Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-15-2008, 03:47 PM   #1 (permalink)
EcoModder
 
SirKeats's Avatar
 
Join Date: May 2008
Location: Southern Oregon
Posts: 111

GeRide - '89 Geo Metro *XFi
90 day: 54.26 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Geo Metro Conversion - Standard to XFI

Is it possible to convert a standard geo metro to an XFI metro? What would be involved?

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-15-2008, 06:24 PM   #2 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,447

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 122 Times in 90 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
It definitely is, but I'm not the expert! I know you'll at least need the xfi cam (or a regrind of yours, which I hear is now only like 50 bucks) and the transmission and ecu, but that's all my honda brain can help.

Welcome to ecomodder!
  Reply With Quote
Old 05-15-2008, 06:32 PM   #3 (permalink)
EcoModder
 
SirKeats's Avatar
 
Join Date: May 2008
Location: Southern Oregon
Posts: 111

GeRide - '89 Geo Metro *XFi
90 day: 54.26 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
thanks!

if the regrind is 50 bucks... that's awesome. not sure how easy it would be to come by a tranny, though i've just been told by someone who rebuilds the things that simply sticking 13inch wheels and tires on can achieve similar results.

that leaves the ecu. are those easy to come by? aftermarket?
__________________
  Reply With Quote
Old 05-15-2008, 06:33 PM   #4 (permalink)
Dartmouth 2010
 
SVOboy's Avatar
 
Join Date: Nov 2007
Location: Hanover, NH
Posts: 6,447

Vegan Powa! - '91 Honda CRX DX
Team Honda
90 day: 66.52 mpg (US)
Thanks: 92
Thanked 122 Times in 90 Posts
Send a message via AIM to SVOboy Send a message via MSN to SVOboy Send a message via Yahoo to SVOboy
I'm sure you can get the ecu out of a junkyard, so it's prolly as easy to come by as any other XFi parts. *shrug* I know people have found these things, so I wouldn't call it impossible, but I don't honestly know.
  Reply With Quote
Old 05-15-2008, 09:06 PM   #5 (permalink)
nut
 
Coyote X's Avatar
 
Join Date: Dec 2007
Location: Southen West Virginia
Posts: 654

Metro XFi - '93 Geo Metro XFi Convertible
90 day: 62.17 mpg (US)

DR650SE - '07 Suzuki DR650SE
90 day: 55.26 mpg (US)
Thanks: 0
Thanked 37 Times in 26 Posts
Send a message via MSN to Coyote X
transmission and cam are the two big items to get better mileage.

The others are smaller gains and probably can be made up for with other mods that are easier. The computers are almost identical and there is almost no gain to be had from swapping them. It really is not worth crawling under the dash to swap them even if you had one. The other difference is the xfi has 1 compression ring instead of two so the only way to duplicate that is to tear the engine down and rebuild it but use only the top compression ring. That is a huge amount of work for maybe 1mpg

Best bet is to get the xfi cam either at a junkyard or send in a stock one to get reground. Set the cam advance to whatever matches your driving style, usually a few degrees advanced by drilling a new indexing hole in the sprocket. And finding a better geared transmission. Here are the available ratios and what they came out of:

Quote:
The available transmission ratios and what they are out of:

* 3.52:1 1.3L SOHC Swift up to mid year ‘95
* 3.79:1 98-01 4 cylinder Metro
* 3.85:1 XFi Metro
* 3.95:1 mid year ‘95 up 1.3L SOHC Swift
* 4.10:1 Swift GT, GTi, 95 and earlier Metro
* 4.39:1 Metro Convertible, 96+ Metro
Find a 3.85 or better and go with 13 inch or 14 inch tires and you will drop the rpms by about 600 at 60mph.

So with the xfi cam and 3.52 gears and taller tires you should be able to beat the xfi mileage.
__________________


  Reply With Quote
The Following User Says Thank You to Coyote X For This Useful Post:
blowncopcar (05-29-2013)
Old 05-15-2008, 10:46 PM   #6 (permalink)
Hi-Tech Redneck
 
Johnny Mullet's Avatar
 
Join Date: May 2008
Location: Ashtabula, Ohio
Posts: 1,436
Thanks: 6
Thanked 49 Times in 42 Posts
Send a message via AIM to Johnny Mullet Send a message via MSN to Johnny Mullet
Quote:
Originally Posted by Coyote X View Post

Set the cam advance to whatever matches your driving style, usually a few degrees advanced by drilling a new indexing hole in the sprocket.
So can you take a "Stock" non XFI metro 1.0L camshaft sprocket and drill another hole at say 185 degrees (in the clockwise direction) and install the sprocket with the new location and get better fuel economy? Or does the cam have be reground also?


Would this work without resetting ignition timing because you changed cam timing?
__________________

GeoMetroforum.com - got mpg?
  Reply With Quote
Old 05-15-2008, 11:51 PM   #7 (permalink)
nut
 
Coyote X's Avatar
 
Join Date: Dec 2007
Location: Southen West Virginia
Posts: 654

Metro XFi - '93 Geo Metro XFi Convertible
90 day: 62.17 mpg (US)

DR650SE - '07 Suzuki DR650SE
90 day: 55.26 mpg (US)
Thanks: 0
Thanked 37 Times in 26 Posts
Send a message via MSN to Coyote X
I drilled an extra 3 holes in my sprocket so I could vary the timing a few ways to experiment. The way I did it was to set the ignition timing at 0 with the cam in the stock position then change to one of the other holes and check the timing till I found a combination of holes and belt tooth positions that gave me the advance range I wanted. After that I set the ignition to whatever I was using at the time.

The distributor will always move the same amount advanced or retarded as the cam so if you start with the ignition at 0 then it is easy to see what the cam is doing. You will have to reset the timing when you are done anyway so use it to make sure the cam is where you want it. The xfi has the same cam sprockets as the other metros so there is no need to worry about what one is best.

The best mileage I found was with the xfi cam advanced 4-5 degrees and everyone on teamswift says a standard cam is best at 10 degrees advanced. So 10 degrees is about half a tooth distance, one tooth off on the belt and you are 18 degrees off, so you can pretty much eyeball where the hole needs to be for 10 adv. But if you don't want to try it they are sold on teamswift for like 25 bucks already drilled at 10 degrees.
__________________


  Reply With Quote
Old 05-16-2008, 02:34 AM   #8 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,903

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 434 Times in 354 Posts
I just did a quick search on car-part.com and the most expensive xfi tranny I found was 47 miles away from me at $600 but there were 6 others within 100 miles ranging from $90-$125
  Reply With Quote
Old 06-27-2008, 12:36 PM   #9 (permalink)
New User...Educate ME!
 
Join Date: Jun 2008
Location: Minnesota
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Does anyone know where I can find an XFI cam or who regrinds them?
PM me if possible thanks. Ive been looking through posts all morning so it'll be hard to remember which one I posted to.
  Reply With Quote
Old 06-27-2008, 02:19 PM   #10 (permalink)
Master EcoModder
 
Join Date: May 2008
Location: Briggsdale, Colorado
Posts: 296

Wildfire - '96 Ford Bronco XL
90 day: 14.88 mpg (US)

Blackford - '96 Ford Bronco XLT
90 day: 20.26 mpg (US)

Y2k - '00 Honda Insight
Gen-1 Insights
Team Honda
90 day: 73.98 mpg (US)

Redford V10 - '01 Ford F250 Lariat
90 day: 15.64 mpg (US)

FireFly - '00 Honda Insight DX
90 day: 69.43 mpg (US)

LittleRed - '00 Honda Insight
Thanks: 3
Thanked 31 Times in 14 Posts
You need to lighten the car by about 150 lbs also to simulate an XFI. Changing the rings isn't THAT hard. Remove the head, remove the oil pan, pop the piston out the top and remove a ring, pop the piston it back in, reassemble. but but but, really not worth the effort IMHO. Just get an economy cam (or XFI cam) from Mike Covington at 3tech and and advanced timing sprocket (8*) and that would be pretty close. Talk to him and see what he can set up for you.

I have an economy cam and 8* sprocket in a box waiting to go in when I get the gumption to wrestle with it. I had a hard time takling off the old-style crank gear, so I just left it and used all the old stuff from the JDM. One day I'll convert to the newer square sprockets.

__________________
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
MPG Gauge for the Geo Metro XFi Wayneburg General Efficiency Discussion 2 03-10-2011 07:48 PM
Geo Metro XFI Convertible Project Finished Coyote X EcoModding Central 227 11-14-2009 11:31 PM
Geo Metro Parts for sale bennelson For Sale 2 06-11-2009 12:00 AM
CL: Mechanics Special 94 Geo Metro Red For Sale 4 04-09-2008 02:48 PM
Video: Geo Metro Commercial! Peakster General Efficiency Discussion 5 12-13-2007 10:54 PM



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