Go Back   EcoModder Forum > EcoModding > Success Stories
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-14-2013, 04:41 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Atlanta
Posts: 30
Thanks: 0
Thanked 24 Times in 6 Posts
2005 Prius engine into 1986 MR2: mk1 1nzfxe Prius swap (gas only)

This is a 1nzfxe from a 2005 Prius. Here's a picture of me getting ready to put it in:




Yes, most people will be able to pick this motor up and carry it around. It weighs about as much as an e153, the transmission out of a mr2 mk1SC and mk2 turbo.

Aside from the weight and fuel economy, this is an atkins cycle engine. Well, it has an atkins cycle mode depending on what position the vvti cam is in. I currently have it set for on/off. This gives me two settings. 13:1 compression using the full 1.5L and 6:1 at 750cc's.

Here it is installed:



Just driving it around, it actually feels stronger than the original 4age. This is in the 13:1 1.5L mode of course. The low comp/displacement setting will leisurely pull away from a light flooring it.

Toggling modes manually, I was able to get 37mpg where the various 4age's I've had would get 30, and the beams 3sge would get sub 30. This is running an echo ecu and no o2. Really a tune just good enough to run and drive.

  Reply With Quote
The Following 17 Users Say Thank You to mr220v For This Useful Post:
BamZipPow (11-07-2013), bespurcell (05-05-2015), California98Civic (10-18-2013), Cd (10-16-2013), Daox (10-14-2013), elhigh (10-16-2013), Flakbadger (10-15-2013), Frank Lee (11-07-2013), jeff88 (10-14-2013), jim-frank (11-11-2013), justme1969 (10-15-2013), kurzer (11-07-2013), mechman600 (10-15-2013), MetroMPG (10-15-2013), pgfpro (10-18-2013), Ryland (10-14-2013), Tofuball (08-25-2021)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-14-2013, 05:00 PM   #2 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
Very cool, cant wait to hear more!
__________________
Current project: A better alternator delete
  Reply With Quote
Old 10-14-2013, 05:24 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Atlanta
Posts: 30
Thanks: 0
Thanked 24 Times in 6 Posts
where it sits right now. I'm currently tuning it with a microsquirt. Running it on the 1nzfe ecu, it was pretty clear that high setting wanted to be richer, and the low setting wanted to be leaner. A stock ecu to run this would be nice....but simply doesn't exist.

In addition to having fuel economy benefits, I'm looking at cheap performance ideas for this motor. Say something that would get it to 4age 20v levels. Basically finding uses for $200 Prius engines.
  Reply With Quote
Old 10-14-2013, 08:13 PM   #4 (permalink)
Lots of Questions
 
Join Date: Jan 2013
Location: San Jose
Posts: 665

Motor-Rolla - '01 Toyota Corolla LE
Team Toyota
90 day: 28.3 mpg (US)

Gaia - '99 Toyota 4Runner SR5 Highlander
90 day: 19.78 mpg (US)

Gaia - Round 2 - '99 Toyota 4runner SR5 Highlander
90 day: 17.23 mpg (US)
Thanks: 343
Thanked 101 Times in 79 Posts
A few questions:

Just to clarify, is this the 1nz-fe or 1nz-fxe?

Quote:
Originally Posted by mr220v View Post
Well, it has an atkins cycle mode depending on what position the vvti cam is in. I currently have it set for on/off. This gives me two settings. 13:1 compression using the full 1.5L and 6:1 at 750cc's.

Toggling modes manually, I was able to get 37mpg where the various 4age's I've had would get 30, and the beams 3sge would get sub 30. This is running an echo ecu and no o2. Really a tune just good enough to run and drive.
So the vvt-i isn't automatic? On my Corolla, I don't do anything with it, it just does it's thing. Is this because your ECU doesn't have the software to control it?
What do you mean by full and half for the compression? Are you talking about half throttle? Also, why would the compression be half at 750CCs?
How do you get away with no O2 sensor, in terms of the engine running properly? I don't think I could do that here in CA, regardless.
Does this engine have belt driven accessories or electric? It looks like from your pic there are pulleys, but I just wanted to confirm.

Quote:
Originally Posted by mr220v View Post
I'm currently tuning it with a microsquirt. Running it on the 1nzfe ecu, it was pretty clear that high setting wanted to be richer, and the low setting wanted to be leaner. A stock ecu to run this would be nice....but simply doesn't exist.

In addition to having fuel economy benefits, I'm looking at cheap performance ideas for this motor. Say something that would get it to 4age 20v levels. Basically finding uses for $200 Prius engines.
What was wrong with the rich and lean settings? Did FE decrease with the stock ECU?

Was the 1nz engine really only $200?!

Also, TURBO!!!!! Just kidding, but seriously if you want performance, then that would be an option.
__________________
Don't forget to like our Facebook page!




Best EM Quotes:
Quote:
Originally Posted by aerohead View Post
It has been said, that if you peel the duct tape back on Earth's equator, you'll find that the two hemispheres are held together with J B Weld.
Quote:
Originally Posted by Dan9 View Post
subscribed with a soda.
Quote:
Originally Posted by aerohead View Post
If you're burning,and someone throws gasoline on you,there will be a localized cooling effect, but you're still on fire.
  Reply With Quote
Old 10-14-2013, 09:29 PM   #5 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Atlanta
Posts: 30
Thanks: 0
Thanked 24 Times in 6 Posts
A bit on Atkins Cycle. Atkins cycle is where you delay the closing of the intake valve part of the way up the intake stroke. With vvti, I have the choice to use the entire stroke, or delay the closing of the intake cam until halfway up the intake stroke. This gives me two displacements and two compression ratios. Closing at the bottom, it's 1.5L and 13:1. Closing midway up it's 750cc's and 6:1. With a better ecu I could use some of the intermediate settings, say 1.3L and 8:1 or so, but for now I'm using a cheaper ecu.

Normal vvti is more to optimize cam overlap/duration. Less overlap at lower rpms and more at higher rpms. This is something that works with engine speed whereas what I need with the 1nzfxe is more based on throttle position. The idea with the 1nzfxe is to bring on the 1.5L 13:1 setting at above say 70% throttle and cruise with the 750cc setting.

With the lower comp settings, I could do FI. That's called a miller cycle engine, which is found in late 90's mazda millenias.

Yes, $200. Good condition. The reason is because Prius's don't end up in the junkyard because of their gas engines usually, and once there, the engines aren't used in anything else.

1nzfe's and 2nzfe's are a good choice for somebody not wanting to experiment like me. I'd say SZ engines would be good too, but those don't get imported into the US.
  Reply With Quote
The Following 2 Users Say Thank You to mr220v For This Useful Post:
California98Civic (10-18-2013), christofoo (11-21-2013)
Old 10-14-2013, 09:58 PM   #6 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2010
Location: ATL (stuck in traffic)
Posts: 104

Bertha - '16 Mercedes Benz Metris
Thanks: 23
Thanked 11 Times in 6 Posts
Badass! I envy you!
__________________
RETIRED
  Reply With Quote
Old 10-14-2013, 10:14 PM   #7 (permalink)
Lots of Questions
 
Join Date: Jan 2013
Location: San Jose
Posts: 665

Motor-Rolla - '01 Toyota Corolla LE
Team Toyota
90 day: 28.3 mpg (US)

Gaia - '99 Toyota 4Runner SR5 Highlander
90 day: 19.78 mpg (US)

Gaia - Round 2 - '99 Toyota 4runner SR5 Highlander
90 day: 17.23 mpg (US)
Thanks: 343
Thanked 101 Times in 79 Posts
I see what you're saying now, it just took me a second explanation to understand. You are choosing when you want the intake to be closed, which determines the compression and the effective size of the engine (or at least effective displacement). Do you have a button inside the car to tell the system what you want or is it still automated?

So, since it is from a Prius, that means you have the FXE? How do you get around the hybrid battery stuff? Is that why you need a different ECU?

I've gotta find me a place that sells these! For $200, experimentation is very possible!
__________________
Don't forget to like our Facebook page!




Best EM Quotes:
Quote:
Originally Posted by aerohead View Post
It has been said, that if you peel the duct tape back on Earth's equator, you'll find that the two hemispheres are held together with J B Weld.
Quote:
Originally Posted by Dan9 View Post
subscribed with a soda.
Quote:
Originally Posted by aerohead View Post
If you're burning,and someone throws gasoline on you,there will be a localized cooling effect, but you're still on fire.
  Reply With Quote
Old 10-15-2013, 09:39 AM   #8 (permalink)
fuel conserver
 
Join Date: Oct 2013
Location: Buffalo, NY
Posts: 76

Civic - '99 Honda Civic EX
Thanks: 48
Thanked 15 Times in 13 Posts
Cool and resourceful
__________________
'02 E-350 7.3 Diesel (Work Van)
'91.5 Cummins 4x4 (Old Blue)
'00 Jetta TDI 5spd
'22 Tundra TRD OR
'04 RX330
'05 Tacoma 4x4
  Reply With Quote
Old 10-15-2013, 10:27 AM   #9 (permalink)
EcoModding Lurker
 
Join Date: May 2011
Location: Atlanta
Posts: 30
Thanks: 0
Thanked 24 Times in 6 Posts
While running it on the echo ecu it's on a button. My aftermarket ecu can control engaging based on throttle position.

Car-part.com has lots of listings for these. Total throwaway engines.

One thing to keep in mind though is that you do need some 1nzfe parts to make this work, which raises the cost of doing this, but overall it's still cheap.
  Reply With Quote
Old 10-15-2013, 10:41 AM   #10 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
Creative modding! Adding this to the home page.

What year is the MR2?

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  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