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PostPosted: Wed Aug 09, 2006 5:38 pm 
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I'll bet you could get awy with 89, or 91 octane, unless you're running lots of intial timing.

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PostPosted: Wed Aug 09, 2006 7:15 pm 
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suprf1y wrote:
I'll bet you could get awy with 89, or 91 octane, unless you're running lots of intial timing.

do you recemmend running with the 91 and retarding the timing some?

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PostPosted: Wed Aug 09, 2006 8:39 pm 
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I would try the 89, then the 91, and see if you get any detonation as-is

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PostPosted: Tue Aug 15, 2006 12:33 pm 
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Any updates?


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PostPosted: Tue Aug 15, 2006 3:23 pm 
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rarson wrote:
Any updates?


read the previous posts, i just updated a week ago.

Any updates since then until now would be worthless.

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PostPosted: Wed Aug 16, 2006 10:17 pm 
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I figured maybe you had tried lower octane gas and thus could report whether knock increased or not.


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PostPosted: Thu Aug 17, 2006 4:12 pm 
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rarson wrote:
I figured maybe you had tried lower octane gas and thus could report whether knock increased or not.


give me a few months to get good repeatable data.

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Swift +10 Cam sproket & 10.5:1 Cyl head, port/polish, Economy Cam.


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PostPosted: Mon Aug 21, 2006 11:06 pm 
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Awesome, good to know that you're interested in good data, and not just spontaneous results.

BTW, thanks for the reports thus far.


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PostPosted: Mon Mar 24, 2008 9:48 am 
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Unfortunately, the great images of the tests Geo Hauler did after his upgrade have disappeared (see post #1).

I came back to this thread looking for information about how much the peak torque RPM may have shifted for an engine with the Economy/XFi cam.

It's obvious that there's more torque at lower RPM, but has the torque curve flattened? Or has the peak just shifted to a lower RPM? By how much?

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PostPosted: Mon Mar 24, 2008 10:57 am 
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I think I have them :cheers:
I'll look when I get home.

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PostPosted: Mon Mar 24, 2008 11:07 am 
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Ooo! That would be great. Thanks Mike.

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PostPosted: Wed Mar 26, 2008 11:09 am 
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This should cover it


Attachments:
Econo head pk1.doc [202.5 KIB]
Downloaded 792 times

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PostPosted: Fri Mar 28, 2008 2:01 pm 
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Great - thanks, Mike.

I don't suppose you also have a BSFC graph for the g10, do you?

Someone linked me to one, which I'll post later on.

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PostPosted: Sun Jul 13, 2008 1:19 am 
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hello, any ideas how the results of these performance improvements might change on the newer / heavier 96-2001 model geo/ chevy metro?


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PostPosted: Sun Jul 13, 2008 7:50 am 
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davioh: my car's a '98 Firefly. So any of my comments about the XFi/economy cam in this thread & elsewhere apply to the '95 and newer cars.

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PostPosted: Fri Aug 13, 2010 7:49 pm 
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Location: marysville, washington
Hey anybody know where i can get a new 3 cylinder engine for my geo metro? You see it was my first car i bought and some dirtbag screwed me over. I only got to drive it for a few days before i had to take it to Steves auto, and thats when he told me the bad news. I could really use the help. Thank you.
Kelsey


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PostPosted: Sat Aug 14, 2010 2:05 pm 
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kelsey wrote:
Hey anybody know where i can get a new 3 cylinder engine for my geo metro? You see it was my first car i bought and some dirtbag screwed me over. I only got to drive it for a few days before i had to take it to Steves auto, and thats when he told me the bad news. I could really use the help. Thank you.
Kelsey

I believe you can still get the long block new engines through GM or Suzuki but their not cheap.


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PostPosted: Sun Aug 15, 2010 9:12 am 
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i've had great luck using the jdm import used engines that you can find on the internet.

japan has strict air care policies and they routinely replace 30 - 40 thousand mile engines with factory new engines over there. they ship the low mileage, used engines over here. you remove the intake and exhaust components from your hosed engine and swap them to the jdm unit and pop it back into the car.

i'd advise you to replace the front and rear crank seals, the cam seal, the distributor o-ring, and the valve cover seal before loading the jdm engine into the car. the importers usually hit the engines with a pressure washer and the long sea voyage inside a hot shipping container doesn't do the seals any good.

the jdm low mileage used engines are roughly a third of the cost of a new crate engine and in line with a good rebuild on your old mill (but a heck of a lot less work.) labor at a shop would kill the economics of rebuilding your engine and that makes the jdm import engine swap an even better deal.

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