Fram air filter for TJ-poor mpg

And it still runs?
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
God Bless America, =DFill O|||||||O
http://www.billhughes.com/

I didn't start charting my mileage until after I got a clone K&N. But I
know if I drive smart I've gotten upwards of 20mpg...best was 22mpg....but
I'm usually 17 just keeping up with the F1 drivers on the 400!


"Mike Romain" > wrote in message
...
> LOL!
>
> Aha!
>
> Something has ben bugging me about the new Jeep's crappy mileage....
>
> Some folks say they can get 17 to 20+ mpg which is getting a bit close
> to what the old 258 carb engine gives me and what my Cherokee 4.0 gives,
> 23+ mpg and others say they only get 13 - 14 mpg....
>
> Could it just be the air filters? I don't use foam covered filters.
>
> I think that would sure be worth looking into!
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Jerry Bransford wrote:
>>
>> The OE air filter also has that same type of foam glued to it. I doubt
>> it was the foam itself.
>>
>> matt wrote:
>> > About 2 weeks ago, I put new plugs and a new air filter in my 03 sport.
>> > I used the stock champion plugs. It has about 45k on it. Oh yeah, it
>> > is a 5-speed, 6cyl, all stock, etc.
>> >
>> > No problem with the plugs. It was the air filter.
>> >
>> > I bought a fram, which I usually wouldn't do, but...
>> >
>> > The air filter had a 3/8" block of black foam glued on the bottom of
>> > it. I've replaced the filter before, and never seen this.
>> >
>> > My mileage instantly went from about 17mpg down to 14.5mpg. this went
>> > on for 3 tanks of gas. My tire press. was ok.
>> >
>> > the only thing I could think of was that strange piece of foam loosely
>> > glued on. So I took that piece off. To say the least, it was barely
>> > glued on.
>> >
>> > And my mileage went right back to 17.
>> >
>> > So when did they start gluing blocks of foam to their air filters?
>> > And why, especially if it's going to kill your mileage. It's the same
>> > dimensions, pleating and all, as a stock filter.
>> >
>> > matt
>> >
>>
>> --
>> Jerry Bransford
>> PP-ASEL N6TAY
>> See the Geezer Jeep at
>> http://members.cox.net/jerrypb/

If I run 120-130 kph on the 400's I get about the same drop. If I kick
back at 105-110 or so I get better, the 23 mpg or 11L/100 km. On Hwy. 7
running less than 100 kph, closer to the speed limit of 80 I get up to
26 mpg.

I have a 200 mile gas station to gas station trip I take regularly so
have lots of chance to check it. Almost $5.00 more to run it with the
front hubs locked in because of snow potential on that 200 miles.

I run a generic filter air I believe. Chain store brand. My carb stays
pretty clean for all the dirt I run so they work well. Been using them
since the 70's on all my vehicles.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

SteveBrady wrote:
>
> I didn't start charting my mileage until after I got a clone K&N. But I
> know if I drive smart I've gotten upwards of 20mpg...best was 22mpg....but
> I'm usually 17 just keeping up with the F1 drivers on the 400!
>
> "Mike Romain" > wrote in message
> ...
> > LOL!
> >
> > Aha!
> >
> > Something has ben bugging me about the new Jeep's crappy mileage....
> >
> > Some folks say they can get 17 to 20+ mpg which is getting a bit close
> > to what the old 258 carb engine gives me and what my Cherokee 4.0 gives,
> > 23+ mpg and others say they only get 13 - 14 mpg....
> >
> > Could it just be the air filters? I don't use foam covered filters.
> >
> > I think that would sure be worth looking into!
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Jerry Bransford wrote:
> >>
> >> The OE air filter also has that same type of foam glued to it. I doubt
> >> it was the foam itself.
> >>
> >> matt wrote:
> >> > About 2 weeks ago, I put new plugs and a new air filter in my 03 sport.
> >> > I used the stock champion plugs. It has about 45k on it. Oh yeah, it
> >> > is a 5-speed, 6cyl, all stock, etc.
> >> >
> >> > No problem with the plugs. It was the air filter.
> >> >
> >> > I bought a fram, which I usually wouldn't do, but...
> >> >
> >> > The air filter had a 3/8" block of black foam glued on the bottom of
> >> > it. I've replaced the filter before, and never seen this.
> >> >
> >> > My mileage instantly went from about 17mpg down to 14.5mpg. this went
> >> > on for 3 tanks of gas. My tire press. was ok.
> >> >
> >> > the only thing I could think of was that strange piece of foam loosely
> >> > glued on. So I took that piece off. To say the least, it was barely
> >> > glued on.
> >> >
> >> > And my mileage went right back to 17.
> >> >
> >> > So when did they start gluing blocks of foam to their air filters?
> >> > And why, especially if it's going to kill your mileage. It's the same
> >> > dimensions, pleating and all, as a stock filter.
> >> >
> >> > matt
> >> >
> >>
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.cox.net/jerrypb/

A K&N is ok for a street vehicle but it filters too poorly for a Jeep
that is offroaded in dusty conditions. Tests show it really lets the
fine dust through, not a good thing. I have to run a K&N because my OBA
compressor takes up the space where my OE air filter box used to be but
get it so it was filtering well enough for my desert wheeling, I ended
up placing two pre-filters over the top of my K&N. Yes the combination
can still provide more air than my 4.0L engine is capable of consuming.

Jerry

wrote:
> What's wrong with K & N? I used one on a Stealth Twin Turbo for 3 years
> and seemed to get better mileage with it, so put one in my TJ too and
> haven't had problems. Does your recommendation apply to both the tube
> add-on and the regular box air filters?
> Thanks in advance.
>
> Matt
>

--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.cox.net/jerrypb/

I'm the same as Mike with the xj, if I stay in the 'normal" range of 110-115
I get great mileage, less then 100 (if I want to be like the dumb stupid
#$%^&*&*& who insist on driving the 400's during a snow fall, when they
can't drive for **** to begin with" then I get pretty close 26mpg. Yeah
the few times I decide to take the jeep into the warp speeds the posers and
rice burners do I get right down to 15-16 mpg. This of course is all
relative to how many transport trucks I decide to draft. In 2 weeks I'm
going North with the truck, I figure I'll get about 20 mpg depending on 3
things, 1 how many ricers I see, 2 how many transports I follow and 3 how
much of the trip the wife is awake for

Snow...


"SteveBrady" <steve.brady@(remove this)rogers.com> wrote in message
...
>I didn't start charting my mileage until after I got a clone K&N. But I
>know if I drive smart I've gotten upwards of 20mpg...best was 22mpg....but
>I'm usually 17 just keeping up with the F1 drivers on the 400!
>
>
> "Mike Romain" > wrote in message
> ...
>> LOL!
>>
>> Aha!
>>
>> Something has ben bugging me about the new Jeep's crappy mileage....
>>
>> Some folks say they can get 17 to 20+ mpg which is getting a bit close
>> to what the old 258 carb engine gives me and what my Cherokee 4.0 gives,
>> 23+ mpg and others say they only get 13 - 14 mpg....
>>
>> Could it just be the air filters? I don't use foam covered filters.
>>
>> I think that would sure be worth looking into!
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>>
>> Jerry Bransford wrote:
>>>
>>> The OE air filter also has that same type of foam glued to it. I doubt
>>> it was the foam itself.
>>>
>>> matt wrote:
>>> > About 2 weeks ago, I put new plugs and a new air filter in my 03
>>> > sport.
>>> > I used the stock champion plugs. It has about 45k on it. Oh yeah, it
>>> > is a 5-speed, 6cyl, all stock, etc.
>>> >
>>> > No problem with the plugs. It was the air filter.
>>> >
>>> > I bought a fram, which I usually wouldn't do, but...
>>> >
>>> > The air filter had a 3/8" block of black foam glued on the bottom of
>>> > it. I've replaced the filter before, and never seen this.
>>> >
>>> > My mileage instantly went from about 17mpg down to 14.5mpg. this went
>>> > on for 3 tanks of gas. My tire press. was ok.
>>> >
>>> > the only thing I could think of was that strange piece of foam loosely
>>> > glued on. So I took that piece off. To say the least, it was barely
>>> > glued on.
>>> >
>>> > And my mileage went right back to 17.
>>> >
>>> > So when did they start gluing blocks of foam to their air filters?
>>> > And why, especially if it's going to kill your mileage. It's the same
>>> > dimensions, pleating and all, as a stock filter.
>>> >
>>> > matt
>>> >
>>>
>>> --
>>> Jerry Bransford
>>> PP-ASEL N6TAY
>>> See the Geezer Jeep at
>>> http://members.cox.net/jerrypb/
>
>

You know, one thing I've been curious about is how the tire size will relate
to mpg - taller tires give you higher or lower mpg. I can argue it either
way in my head.

Ken

Ken Knapp did pass the time by typing:
> You know, one thing I've been curious about is how the tire size will relate
> to mpg - taller tires give you higher or lower mpg. I can argue it either
> way in my head.

I went from 215 to 225 and saw doodle difference. Generally I think that
city mileage would get worse with taller tires (more power required to
accelerate) and highway would be better (lower rpm for a given distance)

I've seen a greater difference in milage from dirty air filters, fuel
filters, spark plugs, burned rotors, and vac leaks, than anything.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Hi Ken,
It takes more energy to turn the larger tire because of it's
heavier weight.
God Bless America, ßill O|||||||O
http://www.billhughes.com/

Ken Knapp wrote:
>
> You know, one thing I've been curious about is how the tire size will relate
> to mpg - taller tires give you higher or lower mpg. I can argue it either
> way in my head.
>
> Ken

On Wed, 2 Feb 2005 22:10:49 -0500, "Ken Knapp"
> wrote:

>You know, one thing I've been curious about is how the tire size will relate
>to mpg - taller tires give you higher or lower mpg. I can argue it either
>way in my head.
>
>Ken
>

I drive 135 miles a day to work and back. When I first got my Jeep I
it had 30x9.50's on it. Mileage? Almost exactly 20 mpg.
I went with 235-75R15 replacement tires and my mileage never changed a
bit. Still takes 7 gallons a day to commute.

--
Old Crow
'82 Shovelhead FLTC 92" 'Pearl'
'95 Jeep Wrangler YJ
TOMKAT, BS#133, SENS, MAMBM, DOF#51, SPUNGER#2