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Underbody braces, turbos and more!

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PostPosted: Wed Jan 13, 2010 10:22 am 
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Location: New York State
I found a Geo Metro engine on craigslist. I found out it was from a '91 XFI and I went to get it. I got the engine, transmission, axles, radiator, ECU, fuel tank and a bunch of various little parts. All for $100!!! I have yet to verify if it really is an XFI, but I'm happy either way for the price.

It's supposed to be a good running engine, but I haven't heard it run. I was going to rebuild my late '94 engine, but now I'm not sure. I could rebuild the XFI engine or rebuild the non-XFI engine and just stick the XFI cam in it. Anybody know if the XFI piston rings are the same as the normal engine's top rings? Or is it a special design? They are the same size in the service manual.

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1994 Metro - MPH project (getting a DOHC G13B)
1994 Metro - MPG project (getting an XFi G10)
1992 Swift - Parts car (gone)
1991 Swift - Parts car (gone)
1990 Swift - Parts car
1997 Metro - Parts car (gone)
1993 Metro - Parts car
1989 Swift GTi - Parts car
1998 Metro - Parts car


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PostPosted: Thu Jan 14, 2010 7:28 am 
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Location: Washington, DC
Same rings, just leave one off.

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91 Pontiac Firefly Turbo
10 Suzuki Kizashi


Alcohol, Tobacco, and Firearms
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PostPosted: Thu Jan 14, 2010 9:00 am 
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Location: SEATTLE,WA
WRONG on the rings. The rings on a Xfi motor are very, very expensive "no-gap" rings, just ask any Nascar engine builder. Between the rings, cam and transmission these are the main parts to a Xfi being so fuel efficent. The ECU, high temp thermostat, missing RH mirror, all help in making the Xfi so fuel efficent.


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PostPosted: Fri Jan 15, 2010 12:22 am 
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Turns out it's a '92 XFI, not a '91. I haven't pulled the head yet, but it's definitely an XFI camshaft. Are the XFI rings still available?

_________________
1994 Metro - MPH project (getting a DOHC G13B)
1994 Metro - MPG project (getting an XFi G10)
1992 Swift - Parts car (gone)
1991 Swift - Parts car (gone)
1990 Swift - Parts car
1997 Metro - Parts car (gone)
1993 Metro - Parts car
1989 Swift GTi - Parts car
1998 Metro - Parts car


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PostPosted: Sun Jan 17, 2010 8:07 am 
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My 89 had a regular, no different from any other I've seen, ring on it. Bought new from the dealer, rebuilt four years later at 160K miles.

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91 Pontiac Firefly Turbo
10 Suzuki Kizashi


Alcohol, Tobacco, and Firearms
Should be the name of a convenience store, not a government agency


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PostPosted: Wed Jan 20, 2010 1:16 am 
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Location: New York State
I haven't seen what rings are in this engine yet, but I found this in the service manual.
http://i48.tinypic.com/2v8sh3s.jpg

_________________
1994 Metro - MPH project (getting a DOHC G13B)
1994 Metro - MPG project (getting an XFi G10)
1992 Swift - Parts car (gone)
1991 Swift - Parts car (gone)
1990 Swift - Parts car
1997 Metro - Parts car (gone)
1993 Metro - Parts car
1989 Swift GTi - Parts car
1998 Metro - Parts car


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PostPosted: Wed Jan 27, 2010 6:55 am 
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Joined: Mon Apr 14, 2003 11:31 pm
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Location: New York State
XFI piston:
Image

XFI piston ring:
Image
Image
It might be hard to tell from the pic, but the staggered gap is also angled. I haven't checked if the gap is within spec yet. If it is, I might reuse them with new oil rings. Is that a bad idea?

And another craigslist score, engine stand for $10! :D

_________________
1994 Metro - MPH project (getting a DOHC G13B)
1994 Metro - MPG project (getting an XFi G10)
1992 Swift - Parts car (gone)
1991 Swift - Parts car (gone)
1990 Swift - Parts car
1997 Metro - Parts car (gone)
1993 Metro - Parts car
1989 Swift GTi - Parts car
1998 Metro - Parts car


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PostPosted: Wed Jan 27, 2010 7:25 am 
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Joined: Thu Apr 17, 2008 2:22 am
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Location: Zagreb, Croatia
Gasoline Fumes wrote:

A little offtopic regarding this pic... :oops:

Why do you need to measure ring gap 120mm in depth of the cylinder? :ez_roll:

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PostPosted: Sun Jan 31, 2010 10:05 am 
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Location: New York State
sixthy wrote:
Gasoline Fumes wrote:

A little offtopic regarding this pic... :oops:

Why do you need to measure ring gap 120mm in depth of the cylinder? :ez_roll:

I don't know, that's just for the XFi engine. The standard engine is measured right at the top of the cylinder. :huh:

_________________
1994 Metro - MPH project (getting a DOHC G13B)
1994 Metro - MPG project (getting an XFi G10)
1992 Swift - Parts car (gone)
1991 Swift - Parts car (gone)
1990 Swift - Parts car
1997 Metro - Parts car (gone)
1993 Metro - Parts car
1989 Swift GTi - Parts car
1998 Metro - Parts car


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PostPosted: Sun Jan 31, 2010 10:50 pm 
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Joined: Tue Aug 04, 2009 9:27 pm
Posts: 824
Location: walsh,alberta,canada
....always measured my ring(s)gap half-way down the hole....

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89 1.0 turbo firefly
2"exhaust,no cats/resonator
3 tech 6*gear
3 tech turbo grind cam
3 tech cylinder head/w/port,polish,blend,oversized s/s valves
gti brake swap
89 white gti twincam....need I say more?
92 metro aka ''blue lump of coal''
92 white metro lsi vert
91 blue chevy sprint (gas sipper)


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