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Underbody braces, turbos and more!

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 Post subject: Re: MPG with no mods?
PostPosted: Wed Apr 07, 2010 6:13 pm 
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Joined: Wed Mar 23, 2005 6:36 pm
Posts: 64
Location: Riverside, CA
Yeah, I really need to start riding my bike to work again. I've actually been driving a lot the last few months in an effort to pin point what's up with my Geo. I checked the TBI heater hoses and they're hot. I think I'm running Bosch Platinum right now. I really don't know much about spark plugs. When I pulled my last set last summer they were black, which is when I started on the engine work.

I don't know whether I can find non-E10 in SoCal, but I'll look around and if I find it try the next tank. I'll report back my results.

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'93 Geo Metro


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 Post subject: Re: MPG with no mods?
PostPosted: Thu Apr 08, 2010 1:09 pm 
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Joined: Sun Apr 27, 2008 10:28 am
Posts: 290
Location: McCall, Idaho (Native: So Cal)
bkgeig wrote:
I think I'm running Bosch Platinum right now. I really don't know much about spark plugs. When I pulled my last set last summer they were black, which is when I started on the engine work.
I'll report back my results.


FYI everyone, you might try http://www.sparkplugs.com/default.asp and more specifically for the 411 on plugs: http://www.sparkplugs.com/sparkplug411.asp.

Yes, keep us posted. :wink:

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Have fun,
Bad Bent
'91 Metro, rescued from trip to junk yard. SuzukiRD Underpulley & Header. 3Tech 9mm plug wires & 218/350 cam +10 gear, Bosch Plat. +4s, FlameThrowerII, synthetic fluids. K&N, Optima, Catco, Jones glasspack, & KYB struts. Vortekx Generators, Air dam, 7mm ground system, Ram Air. No TBI bridge. No A/C - roof scoop works.
'96 Metro - The Wife's car: SuzukiRD Underpulley, 3Tech econo cam +10 gear, K&N, KYB, Bosch, Syn. & grounded. No TBI bridge.


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 Post subject: Re: MPG with no mods?
PostPosted: Fri Apr 09, 2010 12:06 pm 
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Joined: Wed Jul 08, 2009 11:31 pm
Posts: 26
Location: Vallejo, CA
Just ran my 49 state 1991 (no egr) 1.0 5 speed up 101 at 60-70, around Fort Bragg and environs, windy roads with many downshifts... 597 miles on 13.6 gallons for 43.9 overall.

The only attention to mileage was to remove my foot entirely from the throttle when slowing, and engage the highest gear that will still pull the hill.

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bob Woolery
Vallejo, CA
91 two door CA
91 four door Fed
92 two door Xfi Fed


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 Post subject: Re: MPG with no mods?
PostPosted: Sat Apr 24, 2010 7:06 pm 
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Joined: Thu May 15, 2008 6:41 pm
Posts: 44
Location: Santa Barbara, California
I took my stock 86 Sprint Plus up to Canada and back at around 55-60 mph. Over around 1850 miles, I averaged 48.8 mpg.

I put on 155/60/15's and paid more attention to my driving (usually) and since then
Worst: 37.8 (Hauling back and forth to the vets during an emergency)
Best: 65.5 (Drafting a UHaul going 70 with a tailwind)

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85 Chevy Sprint Plus
87 Chevy Sprint Plus
It may only have 3 cylinders and be less than 1 liter.....
BUT IT'S GOT A HEMI!!
XD


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 Post subject: Re: MPG with no mods?
PostPosted: Sun Apr 25, 2010 10:31 am 
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Joined: Sun Apr 27, 2008 10:28 am
Posts: 290
Location: McCall, Idaho (Native: So Cal)
Well, even with the pluses and minuses of mods...The Friday drive was Hwy 55 McCall-Boise, Idaho, 100 mi, drop 2,600 feet, eat a Whopper drive back up the canyon. Sunday drive McCall-Grangeville, 100 miles with drop to 1,545 elevation then the grade climbs 2700 vertical feet (823 m) in 7 miles (11 km), an average gradient of over 7%. I did 3rd gear at 65 mph (6,000 rpm) for 2 miles. Round trip net elevation change 0, total miles 500. Gas mileage for last weekend 54.29! :D

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Have fun,
Bad Bent
'91 Metro, rescued from trip to junk yard. SuzukiRD Underpulley & Header. 3Tech 9mm plug wires & 218/350 cam +10 gear, Bosch Plat. +4s, FlameThrowerII, synthetic fluids. K&N, Optima, Catco, Jones glasspack, & KYB struts. Vortekx Generators, Air dam, 7mm ground system, Ram Air. No TBI bridge. No A/C - roof scoop works.
'96 Metro - The Wife's car: SuzukiRD Underpulley, 3Tech econo cam +10 gear, K&N, KYB, Bosch, Syn. & grounded. No TBI bridge.


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 Post subject: Re: MPG with no mods?
PostPosted: Thu May 06, 2010 10:25 am 
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Joined: Thu May 06, 2010 10:18 am
Posts: 1
Location: United States
those are good mileage..

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 Post subject: Re: MPG with no mods?
PostPosted: Thu May 06, 2010 11:19 am 
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Joined: Thu Sep 24, 2009 10:18 pm
Posts: 110
Location: Levittown PA USA
My latest tank on E0 scored me 54.82 mpg and this was a VERY MUCH NOT ideal tank. I am doing Census work which has me 100% in cold burn mode since I never have to drive more than 1 mile at a time before stopping and turning off. usually around .5 miles each leg.

So I end up in cold burn the whole day. but I did have a 180mile trip to moyerstown and a 110 mile trip to EHC to balance things out.

Nice. I can't wait till I get a NORMAL tank without stop and go driving I think I will easily kill the cars stock 58mpg highway and on long trips I think I can break 60mpg.

I have enough fuel for 2 more tanks of E0 maybe 3 if I fill up at 400 miles instead of 500 miles. Then its back to E10 for a few tanks to log the data points.


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 Post subject: Re: MPG with no mods?
PostPosted: Fri May 07, 2010 1:54 am 
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Joined: Sun Apr 27, 2008 10:28 am
Posts: 290
Location: McCall, Idaho (Native: So Cal)
aaronthompson08 wrote:
those are good mileage..

welcome to the forum, aaronthompson08!

Yea, and I backed it up with Winnemucca-Reno-Winnemucca and got 55.9 at 60-65 mph.

I think you're going to get your 60 mpg, nerys! I certainly hope so. :)

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Have fun,
Bad Bent
'91 Metro, rescued from trip to junk yard. SuzukiRD Underpulley & Header. 3Tech 9mm plug wires & 218/350 cam +10 gear, Bosch Plat. +4s, FlameThrowerII, synthetic fluids. K&N, Optima, Catco, Jones glasspack, & KYB struts. Vortekx Generators, Air dam, 7mm ground system, Ram Air. No TBI bridge. No A/C - roof scoop works.
'96 Metro - The Wife's car: SuzukiRD Underpulley, 3Tech econo cam +10 gear, K&N, KYB, Bosch, Syn. & grounded. No TBI bridge.


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 Post subject: Re: MPG with no mods?
PostPosted: Wed Sep 22, 2010 3:45 pm 
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Joined: Mon Dec 07, 2009 6:27 pm
Posts: 54
Location: Springfield, Oregon
Still getting average 44 - 47 mpg. This 1990 Geo Metro XfI has either 178k or 278k miles on it (I am leaning towards the latter). I DO plan to rebuild the engine when it really gets noisy. The 1995 Escort only gets 34mpg so it would pay for the rebuild in gas savings after a year.

My commute is 62.5 miles each way. Upgraded to 13inch rims with Toyo "Eclipse" tires. Once I get the brake shudder problems fixed, will post new mileage reports. Oh, and when I have time, will have to figure out what I screwed up in my Tungsten mileage program. Told me I got 55 mpg once, and 38 another time. Not likely.

But this car is really butt-ugly. Anyone know where to get good quality seatcovers? Please only if you have bought them yourself. I can surf the net too.

OregonJim

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2014 Prius "C" Model 2
1990 Geo Metro Xfi (for sale)
1997 Buick LeSabre
1994 Chevy Z71 pickup (250k miles) (also for sale)


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 Post subject: Re: MPG with no mods?
PostPosted: Sun Sep 26, 2010 11:41 am 
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Joined: Mon Dec 07, 2009 7:18 pm
Posts: 340
Location: Victoria BC
Could the o2 sensor compensate for this?
BadBent wrote:
wheelspin1 wrote:
Pretty consistent 39-42 mpg. In the dead last years 22 below zero MN winter it got down to 36mpg for a couple weeks there.

Interesting. According to http://www.denysschen.com/catalogue/density.asp for every 10 Deg. F drop in temp air density increases approx. 2%. Not factoring in winter fuel, warm-up, tire pressures, increased roll resistance, yeda, yada. Rough calculations that would be an 20% increase in air density from +78 to -22 and a loss of say 5 mpg (41-36), eh. Or maybe 1 mpg for every 4% increase.
So when the temp drops 20 Deg. F the mpg may drop 1 mpg.
Of course my tolerance to cold goes down exponentially.

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SCIENCE IS A WAY OF THINKING...Carl Sagan


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 Post subject: Re: MPG with no mods?
PostPosted: Sun Sep 26, 2010 11:54 am 
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Joined: Mon Dec 07, 2009 7:18 pm
Posts: 340
Location: Victoria BC
I have two g10 geo autos. I get 45 in one and 30 in the other, no codes.
Like looking while blind for the problem.
Fuel inrichment in cold weather sure makes it worse. I may remove my cold air intake this year.
Adding a warm air intake sounds like an idea, not a hard mod either I would bet.

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SCIENCE IS A WAY OF THINKING...Carl Sagan


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 Post subject: Re: MPG with no mods?
PostPosted: Sun Sep 26, 2010 1:54 pm 
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Joined: Sun Apr 27, 2008 10:28 am
Posts: 290
Location: McCall, Idaho (Native: So Cal)
Quote:
Could the o2 sensor compensate for this?
Apparently it does not. :( I think it's mostly there to detect particulates in the exhaust, protect the environment, the catalytic converter and along with everything else the ECM senses, gives the ECM grounds to change things.

The CAI... is it a cone filter in the engine bay? It's still pulling in some warm engine bay air. You might try an OEM filter and remove the cone/snorkel for the winter?

On your 30 mpg G10 check the coolant lines on the Throttle Body (TB), above the alternator. They should be as hot as the radiator hoses at operating temp.
Image

Check your TPS setting and throttle cable tension. Might try a new O2 sensor for a few tanks, you can always put the OEM back in if you want. Check for vacuum leaks and clean all your ground wires, especially the ones on the TB and the MAP sensor. I use a Dremel tool with it's small wire brush. I added ground wires I got off eBay. http://motors.shop.ebay.com/i.html?_trkparms=65%253A12%257C39%253A1%257C72%253A4066&rt=nc&_nkw=ground+wire+kit&_dmpt=Motors_Car_Truck_Parts_Accessories&_sticky=1&_trksid=p4506.c0.m245&_sop=15&_sc=1

Do you Seafoam? Have you done a compression check? 150 psi (warm engine, plugs out, Wide Open Throttle) is minimum before tearing something apart.

On topic? These are all things I do to maintain a cars FE, mpg and longevity with no mods.

_________________
Have fun,
Bad Bent
'91 Metro, rescued from trip to junk yard. SuzukiRD Underpulley & Header. 3Tech 9mm plug wires & 218/350 cam +10 gear, Bosch Plat. +4s, FlameThrowerII, synthetic fluids. K&N, Optima, Catco, Jones glasspack, & KYB struts. Vortekx Generators, Air dam, 7mm ground system, Ram Air. No TBI bridge. No A/C - roof scoop works.
'96 Metro - The Wife's car: SuzukiRD Underpulley, 3Tech econo cam +10 gear, K&N, KYB, Bosch, Syn. & grounded. No TBI bridge.


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 Post subject: Re: MPG with no mods?
PostPosted: Mon Sep 27, 2010 12:05 pm 
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Joined: Mon Dec 07, 2009 7:18 pm
Posts: 340
Location: Victoria BC
Thanks, will doo

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SCIENCE IS A WAY OF THINKING...Carl Sagan


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 Post subject: Re: MPG with no mods?
PostPosted: Thu Dec 16, 2010 9:55 am 
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Joined: Wed Mar 23, 2005 7:35 pm
Posts: 172
Location: Dalton, GA.
'91 Metro LSi Convertible - no mods except maintenance.
42 MPG high - 39 MPG average.

'94 Hatch (retired) (K&N Air filter routed for hot air)
46 MPG high - 42 MPG average


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 Post subject: Re: MPG with no mods?
PostPosted: Tue Mar 01, 2011 9:39 am 
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Joined: Wed Feb 09, 2011 1:46 am
Posts: 19
Location: Riverside, CA
86 Chevy Sprint Base Model

Driving badly:

Worst: 30mpg Rush hour traffic with a lead foot

Best: 40mpg @75 mph Freeway

Driving nice:

Worst: 37mpg @70mph

Best: 47mpg @55-60mph


These are all full tank numbers, not single trip numbers.


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 Post subject: Re: MPG with no mods?
PostPosted: Mon Apr 25, 2011 10:28 pm 
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Joined: Sun Mar 28, 2010 1:11 pm
Posts: 1
Location: Northern Idaho
'91 Convertible, Kyb shocks, 185/65R14 tires, 5w30 synthetic oil + Synchromesh, timing advanced to slight pinging and then retarded a bit, use cruise control wherever possible, 43 to 44 mpg is typical. Don't drive in the snow :evil: or mud :evil: . Engine is about to be rebuilt...


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