Best Fuel Economy

[dnobull]

Thought I would mention that at the 2017 Eureka Springs Corvette Weekend, I drove my 1993 #180 to victory in the Fuel Economy Run with and average of 42.4 miles per gallon. I beat my former record set in 2015 driving my 2015 C7 coupe automatic by 1 tenth of a gallon per mile.

The ZR-1 is still King of the Hill, LOL

Dave Noble
Raymore MO

:proud:

[ghlkal]

Wow ... we need more details. How'd you do that?

[Tripler]

Wow indeed . Congrats . How did you do it . Inquiring minds want to know ...
The King will always be King
;)

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[dnobull]

Some of the things I did are as follows:
Tires 44lbs
Fill tank very slow with car pointing down hill if possible
upon the return fill car very fast with car pointing up hill if possible

in my case I had to fill with the car nearly level both times

Use the highest non ethanol fuel which is 91 in the mid west
Do not turn on the power key to 405hp
Practice lugging 6th gear down to 30mph.
Always increase speed going down hill to make the next hill with out a down shift
Push the clutch in any time that the RPM will lower if you can coast
Fuel use is less with the engine lugging when the RPM are lower than normal idle like 700 RPM at 28mph. Only do this on level ground or slightly down hill.
Turning the engine off when at stops with traffic in front
Start up in 2nd gear and go to 5th at 20mph
If you practice and notice any pinging add octane booster (I did not need it)
Use the rear window latch that allows the rear glass to be open and turn off the air.
Also crack the side windows slightly if the cabin is uncomfortable

My computer showed 31mpg and the roads were curvy and hilly
The rest is in the other tips

77 miles on 1.816 gallons of fuel

I tried to turn the key off and coast with the key back on and restart with the clutch, but the odometer does not work on my 93 if the engine is not running. The mileage is taken at the start and finish, therefore I had to leave the engine running the entire time

Dave:)

[shawn8492]

You did a great job Dave! I enjoyed meeting you and your wife at Eureka, and your Z is beautiful. I was also cool that we were able to have our Z's side by side for the show, they attracted a lot of attention.
Shawn

[dnobull]

Hi Shawn,

I did not realize the reply was from you at first. Thanks, I presume that I can look up your actual email address for future reference.

Certainly agree that it was nice to meet you also. Dana & I go to car shows any more just to meet new people. I have tried for 7 years to win something in this show,

I think I mentioned that this is a political event. It turned out that I got third because I joined the LoanStar club last week. 1st & 2nd were also LoanStar members. I know I also had help from LakeOzark which I am also a member. but last year I decided to join 2 clubs for this year. Go figure.

Dave

[Kevin]

Some of the things I did are as follows:
Tires 44lbs
Fill tank very slow with car pointing down hill if possible
upon the return fill car very fast with car pointing up hill if possible

in my case I had to fill with the car nearly level both times

Use the highest non ethanol fuel which is 91 in the mid west
Do not turn on the power key to 405hp
Practice lugging 6th gear down to 30mph.
Always increase speed going down hill to make the next hill with out a down shift
Push the clutch in any time that the RPM will lower if you can coast
Fuel use is less with the engine lugging when the RPM are lower than normal idle like 700 RPM at 28mph. Only do this on level ground or slightly down hill.
Turning the engine off when at stops with traffic in front
Start up in 2nd gear and go to 5th at 20mph
If you practice and notice any pinging add octane booster (I did not need it)
Use the rear window latch that allows the rear glass to be open and turn off the air.
Also crack the side windows slightly if the cabin is uncomfortable

My computer showed 31mpg and the roads were curvy and hilly
The rest is in the other tips

77 miles on 1.816 gallons of fuel

I tried to turn the key off and coast with the key back on and restart with the clutch, but the odometer does not work on my 93 if the engine is not running. The mileage is taken at the start and finish, therefore I had to leave the engine running the entire time

Dave:)
Well done and very impressive but this sounds like my definition of hell

[efnfast]

That is impressive, but the way you fill the car is cheating (not sure that is the right word, but it doesn't represent actual mileage gains).

[dnobull]

I will agree but since others do this it is what happens. The good news is that I really did get 31 on the computer and that would have won my class also. I was told about the filling method several years ago by someone else who got outrageous economy. Not trying to hide anything here just trying to let it be out there on how it works at Eureka Springs

[shawn8492]

I will agree but since others do this it is what happens. The good news is that I really did get 31 on the computer and that would have won my class also. I was told about the filling method several years ago by someone else who got outrageous economy. Not trying to hide anything here just trying to let it be out there on how it works at Eureka Springs

I wouldn't call it cheating, I would call it "technique." If you break a rule, that is cheating :)

Your car looked great and the paint was awesome. I am glad to see a Z take an award. I have been going to this show for years, and only put a car in once or twice. I will do it every year from now on because I had such a great time visiting with everyone.
Shawn

[DRM500RUBYZR-1]

Congratulations to 93 # 180 from 93 #181.
Very interesting methodology!
:cheers:
Marty

[lfalzarano]

Or you can drive at 60 mph and get 30 mpg. But then you risk getting hit from behind and your saving are gone... [emoji847]


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[dnobull]

Shawn,

If you want to up your chances for a win, Join the Tulsa Vette club. Except for this year they have won the club participation award for the last 20 years. I joined the LoanStar Club because our son lives in Dallas & I want to go to their event at the Texas Motor Speedway next May.

Like I mentioned it is not a real car show but a social and political event.

I found 3 things that need repair during this week. The passenger side window switch only goes up but not down. The Brake light on the dash stays on unless I tap the peddle and the center council lock broke so I need to pull that and re do it or replace the lid.

Thanks for your support and friendship

Dave

[Billy Mild]

Shawn,

If you want to up your chances for a win, Join the Tulsa Vette club. Except for this year they have won the club participation award for the last 20 years. I joined the LoanStar Club because our son lives in Dallas & I want to go to their event at the Texas Motor Speedway next May.

Like I mentioned it is not a real car show but a social and political event.

I found 3 things that need repair during this week. The passenger side window switch only goes up but not down. The Brake light on the dash stays on unless I tap the peddle and the center council lock broke so I need to pull that and re do it or replace the lid.

Thanks for your support and friendship

Dave

So are you located in raymore or texas?

[Mystic ZR-1]

FWIW: my dash/computer mpg readout is consistently off by 11% (low)
when compared to the old way of checking mileage
30 mph in 6th? That's gotta be good for the car...

[shawn8492]

Dave,
I was talking to some very nice folks from the Lonestar Club. I have been to that show once back in 1997 or so, and it was great! I want to go back, so I may see you there.
Shawn

[FU]

Keep on lugging that engine down and you are going to be in for a surprise.

[Paul Workman]

Well...NOT to be "contrary", but you drive a ZR-1 like a Prius and get congratulated for it? Oh! IMO, that just seems SO WRONG in so many ways!:cry: (Or, is it just me off my meds again?):p

[secondchance]

Well...NOT to be "contrary", but you drive a ZR-1 like a Prius and get congratulated for it? Oh! IMO, that just seems SO WRONG in so many ways!:cry: (Or, is it just me off my meds again?):p

No. It's not just you.:cheers:

[MarkSS]

Last week I drove my 1990 around 600 miles of mostly 75 mph interstate, but some town and averaged 25.1 mpg. What is funny is a guy in an F150 that was at the same meeting I went to asked if it was hard on gas....

[Bob Eyres]

There was a phrase in The Godfather that described this type of behavior. Like selling heroin to school children, it's an "iInfamnia".
Lugging a ZR-1 is a shameful, vile deed.


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[Tripler]

I did the fuel efficient thing with my Honda Civic a few years back . I did what he said he was doing to improve fuel economy and eventually the car began to have mechanical issues and caught fire so I highly recommend he take that car out and give it a few Italian tuneups and never go for fuel econmy runs ever again . He will destroy the engine period .

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[efnfast]

I'm always pretty pleased that my 500 hp, 1990 car is the most fuel efficient car I own.