Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-15-2014, 01:53 AM   #1 (permalink)
EcoModding Lurker
 
BikerModder's Avatar
 
Join Date: Jul 2011
Location: Virginia
Posts: 45

Deedee - '09 Smart ForTwo Pure 999cc
90 day: 47.39 mpg (US)
Thanks: 4
Thanked 1 Time in 1 Post
Premium Fuel Hack

For Ecomodder Members

Just transfer an efficiency mod or fabricate your spark plugs or your new platinum plugs to increase fuel savers efficiency. Remember new platinum plugs go 100k miles before having to be inspected in most cars.

Just... If you plan this when you need new plugs you will have to pay for your new plugs and it will seem like you are risking your money but after a year or by your next oil change it won't seem like much. I am having great success with this mod in my Smart car after 1 year. Horsepower was not the goal but I can't really tell just a different feel with premium. It does have the power. But I try to save fuel with each tankful. But I am not doing that great with the bigger cars.


Last edited by BikerModder; 03-11-2016 at 09:05 PM.. Reason: make it more readable
  Reply With Quote
The Following User Says Thank You to BikerModder For This Useful Post:
RustyLugNut (08-15-2014)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-15-2014, 02:39 AM   #2 (permalink)
Master EcoModder
 
Join Date: Nov 2012
Location: San Diego, California
Posts: 982
Thanks: 271
Thanked 385 Times in 259 Posts
Interesting.

I would like to know the thoughts behind this.
  Reply With Quote
Old 08-15-2014, 12:49 PM   #3 (permalink)
MPGuino Supporter
 
t vago's Avatar
 
Join Date: Oct 2010
Location: Hungary
Posts: 1,807

iNXS - '10 Opel Zafira 111 Anniversary

Suzi - '02 Suzuki Swift GL
Thanks: 828
Thanked 708 Times in 456 Posts
so... this mod increases effective combustion chamber volume by removing a section of spark plug thread, thereby lowering efficiency by lowering the compression ratio. Also, there is more of a chance of incomplete combustion, due to the odd shape of the cut-out spark plug with respect to the cylinder head.

I think I'll pass.
  Reply With Quote
Old 08-15-2014, 01:04 PM   #4 (permalink)
Master EcoModder
 
cowmeat's Avatar
 
Join Date: Jan 2014
Location: South Carolina
Posts: 1,658

Princess Carriage - '20 Ford Explorer Limited

Silver - '22 Ford Maverick Hybrid XLT w/tow pkg
Maverick Hybrids
90 day: 41.3 mpg (US)
Thanks: 128
Thanked 763 Times in 460 Posts
That diagram looks less scientifically correct than my wheel skirt installation, and one of my main tools for the installation was BEER!

Reminds me of the time machine from Napoleon Dynamite "wait, you forgot the crystals"

All fun and games until the rest of the plug breaks off and falls into the cylinder
__________________

  Reply With Quote
Old 08-15-2014, 01:55 PM   #5 (permalink)
EcoModding Lurker
 
Join Date: Jul 2014
Location: Eagan, Minnesota
Posts: 26

Optima Hybrid - '13 Kia Optima LX Hybrid
90 day: 33.02 mpg (US)

Outlander - '15 Mitsubishi Outlander SE AWD
90 day: 25.17 mpg (US)
Thanks: 8
Thanked 26 Times in 10 Posts
  Reply With Quote
Old 08-15-2014, 02:08 PM   #6 (permalink)
EcoModding Lurker
 
BikerModder's Avatar
 
Join Date: Jul 2011
Location: Virginia
Posts: 45

Deedee - '09 Smart ForTwo Pure 999cc
90 day: 47.39 mpg (US)
Thanks: 4
Thanked 1 Time in 1 Post
Quote:
Originally Posted by t vago View Post
so... this mod increases effective combustion chamber volume by removing a section of spark plug thread, thereby lowering efficiency by lowering the compression ratio. Also, there is more of a chance of incomplete combustion, due to the odd shape of the cut-out spark plug with respect to the cylinder head.

I think I'll pass.
I know but I think I should know the difference.

Update: after 15000 miles running regular unleaded. Just ok.

Last edited by BikerModder; 03-11-2016 at 08:25 PM..
  Reply With Quote
Old 08-15-2014, 02:19 PM   #7 (permalink)
herp derp Apprentice
 
Join Date: Oct 2008
Location: Lawrence, KS
Posts: 1,049

Saturn-sold - '99 saturn sc1
Team Saturn
90 day: 28.28 mpg (US)

Yukon - '03 GMC Yukon Denali
90 day: 13.74 mpg (US)
Thanks: 43
Thanked 331 Times in 233 Posts
A similar plug with a shorter reach might be an easier and safer alternitve to modifying the plug, and it would remove a greater volume(but still probably less than 1cc) The electrode wouldn't be as exposed, the odd shape of the combustion chamber could be an issue as noted by t vago. any way of doing this would leave the threads of the spark plug hole exposed which could cause a hot spot, creating the problem you were tring to avoid
  Reply With Quote
The Following User Says Thank You to 2000mc For This Useful Post:
Cobb (08-15-2014)
Old 08-15-2014, 02:21 PM   #8 (permalink)
MPGuino Supporter
 
t vago's Avatar
 
Join Date: Oct 2010
Location: Hungary
Posts: 1,807

iNXS - '10 Opel Zafira 111 Anniversary

Suzi - '02 Suzuki Swift GL
Thanks: 828
Thanked 708 Times in 456 Posts
Quote:
Originally Posted by BikerModder View Post
Not actually! Premium engines burn the fuel slower during detonation...because you want to avoid predetionation if you ever tried this in an old corvette.. This is just to keep from taking the heads off your engine to put a thicker gasket. The only known other way to prevent predetonation due to high compression. Therby be as exact as you want. Now that is a heads job.
... did you even READ what I wrote? "...this mod increases effective combustion chamber volume by removing a section of spark plug thread, thereby lowering efficiency by lowering the compression ratio..."

BTW, premium fuels do not "burn slower" as such - they are merely more resistant to spontaneous combustion due to elevated pressures/temperatures.
  Reply With Quote
Old 08-15-2014, 03:11 PM   #9 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 12,393

Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.68 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 4,189
Thanked 4,378 Times in 3,353 Posts
I run regular fuel in my premium spec'd car without issue. The car retards the timing a little to compensate for the loss in octane.

I don't see how reducing the compression ratio is more efficient than letting the ECU control the timing advance.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
The Following User Says Thank You to redpoint5 For This Useful Post:
mcrews (12-09-2014)
Old 08-15-2014, 04:18 PM   #10 (permalink)
EcoModding Lurker
 
BikerModder's Avatar
 
Join Date: Jul 2011
Location: Virginia
Posts: 45

Deedee - '09 Smart ForTwo Pure 999cc
90 day: 47.39 mpg (US)
Thanks: 4
Thanked 1 Time in 1 Post
Quote:
Originally Posted by t vago View Post
... did you even READ what I wrote? "...this mod increases effective combustion chamber volume by removing a section of spark plug thread, thereby lowering efficiency by lowering the compression ratio..."

BTW, premium fuels do not "burn slower" as such - they are merely more resistant to spontaneous combustion due to elevated pressures/temperatures.
Well here you have it. I am getting remarkable results while driving my car through the Blue Ridge Mountains I have no pinging. It is much cheaper and I won't change my story... Though don't know why... I did. I remember that I ought to at least remember that I did.


Last edited by BikerModder; 08-17-2014 at 01:41 AM.. Reason: typo edit
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com