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Date: Tue, 21 Oct 1997 22:43:16 -0600 (MDT)
From: owner-fordtrucks80up-digest ListService.net (fordtrucks80up-digest)
To: fordtrucks80up-digest ListService.net
Subject: fordtrucks80up-digest V1 #181
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Sender: owner-fordtrucks80up-digest ListService.net


fordtrucks80up-digest Tuesday, October 21 1997 Volume 01 : Number 181



=======================================================================
Ford Truck Enthusiasts - 1980 And Newer Trucks Digest
Visit our web site: http://www.ford-trucks.com
- - - - - - - - - - - - - - - - - - - - - - -
To unsubscribe, send email to:
fordtrucks80up-digest-request listservice.net
with the word "unsubscribe" in the body of the message. For help, send
email to the same address with the word "help" in the body of the
message.
=======================================================================
In this issue:

Aftercooler for P/S [peter.arnold.01 snet.net (peter.arnold.01)]
Exhaust length/Back Pressure [Gary Snook ]
RE: Aftercooler for P/S ["Bitting, Greg" ]
Re: Lowering to level ["Ryan Penner" ]
Re: Underdrive pulleys [Midwest96 aol.com]
Re:97 Ranger cutting out 100+ mph ["Mike Wiatt" ]
Bad Bearings - NO POWER UPHILL [Gary Snook ]
Re: Tornado [bob ]
[Fwd: WWWBoard Message 1969] [bob ]
Re: Sports car interior [Joe Maleski ]
Re: 1997 Ford Ranger [Dave Armbruster ]
Winter Tires ? ["Chris" ]
Re: 1997 Ford Ranger [bob ]
Re: non-painted big block [Joe Maleski ]
Switching Between Dual Tanks [Joe Maleski ]
Tires ["Casey Vandor" ]
1999 F250&F350 [Natedog199 aol.com]
re: 1999 F250&F350 [KNBD87D prodigy.com (MR JOSH J TENNEY)]
F350 clutch interlock defeat ["Todd A. Muccilli"
re: Winter Tires ? [KNBD87D prodigy.com (MR JOSH J TENNEY)]
Re: FELP. No power up hill and doesn't stay running [William Street
Re: How do I get off the List? ["Ron McDonald" ]
FS: '90 F-250 4x4 Supercab ["John D. Bowne" ]
Re: Lowering to level ["Bear" ]
Lifter Replacement ["Mark J. Salvetti" ]
86' bronco engine swap [JEREMY GRAMKOW ]
Re: Question regarding altitude [fwise juno.com]
F-150 Front Tire Wear ["Mark J. Salvetti" ]
Re: Tornado [Midwest96 aol.com]
Re: Dual tank question [Midwest96 aol.com]
LOWERING TO LEVEL ["Jeff Wey" ]

=======================================================================

----------------------------------------------------------------------

Date: Sun, 19 Oct 1997 20:05:16 GMT
From: peter.arnold.01 snet.net (peter.arnold.01)
Subject: Aftercooler for P/S

Does anyone make an addon aftercooler for the PowerStroke? I
understand that it is a way to "Free" perfomance increase on a "Smoke
Motor"

------------------------------

Date: Tue, 21 Oct 1997 17:30:09 -0500
From: Gary Snook
Subject: Exhaust length/Back Pressure

By looking at a P51 Mustange exhaust pipes, I would guess they aren't over
about 6" long. I have never seen under the cowling to verify this, but I
have heard them run, and there are NO mufflers. As far as damaging the
valves ......I don't think this is viable.

.02 $ worth

Gary

------------------------------

Date: Tue, 21 Oct 1997 15:25:11 -0700
From: "Bitting, Greg"
Subject: RE: Aftercooler for P/S

What is "Power Stroke"?

>-----Original Message-----
>From: peter.arnold.01 snet.net [SMTP:peter.arnold.01 snet.net]
>Sent: Sunday, October 19, 1997 1:05 PM
>To: fordtrucks80up ListService.net
>Subject: Aftercooler for P/S
>
>Does anyone make an addon aftercooler for the PowerStroke? I
>understand that it is a way to "Free" perfomance increase on a "Smoke
>Motor"
>+-------------- Ford Truck Enthusiasts - 1980 and Newer --------------+
>| Send posts to fordtrucks80up listservice.net, |
>| Send Unsubscribe requests to fordtrucks80up-request listservice.net |
>+----------------- Site: http://www.ford-trucks.com -----------------+

------------------------------

Date: Tue, 21 Oct 1997 16:37:18 -0600
From: "Ryan Penner"
Subject: Re: Lowering to level

- -----Original Message-----
From: Luke Wells
To: fordtrucks80up listservice.net
Date: Tuesday, October 21, 1997 3:27 PM
Subject: Lowering to level


>I have a 96 Ranger Splash and was wanting to lower the back level to the
>front
>but have no clue on how many inches to do it to. I also would like to
>know what
>would be the most cost efficient method(no spring cutting or anything
>like that)
>to do so that would keep the smoothness of my ride the same. Thanx
>
>+-------------- Ford Truck Enthusiasts - 1980 and Newer --------------+
>| Send posts to fordtrucks80up listservice.net, |
>| Send Unsubscribe requests to fordtrucks80up-request listservice.net |
>+----------------- Site: http://www.ford-trucks.com -----------------+

Go to the hardware store buy some sand bags and put those
in the back. That is what I did.

------------------------------

Date: Tue, 21 Oct 1997 18:39:56 -0400 (EDT)
From: Midwest96 aol.com
Subject: Re: Underdrive pulleys

In a message dated 97-10-21 16:05:26 EDT, you write:


the Ranger. I have contacted Unorthodox Racing and have possibly
convinced them to make up a set of em. If anyone knows where to get a
set of the pulleys let me know. If nobody makes the pulleys I guess you
wont have a big decision to make though. :-) >>

What are underdrive pulleys?

------------------------------

Date: Tue, 21 Oct 1997 16:08:46 PDT
From: "Mike Wiatt"
Subject: Re:97 Ranger cutting out 100+ mph

I had a problem with those speeds too the truck sputters and lurches and
I think its the rev limiter too(I believe it is set to under 5000rpm).
You can get a new chip(oops...module although it would be nice if it
was a chip). From what I have heard the JET chip doesnt do any thing
about the rev limiter but the one from Superchips does.

- ---------------------------------------------
pyro152 hotmail.com
'94 Ranger Supercab 4.0 5 speed
The Ford Ranger Pages
http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.geocities.com/MotorCity/Downs/7894
- ---------------------------------------------


______________________________________________________

------------------------------

Date: Tue, 21 Oct 1997 19:07:18 -0500
From: Gary Snook
Subject: Bad Bearings - NO POWER UPHILL

Mike;
It sounds like the cam was (is) out of time. If the cam is off a
tooth (retarded), this results in the same symptoms as the worn timing
chain. I have seen engines run that were several teeth off in timing. The
way to check this is to find the spec for your engine when the intake valve
opens in degrees, jerk off the valve cover, and rent, beg, or buy a dial
indicator and find out where the crank is at when the valve opens. As far
as the bad oil pressure, from my experience, the bearings, crank AND CAM
will be goners. Time for a short block? I think it is time for a second
opinion. Find a reputable FORD DEALER, and have them look at your truck.
Good Luck

Gary

------------------------------

Date: Tue, 21 Oct 1997 17:23:36 -0700
From: bob
Subject: Re: Tornado

Todd Metzger wrote:

> Geoffrey Hoffman wrote:
>
> > At 10:15 AM -0400 10/21/97, KSMIKE wrote:
> > >I have a Tornado in my 94 Explorer. Does it help? Who knows. I wouldnt believe
> > >anything except independent, controlled dyno or dragstrip tests. And I haven't
> > >seen any of those. I think my fuel line magnets gave me more power (sarcasm).
> >
> > by the way, what is the deal with those magnets? i know that they don't
> > really do anything, but are they supposed to be doing? seems like a weird
> > concept....
> >
> > --
> > Geoffrey Hoffman gch2 cornell.edu
> > Cornell University http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.pobox.com/~hoffy
> >
> > +-------------- Ford Truck Enthusiasts - 1980 and Newer --------------+
> > | Send posts to fordtrucks80up listservice.net, |
> > | Send Unsubscribe requests to fordtrucks80up-request listservice.net |
> > +----------------- Site: http://www.ford-trucks.com -----------------+
>
> Someone correct me if I am wrong, but the magnets were, in theory, supposed to
> almost "expand" your fuel. They thought that the magnets would separate any long
> chains of molecules that had inadvertently formed during production of the fuel,
> transport, etc. By breaking these long chains up, it was supposed cause the fuel
> to burn more efficiently.
> As for the Air tornado, I am not sure if this was stated in the original article or
> not(I didn't read it, I just deleted it), it causes turbulence, actually a
> spiralling motion, in the air flow. This is supposed to create a more homogenous
> mixture of gas and air. However, there is already plently of turbulence in the air
> flow, from your air filter, bends in the air intake tube, your upper and lower
> intakes, and finally when the air stream crashes into the top of your heads. It
> seems like a good idea in theory but rather poor when put to practical use.
>
> Todd Metzger
> tmetz umr.edu
>

Not only that, but in our modern fuel injected fords, there is no fuel in that air
until it gets to the injector, which on my engine, is right in front of the intake
valve.

Bob Heyl
'94 Lightning


- --

"I have a simple philosophy: fill what's empty,
empty what's full and scratch where it itches."
---Alice Roosevelt Longworth---

mailto:rheyl pacbell.net

------------------------------

Date: Tue, 21 Oct 1997 17:37:18 -0700
From: bob
Subject: [Fwd: WWWBoard Message 1969]

This is a multi-part message in MIME format.
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******* Forwarded Message *******

- --

"I have a simple philosophy: fill what's empty,
empty what's full and scratch where it itches."
---Alice Roosevelt Longworth---

mailto:rheyl pacbell.net


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Date: Tue, 21 Oct 1997 15:37:57 -0700
Message-Id:
From: renzo sonic.net
Subject: WWWBoard Message 1969
Reply-To: haleb abc.com

#
# Entered from proxy1.disney.com (204.128.192.50) with HTTP/1.0.
#
Brian Hale - ABC News 20/20 posted the following article in the WWWBoard

Dated : October 21, 1997 at 15:35:44
Subject: NYC Area Ford Paint Problems!

If you have a Ford with peeling, cracking or chipping paint, 20/20 needs you ASAP!!!!! Please call me immediately at (212) 456-7488. We are looking for vehicles to appear on our show!

If you e-mail me please include your phone number!


- --------------3095F33B591E86382939C58D--

------------------------------

Date: Tue, 21 Oct 1997 17:38:10 -0700
From: Joe Maleski
Subject: Re: Sports car interior

Matt,

I think you're nuts. :)

One of things I like about my truck is how easy it is to get in and out of
it. My other car is a honda del Sol and getting into it is like pulling on
a pair of tight pants. No thanks - give me a normal truck interior any day!

In fact, this is starting to scare me - the car-if-i-cation of truck
interiors. With all the sightings, etc. of the 1999 F-Series lately, has
anyone looked inside? Please tell me that the interior designers of the
current Taurus/Sable had nothing to do with it...

Joe

>Does anybody else think it would be really neat to convert a sports car
>interior so it can be fitted in a truck? Before you tell me im nuts just let
>me say... I know i am but sometimes good ideas come out. I was looking at a
>98 c****tte the other day and thought that this would be a great interior for
>cruisin the trails, just let me know what you think,
>Matt
>92 F 250 4x4 5.8L
>
>PS Dont be afraid to tell me im nuts

************************************
Joe Maleski
Santa Clara, CA
1994 F-250HD SuperCab 4X4, 460/5-spd

mailto:jmaleski auspex.com

------------------------------

Date: Tue, 21 Oct 1997 18:40:09 -0600
From: Dave Armbruster
Subject: Re: 1997 Ford Ranger

I heard once that the speed limiter cut in at 109, but I've never had to go
that fast to found out the number for sure. What does it do when you hit
the top end? I figured it began cutting off the ignition.

Dave

>It is the rev limiter I think .
>
>Bitting, Greg wrote:
>
>> Hello out there,
>> I own a 1997 Ford Ranger pick-up truck. It has in it a five
>> speed
>> manual transmission attached to a 4.0L engine. I have a problem with
>> the
>> truck shutting down at around 103 mph. What can I do to alleviate this
>>
>> problem? Also, I would like to bolt on a little extra horsepower,
>> where
>> would anyone recommend I start?
>> Thank you for your help.

------------------------------

Date: Tue, 21 Oct 1997 20:49:52 -0400
From: "Chris"
Subject: Winter Tires ?

I'm looking to buy some winter tires for my Ranger, and was wondering if
anyone knew what the conversion from my current tires would be to a tire of
a different series ?

Currently I have P235s on 15 inch rims that are 60 series.

I plan to go to a standard 15 inch rim and hope to put on 75 series tires.

Would that mean that the size of the tire should be a P205 ? or P215

I don't think that P235/75R15 & P235/60R15 tires will be the same size,
which would alter my spedometer (that's is if they would even fit)

Thanks in advance for any any responses.

Chris

'97 SPLASH

------------------------------

Date: Tue, 21 Oct 1997 17:48:31 -0700
From: bob
Subject: Re: 1997 Ford Ranger

Dave Armbruster wrote:

> I heard once that the speed limiter cut in at 109, but I've never had to go
> that fast to found out the number for sure. What does it do when you hit
> the top end? I figured it began cutting off the ignition.
>
> Dave
>

My Lightning shuts the fuel off at 110. I think that it just kills the fuel
pump.?

Bob Heyl
'94 Lightning

- --

"I have a simple philosophy: fill what's empty,
empty what's full and scratch where it itches."
---Alice Roosevelt Longworth---

mailto:rheyl pacbell.net

------------------------------

Date: Tue, 21 Oct 1997 17:29:53 -0700
From: Joe Maleski
Subject: Re: non-painted big block

Data point for you: My 1994 460 *is* painted from the factory. So at some
point (possibly in '95?) either ford stopped painting these engines or
yours got through sans color. Maybe towards the end of the production run
(I don't think they're making 460s anymore) they ran out of grey paint and
just figured the heck with it...

Joe

>One other point which I had presented to
>the list members and did not receive much response, my truck is equiped with
>the 460 and the block was never painted from the factory. Please if anyone
>out there has a '96 with a 460 look at it and tell me if they have the same.

************************************
Joe Maleski
Santa Clara, CA
1994 F-250HD SuperCab 4X4, 460/5-spd

mailto:jmaleski auspex.com

------------------------------

Date: Tue, 21 Oct 1997 17:24:21 -0700
From: Joe Maleski
Subject: Switching Between Dual Tanks

And now for the opposing view...

I can't imagine any reason why it would be detrimental to the fuel
injection system to switch between tanks while the engine is running. All
the switch does is simply turn one pump off and turn the other one on. The
fuel pumps are in the tanks and it is indeed a Bad Thing to run the tanks
dry before switching to the other tank, possibly this would cause premature
failure of the pump sending pieces towards the injector rail. The filter
should catch debris, though.

I have been switching between tanks "on the fly" for thousands of miles and
several years with no problems. I think that the dealers you talked to are
wrong on this one.

Joe

>To answer your question, my father had a company owned F250 (think it
>was a '90 or '91) that one of his apprentices drove around all the time.
>The apprentice would always just flip the tank switch as the truck was
>running, and after about 40K miles, the fuel injectors got screwed up.
>When they took it to the dealer to have them fixed, they said the tank
>switch while running was the reason. When I bought my truck, the
>dealer that I bought it from also warned me about this, and said that I
>should only switch when the truck was off. When I moved to another
>part of the state, my new local dealer said the same thing.
>
>
>>From: FOMOCONUT aol.com
>>Subject: Re: Dual tank question
>>
>>sorry no help.. but a question.. Why do you feel it so important to only
>>switch the tanks when the truck is not running? I do it all the time and
>>have
>>never had any problems...IMHO though I think you just expierienced
>>some type
>>of relay logic failure in getting the tanks to switch. Maybe never happen
>>again.
>>John L. Miller

************************************
Joe Maleski
Santa Clara, CA
1994 F-250HD SuperCab 4X4, 460/5-spd

mailto:jmaleski auspex.com

------------------------------

Date: Tue, 21 Oct 1997 17:38:03 -0800
From: "Casey Vandor"
Subject: Tires

While we are on the subject, would a set of 31 x 10.5 fit on a totally
stock '83 F-250 4x4? Do the tires rub at all when you turn hard over, or
at any other time? What about bottoming out in the back, if I load it
down, will the tires be pinched by the cutout for the wheels?
Thanks in Advance
Casey



------------------------------

Date: Tue, 21 Oct 1997 21:45:09 -0400 (EDT)
From: Natedog199 aol.com
Subject: 1999 F250&F350

I'm looking for pictures of the new truck. I want to buy a new truck. Should
I wait????
I want the powerstroke and an E4OD. Any pics would help.
Thanks

------------------------------

Date: Tue, 21 Oct 1997 21:57:13, -0500
From: KNBD87D prodigy.com (MR JOSH J TENNEY)
Subject: re: 1999 F250&F350

Pics will be available on Nov. 5....or that is atleast what Ford
tells us dealers. It is up to you to decide to wait or not. The
Power Stroke gets more power for '99. Ford says 500 lbs.-ft of
torque....HELL YEAH! The E4OD gets updated, too. Maybe it is a good
idea to wait. I am mailing (via U.S. Postal Service) Ken Payne some
sneak shots of the grille and taillight and interior tomorrow....so
he can put them on the website. As soon as more pics are available, I
will mail him those, too.
Josh
Lakeland Truck Center
KNBD87D prodigy,com

------------------------------

Date: Tue, 21 Oct 97 21:53:57 EDT
From: "Todd A. Muccilli"
Subject: F350 clutch interlock defeat

My 97 F-350 with manual transmission is equipped
with the clutch interlock that requires the clutch
to be engaged before the truck will start. What I
am looking to do is to "selectively defeat" this
interlock by means of a pushbutton. Unfortuantely,
I do not have a wiring diagram, nor do I know the
location of the interlock switch. Can anyone give
me some pointers on making such a modification?

Thanks in advance,
Todd

------------------------------

Date: Tue, 21 Oct 1997 22:04:08, -0500
From: KNBD87D prodigy.com (MR JOSH J TENNEY)
Subject: re: Winter Tires ?

My brother has a 4x2 splash, and he uses 235/75R15 Blizzak snow tires
for our MN winters. MUCH larger than stock 235/60R15s. 205's should
work well, but I don't have a calculator in front of me.

(width x 2 x aspect ratio) divided by: 24.5 and then add wheel
diameter
example (235 x 2 x .60) divided by 24.5 + 15 = ??

I got this equation out of 4 Wheeler Magazine (I think)

I have a '98 4x2 XLT with stock 225/70R14s. I bought a set of 15"
American Racing wheels and mounted 235/60R15's on them. The
225/70R14 are ALMOST exactly the same as 235?60R15s.

I hope this helps.

Josh
KNBD87D prodigy.com

------------------------------

Date: Tue, 21 Oct 1997 09:49:28 -0700
From: William Street
Subject: Re: FELP. No power up hill and doesn't stay running

I had about the same thing happen when they changed the timing belt
on my Ranger 4cyl. Almost identical symptoms. They were off a tooth
on the timing marks and had to re-install the belt - problem went
away and they didn't charge me to fix their screw-up.

Good luck.

Bill

Michael Wray wrote:
>
> Well,
>
> I have an 86 F250 with a 351. I just had the timing chain changed
> (preventive maintenance) and now the truck has no power up hill, the
> drive train is making noises, runs hotter than normal and it doesn't
> want to stay running.
>
[snip]
- --
========================================================================
'Progress & Web Consulting'

William Street Mailto:wstreet streetsys.com
Street Systems, Inc. http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.streetsys.com

------------------------------

Date: Tue, 21 Oct 1997 19:41:24 -0700
From: "Ron McDonald"
Subject: Re: How do I get off the List?



------------------------------

Date: Tue, 21 Oct 1997 19:40:33 -0700
From: "John D. Bowne"
Subject: FS: '90 F-250 4x4 Supercab

Howdy,

To make room for my upcoming '97 Crewcab, I need to sell my current pickup.
I can't think of a better audience for the ad. I live near Portland Oregon.

I have placed photos and an ad on a friends Web page:

http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.teleport.com/~lgtkp/forsale/forsale.html

In short, this is a:
1990 F-250 Supercab 4x4 8' bed, 5.8l w/5 spd, 3.55 axles, manual hubs.
White with a tan interior. Great condition.

It has only 36K miles on it. Yes, 36K. The truck has been a great truck and
I think that I've done a pretty good job caring for it. It spends its off
hours in a garage, and the shortest trip that it ever makes is about 20
miles (to work).

If this is interesting to you, please check out the Web site, or call/email
me for more details.

Thanks,

johnbo





John D. Bowne - Cornelius, OR
John.D.Bowne tek.com
+-----------------------------------------------+
| Stolen .Sig Line: |
| "Salad is not food. Salad is what food eats" |
| Corollary : |
| "If animals weren't meant to be eaten, |
| they wouldn't be made out of meat." |
|-----------------------------------------------|
| 2 Wheeled Toys 4 Wheeled Toys |
|-----------------------------------------------|
| '89 BMW K100RS '93 BMW 325i |
| '81 Honda XR250R '90 Ford F250 4x4 |
| '86 Yamaha Moto 4 |
+-----------------------------------------------+

------------------------------

Date: Tue, 21 Oct 1997 22:17:42 -0500
From: "Bear"
Subject: Re: Lowering to level

The additional weight will make it ride smoother....
>>I have a 96 Ranger Splash and was wanting to lower the back level to the
>>front
>>but have no clue on how many inches to do it to. I also would like to
>>know what
>>would be the most cost efficient method(no spring cutting or anything
>>like that)
>>to do so that would keep the smoothness of my ride the same. Thanx

>
>
>Go to the hardware store buy some sand bags and put those
>in the back. That is what I did.
>
>
>
>

------------------------------

Date: Tue, 21 Oct 1997 23:43:26 -0400
From: "Mark J. Salvetti"
Subject: Lifter Replacement

I'm posting this for a friend without Internet access.

He has a 1989 Bronco, 5L V8, about 88K miles.

His engine had a tapping noise, that a mechanic friend diagnosed as one =
or more bad lifters. When he went to replace them, he found several =
that could be easily compressed by just pushing down on the pushrods. =
No obvious wear on the old lifters, including no cupping or mushrooming. =
Rockers were supposedly OK too.

He bought and installed 16 new TRW lifters, reassembled everything, and =
when he started the engine, it actually made more noise than before. He =
ran it this way for a while, but the noise didn't improve.

Took everything apart again, and found 6 of the new lifters were very =
soft. He exchanged all 16 for new ones, put everything back together, =
and the tapping sounds got even worse again.

What's he missing here?

It just occurred to me that when I replaced the head gasket on my wife's =
Sable (3.8L V6), I had to rotate the crankshaft until each lifter was at =
its lowest position before tightening the corresponding rocker arm bolt. =
I have no idea if my friend did this, or if it even matters on a V8. =
Seems to me it would.

Any help or advice much appreciated.

Mark
1986 F-150

------------------------------

Date: Tue, 21 Oct 1997 21:42:35 -0600
From: JEREMY GRAMKOW
Subject: 86' bronco engine swap

I own an 86' full size bronco with a fuel injected 302 and aod. I find
this combo to be a real dog. The engine has 180,000 miles on it and I
am sure it is due for a rebuild. I have been thinking recently about
buying a fuel injected 351 from a salvage yard and rebuilding it. I
would like to add an rv cam. Any suggestions on what cam would be
best? Which cams are compatible with the fuel injection? If I put a
351 in the truck will it need a new computer? Someone told me that it
might just need a different chip. Is this true?
Another problem I come across is that I do not find very specific info
on fuel injected 86' 302s. All of my maintenence info is found in a
87-91 f-series chilton manual. Are there many fuel injected 86'
f-series trucks?
I would really like to rebuild this engine to get more usable (low end)
power and the most reasonable way I see is to put the 351 in it. I have
also been spoiled with fuel injection and don't want to part with it.
Any advice would be greatly appreciated.
Thanks, Jeremy

------------------------------

Date: Tue, 21 Oct 1997 22:12:33 -0500
From: fwise juno.com
Subject: Re: Question regarding altitude

With computer controlled fuel injection, driving at altitude improves
fuel mileage because the computer leans out the mixture. The air is less
dense("thinner"), therefore it requires less fuel to ensure proper
combustion.

Unfortunately, this same decrease in air density also decreases power,
since after all, you are burning less fuel, so, less power. Your turbo
"masks" the effects of altitude considerably, by compressing the incoming
charge.

My 94 Ranger with 3.0L V6 normally gets 24-26 mpg in highway driving in
my part of the world (South Central Texas, altitudes ranging from sea
level around Corpus Christi to about 875 feet in the Hill Country). Two
trips to Colorado (two years apart) saw me getting 28 mpg in the lower
parts of the state, with one tank at 29.8 and one at 30.1 driving mostly
between 9-12000 feet. Of course, the word power became a euphemism at
those altitudes, but the computer leaned the mixture out sufficiently to
allow the engine to run quite smoothly. Carbureted cars from low altitude
areas often run poorly in the mountains, since they lack computerized
mixture control and are usually running way too rich.

So Chris, your friend is definitely wrong about using more fuel with
thinner air, and he is wrong about more power up high, but he is correct
about mileage improving with altitude (if the mixture is properly leaned
out, and you don't have to shift down too far, using more revs and
burning more gas in spite of the leaner mixture).

"Thundercraft" replied (I believe jokingly) that perhaps the thinner air
reduced the aerodynamic drag on the vehicle, thereby increasing the
mileage. Actually, Thundercraft, you are correct. At highway speeds, aero
drag is a major influence on fuel economy. This is why 5 liter Mustangs
get better highway mileage than F150s with the same engine (assuming that
both are relatively stock and driven at similar speeds). They have lower
frontal areas and lower coefficients of drag, so if you equalize
revs/mile, the Mustang does much better. Some will talk about weight
differences, but on relatively level roads, once up to speed, weight has
little effect upon mileage.

If anyone follows bicycle racing, attempts to better the hour record are
normally made in places like Mexico City, where altitude decreases drag
significantly. Of course, with human powered vehicles, you don't want to
go too high, as decreased partial pressure of oxygen also decreases
performance. Hmmm, that sounds just like what happens with gasoline
powered vehicles.

Hope this helps,

Fred Wise
94 Ranger Supercab 3.0L

------------------------------

Date: Tue, 21 Oct 1997 23:53:06 -0400
From: "Mark J. Salvetti"
Subject: F-150 Front Tire Wear

I have a 1986 F-150, 2WD, 5.0L. I've had it about 3 years, and it has =
always chewed up the outer edge of the right front tire. I've had the =
alignment done by several different shops, and each time they said they =
got it within spec. The last time, I had to replace the ball joints on =
that side. The uneven wear has continued.

I swapped the fronts with each other to even out the wear a bit (the =
rear tires are nearly new; when I get this wear problem solved I will =
replace the fronts), and now the truck pulls to the right. Before the =
rotation, it tracked straight.

My tire shop is not surprised by this. They tell me that with the =
I-beam suspension, the right will wear faster than the left because of =
the way the roads are crowned, and most turns are to the right. The =
pulling I have now is because one of the internal belts of my most worn =
tire has shifted.

This sounds kind of hokey to me, but they seemed pretty confident. Is =
this front tire wear I'm seeing on just one side normal, or is there =
something else I need to check?

Thanks!

Mark Salvetti
1986 F-15o

------------------------------

Date: Tue, 21 Oct 1997 18:07:43 -0400 (EDT)
From: Midwest96 aol.com
Subject: Re: Tornado

In a message dated 97-10-21 11:59:30 EDT, you write:


of my truck. Results are amazing. I can't really explain how it
works, but I'm sure I must be getting a bazillion miles per gallon and....


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