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Old 03-20-2017, 05:05 PM   #91 (permalink)
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The AC radiator is almost as big as the engine radiator.

It's only half discoloured because that's where the cracks are -- dirty coolant has spilled down it several times.

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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



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Old 04-08-2017, 09:22 AM   #92 (permalink)
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About the smaller radiator being enough, remember folks, there's always the good old "heater on full blast-trick" if it tends to overheat. Especially in this case with the open top.
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Old 04-09-2017, 11:27 AM   #93 (permalink)
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Quote:
Originally Posted by kurzer View Post
the best mod i did to my mx5, was setting the mixture leaner. in open loop the car is so rich, even the power isn´t at its best. inner cooling, i guess.

i opend the black cover at the air flow meter. there is the spring base wich i set now 4 klicks leaner.
You'll be my hero if that works on mine! Dang thing runs way too rich. We'll find out soon!

PS: I put my Miata back on the road this morning. Stuck a new(er) battery in it and it fired right up after sitting for 2 years. That must have been some really good fuel stabilizer I put in there!!!!

Last edited by Stubby79; 04-09-2017 at 02:24 PM..
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Old 04-10-2017, 04:51 AM   #94 (permalink)
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make sure, the lambda sonde is ok first. a weak sonde tends to richer mixture in closed loop. the tune of the air flow meter is working for open loop.
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Old 04-13-2017, 08:02 PM   #95 (permalink)
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Swift radiator test = A-OK

I made up a bracket to mount the Swift radiator and installed it in the car.

I also put in the Suzuki fan & shroud (it fit!) and connected it to the Miata's wiring.

Popped the hoses on (with modifications to the upper hose, since it doesn't lead where it used to), and took it for a spin.

No leaks! And I confirmed the coolant fan goes on (and off) as expected when the hot engine is left idling. (That part of the test was painful. )

Now that I know everything fits & works, I'm going to take it apart again, tidy up some details and re-install it. I'll get some pics this weekend.

It's a Franken-mod, but it works. It reminded me a tiny bit of the way Cubans have keep their 1950's American cars running without access to proper replacement parts.
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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
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www.MetroMPG.com - fuel efficiency info for Geo Metro owners
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Old 04-17-2017, 01:47 PM   #96 (permalink)
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Last 3: 70.09 mpg (US)

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90 day: 52.71 mpg (US)

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

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rad pics

The original radiator was attached & supported with rubber-isolated side brackets, but the Swift radiator sat on a rubber-isolated bracket at the bottom.

Solution: remove the original side-brackets and join them with a bottom brace + cradle to support the smaller radiator:



I positioned the smaller rad so the original bottom coolant hose lined up. Flipping the top hose over and adding a short extension hose finished the job.



I just need to make an isolated bracket to secure the top tank.

Weight savings: 7 lbs (including coolant). First ecomod done!

---

This weekend I also:

1) Repaired a sloppy windshield wiper linkage, which was missing a bushing. (The previous owner had "secured" it with duct tape.)

2) Stitched the zipper back on the top of the rear plastic window. It was half off, so the window was flopping around in the breeze, letting in weather & critters.
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__________________
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
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Old 04-18-2017, 05:58 AM   #97 (permalink)
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You and I both need to clean our engines!
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Old 04-18-2017, 11:05 AM   #98 (permalink)
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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: 52.48 mpg (US)
Thanks: 4,060
Thanked 6,957 Times in 3,602 Posts
Yup! The old radiator barfed nasty old coolant all over the engine bay.
__________________
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
Old 04-18-2017, 12:00 PM   #99 (permalink)
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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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: 52.48 mpg (US)
Thanks: 4,060
Thanked 6,957 Times in 3,602 Posts
Swiss cheese floorboards

I knew before I bought this turd-vertible that the floor on the driver's side was ventilated. I wasn't sure about the passenger side. Yesterday I pulled the seats and carpets to see how bad it really is...

Driver's side



Above: of course, it's worse than it looked from underneath, but no big surprises.

It'll look much worse than this once I've ground back the rust to good metal!

Passenger side

I kept finding flecks of rust ON the carpet behind the passenger seat, and now I know why:



The seat cushion has been wet enough, frequently enough, that the steel stamping on the bottom started rusting away.

The floor itself is in much better shape than the driver's side, though:



The most alarming sight was around this kick panel (the ECU lives behind it). It's not as bad as it looks though: that's an aluminum stamping, and there's some good galvanic corrosion going on there:



In the floor itself there are a few small-ish holes:



I did pull the kick panel and the ECU, and behind there it's actually fine.

---

So I need to pencil in some quality time with my grinder & welder.
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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
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Old 04-18-2017, 02:42 PM   #100 (permalink)
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Maybe some hybrid (Belly Pan/New Floor Pan) material can be used!!!

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