Subject: Fw: Racor Vacuum Gauge #RK11-1676E

 





----- Forwarded by Michael Noldin/RCR/PFG/PARKER on 10/30/2013 06:45 AM -----

 

 

 


"There is never just one thing wrong with a boat";
                    -- Travis McGee, main character in a book series by John D. McDonald 


 



***************

The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.