Edmunds tests my LeMons Miata - Miata Turbo Forum - Boost cars, acquire cats.

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Old 05-20-2009, 12:52 PM   #1
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Default Edmunds tests my LeMons Miata

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Old 05-20-2009, 01:10 PM   #2
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WOW. Thats friggin awesome.

Why only 3.5lbs of boost?
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Old 05-20-2009, 01:23 PM   #3
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Congrats, man! That's a fantastic piece, and a really fun looking build.
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Old 05-20-2009, 01:45 PM   #4
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nice. do you and the SCC guys all work for edmunds now?
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Old 05-20-2009, 01:56 PM   #5
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Where's the radiator?

My favorite part:
"Slithering through the slalom at 70.4 mph makes the Miata faster than a 2009 Porsche Carrera S Cabriolet. Road-holding, on heat-cycled, flat-spotted rubber, was better than other $500 cars we've driven, at 0.89g. Braking, at 135 feet from 60, is 14 feet shorter than a 2009 Honda Pilot and that's without ABS and on those same crap tires."

I also recognized the Author's name: Josh Jacquot, cool.

Chris
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Old 05-20-2009, 02:03 PM   #6
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I've always wondered what polished daisies looked like...
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Old 05-20-2009, 02:40 PM   #7
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Awesome!
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Old 05-20-2009, 02:44 PM   #8
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i like the dual horns...


thing looks awesome through the slalmon.
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Old 05-20-2009, 06:02 PM   #9
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Congrats!

- L
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Old 05-20-2009, 11:05 PM   #10
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lmao.

badass.
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Old 05-21-2009, 02:19 PM   #11
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Quote:
Originally Posted by Saml01 View Post
Why only 3.5lbs of boost?
To keep fuel pressures down to a level where we can beat on the car for an entire race with inpunity without risking a hose rupture. We're running a Vortech FMU that a mt.net member sent me for free, or something close to it.

When we first ran the turbo, boost would creep to 7-8 psi by redline. Our fuel pressure would go off the charts, well beyond what the fuel supply hose is rated for.

Then I "tuned up" the wastegate port in the turbine housing using a die grinder. Now we have a rock-solid 3.5 psi boost all the way to redline and fuel pressures that we can live with for an entire endurance race.
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Old 05-21-2009, 02:48 PM   #12
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I think the engine would easily handle more 8psi in endurance. As for fuel, im guessing you guys are running on stock injectors?
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Old 05-21-2009, 02:56 PM   #13
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Stock 1.8 injectors with FMU + bipes. The engine might handle more, but the fuel hose won't. At least, not without some amount of risk.
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Old 05-21-2009, 03:43 PM   #14
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Isnt the fuel hose rated to 100psi?

If you guys are interested, I may be able to get you guys some injectors. However, only what comes on a FoMoCo vehicle. Interested?

Slight larger injectors may let you run under 100psi but have more fuel for the extra boost.
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Old 05-21-2009, 04:00 PM   #15
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Something like that. If I recall correctly, we're running close to 100psi fp now.

We'll probably leave it as-is. Low boost has its advantages--our cooling system can cope with the thermal loads, our EGTs are good and our fuel consumption decent.
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Old 05-22-2009, 02:51 AM   #16
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Woo-hoo! My vortech fpr is in an Edmunds article!

I love the brake rating: frustrating.
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Old 05-22-2009, 06:35 AM   #17
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I'll see you guys at Thunderhill in my 1400lb Daihatsu Charade on Jay-approved Konis and some $50 ebay coilover sleeves.

I love that car and its evolution towards a Caddy was a great choice!
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Old 05-22-2009, 06:45 AM   #18
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Quote:
Originally Posted by JKav View Post
thats awesome
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