What I meant is if you wanted to see what you would in essence be doing, is
to "TRY" using 2 rear wheels in the 13" rim and tires.(Corvair will fit)
then you will see for yourself with smaller tires, you will go SLOWER, and
if you go to a 4.11 rearend, you will go slower still.
PAT
-----Original Message-----
From: Adam Bradley <ambradley@yahoo.com>
To: Patrick P. Castronovo <slick1@mohaveaz.com>;
datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>
Date: Wednesday, February 07, 2001 7:10 PM
Subject: Re: Rear End (was Re[2]: EFI / custom engine)
>No, I want BIGGER rims, not smaller! But I could get some 13x10
>positive offset gold wire wheels and some really small tires - cool!
>
>But seriously, is that a YES to changing the rear end to give me a
>better freeway speed driveability/mileage?
>
>--- "Patrick P. Castronovo" <slick1@mohaveaz.com> wrote:
>> 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/
>Get personalized email addresses from Yahoo! Mail - only $35
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