Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-26-2016, 01:08 AM   #1 (permalink)
OWL
EcoModding Lurker
 
Join Date: Jun 2009
Location: MISSISSIPPI
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Engine build for MPG

After nearly 300k my 2001 Camry engine laid down. It was using oil. I was getting 45mpg total overall efficiency. I'm good at engine rebuilding. Well experienced anyway How should I rebuild the engine for Max MPG?
Thanks
OWL

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-26-2016, 02:38 AM   #2 (permalink)
EcoModding Lurker
 
Join Date: May 2016
Location: Canada
Posts: 24
Thanks: 13
Thanked 0 Times in 0 Posts
Wow!! it's not common to see 45mpg for a Camry. Any mod on this car ?
  Reply With Quote
Old 07-26-2016, 07:49 AM   #3 (permalink)
OWL
EcoModding Lurker
 
Join Date: Jun 2009
Location: MISSISSIPPI
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by ST2008 View Post
Wow!! it's not common to see 45mpg for a Camry. Any mod on this car ?
Drafting and 55MPH with 50# tire pressure and belly pan.
The scan-gauge shows 45mpg total fuel efficiency. Calculator at the pump 34mpg.
  Reply With Quote
Old 07-26-2016, 09:52 AM   #4 (permalink)
Master EcoModder
 
Join Date: Jun 2016
Location: WV
Posts: 1,165

IGL - '04 Saturn Ion
Team Saturn
90 day: 56.19 mpg (US)

grayOS (personal use) - '19 Mitsubishi Outlander Sport ES
90 day: 30.71 mpg (US)
Thanks: 55
Thanked 282 Times in 218 Posts
Well, anything that can be done to improve the volumetric efficiency of your engine should improve your fuel efficiency... I would start by raising your compression ratio, match it to the fuel you want... Lots of people can run engines in the 11:1 range on pump fuel(though 91 octane)... After that get some cams ground which move power lower in the rev range(lower lift and duration), and you might see about porting the head/intake manifold, though it might prove harmful to FE...
__________________
My current Ecotec project...


My last Ecotec project...
  Reply With Quote
Old 07-26-2016, 10:42 AM   #5 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 659 Times in 474 Posts
Quote:
Originally Posted by OWL View Post
Drafting and 55MPH with 50# tire pressure and belly pan.
The scan-gauge shows 45mpg total fuel efficiency. Calculator at the pump 34mpg.
Then your getting 34mpg.

Not sure what screen "total fuel efficiency" is.

If your scan gauge is properly adjusted, then your scan gauge mpg and hand calculated mpg will be within 10% of each other.
__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 07-26-2016, 11:07 AM   #6 (permalink)
home of the odd vehicles
 
rmay635703's Avatar
 
Join Date: Jun 2008
Location: Somewhere in WI
Posts: 3,331

Silver - '10 Chevy Cobalt XFE
Thanks: 351
Thanked 665 Times in 497 Posts
If you want to make a complete build out of this thing, toyo has smaller motors and manual transmissions

Heck someone got a prius motor (not the hybrid part) to run stand alone.

Just a hint.
  Reply With Quote
Old 07-26-2016, 01:10 PM   #7 (permalink)
Master EcoModder
 
Join Date: Feb 2014
Location: Missoula, MT
Posts: 2,152

Dark Egg - '12 VW Touareg TDI Sport AWD
90 day: 25.81 mpg (US)
Thanks: 194
Thanked 905 Times in 622 Posts
My brother and I test drove a 2007 Camry 4 cylinder, manual. I didn't know they were still making stick Camrys that generation. I have no doubt it could get your 34 mpg. It had 66k on it and was $9000. He ended up getting a 2013 Focus with a stick and 98k for $6700. I think that car could get the 45 mpg driven right, grill shutters, 2.0 direct injection, variable valve timing, etc. Anyway, I think you could rebuild the camry but anything different then stock is going to cost more then you ever get back. Get big gains by selling it and getting something more modern.
  Reply With Quote
Old 07-26-2016, 02:59 PM   #8 (permalink)
OWL
EcoModding Lurker
 
Join Date: Jun 2009
Location: MISSISSIPPI
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
Thumbs up

Quote:
Originally Posted by mcrews View Post
Then your getting 34mpg.

Not sure what screen "total fuel efficiency" is.

If your scan gauge is properly adjusted, then your scan gauge mpg and hand calculated mpg will be within 10% of each other.
Professional OBD-II Scan Tool is what I'm using.
https://amzn.to/2OuZfwf

I was only measuring Highway MPG Not trying to cheat but that was the only way I could tweak the efficiency. I just started Hypermiling . I have a 2001 insight on the way. Which couldn't be soon enough with the camry down.
My V6 Escape suprised me today on my 180m commute it got 27.4mpg calculated at the pump. It has new Cooper AT3s "big tires" I had been getting 22mpg "tire pressure?" after the new tires. I was getting 26mpg on low test with the old tires. I added half a tank of Shell V-Power NiTRO+ Premium Gasoline and pumped up the tires to 44# from 30#. Wow what a difference the Shell made. If it continues I'll write a thread about the Shell V-Power .
OWL
  Reply With Quote
Old 07-26-2016, 03:57 PM   #9 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 659 Times in 474 Posts
Quote:
Originally Posted by OWL View Post
Professional OBD-II Scan Tool is what I'm using.
https://amzn.to/2OuZfwf

I was only measuring Highway MPG Not trying to cheat but that was the only way I could tweak the efficiency.OWL

Got it!!!!
I did the same w my 2002 Infiniti Q45S.
I did 40k a year on the road and wasn't really concerned about my intowm mpg. I adjusted the nut behind the wheel, but didn't try to measure it.
But on the highway, I was all about mpg.
Belly pan, taller tires, driving 60mph.
THe only thing I would sacrifice was the a/c!!
__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 07-26-2016, 06:36 PM   #10 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 17,560
Thanks: 4,739
Thanked 5,845 Times in 4,662 Posts
Quote:
How should I rebuild the engine for Max MPG?
Thanks
OWL
I think you question deserves an answer:
  • Blueprinted for clearances and balance.
  • Wear surfaces cryogenically tempered prior to machining.
  • Exterior surface with heat-rejecting aerospace coatings.
  • Combustion chamber surfaces (head, cylinder valve heads.) coated with ceramic heat-proof coatings.
  • Piston skirts, rings and bearings with low-friction aerospace coatings.
  • Anti-reversionary headers and everything everyone else has suggested.
You can price that all out, calculate the ROI and have a sad.

  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
ChillyBear (07-27-2016)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com