If you go to the chart, then change around your tire size to 185/75/15, then
You get the Idea. You will by just changing tire size affect your speed.
Red line @ 6000 rpm's.
From: datsunmike <email@example.com>
To: Patrick P. Castronovo <firstname.lastname@example.org>; Ryan, Richard
<RRyan@frk.com>; 'Datsun Roadsters' <email@example.com>
Date: Thursday, February 08, 2001 2:21 PM
Subject: Re: Gas Mileage
>According to an article I read regarding MPG and engine efficiency you may
>not get better gas mileage in 5th at the same highway speed. It has to do
>with cams and breathing and operating the engine at optimum efficiency
>is usually close to peak torque. If the car is lugging around in 5th it may
>get better gas mileage in 4th where the engine is at its most efficient
>Several years ago BMW came to the conclusion after extensive testing that
>the best way to get the most MPG in city driving is to accelerate with the
>go pedal fully depressed and short shifting rather than gradual
>as most of us do. The idea is to keep the butterflies fully opened, the
>way a diesel operates. It's the WOT that brings peak efficiency to the
>engine and allows full breathing.
>----- Original Message -----
>From: "Patrick P. Castronovo" <firstname.lastname@example.org>
>To: "Ryan, Richard" <RRyan@frk.com>; "'Datsun Roadsters'"
>Sent: Wednesday, February 07, 2001 10:30 PM
>Subject: Re: Gas Mileage
>> If you're not kidding, and truly do not know the answer, you get better
>> mileage in 5Th gear, OF COURSE!
>> -----Original Message-----
>> From: Ryan, Richard <RRyan@frk.com>
>> To: 'Datsun Roadsters' <email@example.com>
>> Date: Wednesday, February 07, 2001 5:44 PM
>> Subject: Gas Mileage
>> >With everyone talking about MPG I have a question.
>> >Assume you have a 2000 Roadster and you are driving on a flat freeway at
>> >Which gets better gas mileage?
>> >A. Fourth gear at 4,000 rpm
>> >B. Fifth gear at 3,200 rpm
>> >(I think these rpm estimates are about right. I haven't driven mine in
>> >Dick Ryan ex. 24022
>> >Risk Management Dept.
>> >SM 2000/2
>> >FAX (650)312-5830
>> >You just can't compare an Altima to the roadster. Apples vs. Oranges!
>> >My '66 2000 cruises between 4000 and 4500 rpm at highway speeds, and I'm
>> >getting about 26 mpg. I've got the 1600 rear end (3.90?). In city
>> >stop and go, the mileage drops below 20 mpg, where the tach is often at
>> >3000 (peppy!). Lower rpms do NOT guarantee consuming less gasoline. And
>> >know quite a few of the other BADROC'rs are getting similar mpg, about
>> >to 28 mpg on the highway.
>> >Fred - So.SF
>> >3800 RPM on the Highway is consuming a lot of Gasoline. My '98 Altima
>> >27 on the highway and it is turning at 2200 RPM @ 60 mph. You must be
>> >about 20 MPG. I know my roadster(67.5 2000 w/Solex) gives me 30 MPG on
>> >highway. I don't know the Ratio.
>> >> I have the 4.11 LSD on my Solex U-20, I really don't think it makes
>> >>that much of a difference in around town gass mileage. On the freeway
>> >>turning maybe 3800rpm at the super fast CA freeway cruising speeds.
>> >> But I do think that it makes a difference in low rpm power. The
>> >>car really does feel more peppier.
>> >> Daniel 69 2000