before you go into the expense of changing your rear end, try dropping to a
13" tire, and you will see the difference using a higher geared rearend will
feel like.(411) You will have a faster pickup, but your top end and your
Gas Mileage will suffer. Pat
-----Original Message-----
From: Adam Bradley <ambradley@yahoo.com>
To: datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>
Date: Wednesday, February 07, 2001 5:46 PM
Subject: Rear End (was Re[2]: EFI / custom engine)
>About the different rear end, I've got a '70 1600 with 195/60/14 tires.
> I plan to replace these with 195/50/15, which is actually a fraction
>of an inch smaller in outer diameter than 195/60/14. It was suggested
>to me that I might want to replace my 1600 rear end with a 2000 rear
>end, as the lower tires turn my 3.90 into more like a 4.11, reducing my
>top speed and increasing RPMs at a given speed. Any thoughts?
>
>Adam
>1970 1600
>1967 1600 (probably sold this Saturday)
>
>--- Fred_Katz@ci.sf.ca.us wrote:
>> Pat,
>>
>> 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
>> driving,
>> 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 I
>> know quite a few of the other BADROC'rs are getting similar mpg,
>> about 24
>> to 28 mpg on the highway.
>>
>> Fred - So.SF
>> BADROC
>>
>> ______________________________ Reply Separator
>> _________________________________
>> Subject: Re: EFI / custom engine
>> Author: "Patrick P. Castronovo" <slick1@mohaveaz.com>
>> Date: 2/7/2001 1:20 PM
>>
>>
>> 3800 RPM on the Highway is consuming a lot of Gasoline. My '98
>> Altima gets
>> 27 on the highway and it is turning at 2200 RPM @ 60 mph. You must
>> be at
>> about 20 MPG. I know my roadster(67.5 2000 w/Solex) gives me 30 MPG
>> on the
>> highway. I don't know the Ratio.
>> Pat.
>> -----Original Message-----
>> From: Daniel Neuman <dneuman@quark.sfsu.edu>
>> To: slick1@mohaveaz.com <slick1@mohaveaz.com>
>> Cc: Erickson Philip <philip.erickson@Agouron.COM>; "ROADSTER
>> (E-mail)"
>> <datsun-roadsters@autox.team.net>
>> Date: Wednesday, February 07, 2001 12:04 PM
>> Subject: Re: EFI / custom engine
>>
>>
>> >Hello,
>> > 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 I am
>> >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
>> >
>> >> I would think that using a 4.11, or 4.38 Rear End would be great
>> for the
>> >> track, but for the street application it would be revving high,
>> and on
>> the
>> >> Highway it would reduce your top end and severely affect your Gas
>> Mileage.
>> >> But hey! I know all you roadster owners are Independently Wealthy,
>> So
>> what
>> >> the hey! Go for it. Pat
>> >> -----Original Message-----
>> >> From: Erickson, Philip <philip.erickson@Agouron.COM>
>> >> To: ROADSTER (E-mail) <datsun-roadsters@autox.team.net>
>> >> Date: Wednesday, February 07, 2001 8:17 AM
>> >> Subject: EFI / custom engine
>> >>
>> >>
>> >> >Ronnie said "Looks to me like a blueprinted bottom end with a
>> >> >mildly ported head with careful cam selection, around 9.5 or 10
>> to 1 CR
>> >> >and EFI, along with a 4.11 or 4.38 rear end would be a killer
>> combination"
>> >> >
>> >> >my sentiments exactly , I guess I should have kept my fingers
>> quit.
>> <grin>
>> >> >
>> >> >Philip Erickson
>> >> >San Diego Calif. 92121
>Yahoo! Auctions - Buy the things you want at great prices.
>http://auctions.yahoo.com/
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