Re: [AMC-list] 4.0L mileage

[wrambler242 <wrambler242@xxxxxxxxxxx>]

I never actually tried to get better mileage than what it gets. The engine is 95 shortblock, bone stock w the mopar HV oilpump, freebie so I used it. Head is a 93ish with 60-70K on it. I did a dasic port and polish concentrating on edges at the intake and taper then smoothing the valve guides and cleaning up the edges at the valve seat to port areas. No real science there. I lapped in the valves and new valve stem seals. That it on the head. Had it resurfaced. Cam is a bonafide 1987 Jeep N.O.S. out of the box with new lifters. The only thing I bought was a couple of odd gaskets. My buddy gave me everything else. Single roller stock timing chain. 91 efi and accesories from Wrangler, no A/C. Flywheel is late 70's Jeep with the big 10.9" disc and B&B pressure plate, again swapped for next to no cost. Trans is bone stock 82 AMC T5. Driveshaft is from a 77 Pinto wagon and is a bolt in! Stock AMC-15, 3:31 twingrip. All fluids are synthetic. No engine powered fan, electric 80's GM X
 -body fan, cools great, barely fits with its actual non pancake motor. 91 spec Wrangler P/S pump, 73 Hornet P/S box. Front tires, old Kelly Charger 205/60/15 Rear Tires, 255/60/15 (forget the brand) Exhaust is a 91 exh manifold, removed donut and created Y to 2.5" exhaust. O2 sensor in Y of exh manifold. 18" 2.5" glasspack by e-brake adjustment point and a 2.5" dynomax super turbo by fuel tank, all 2.5". Lowered 1 5/8" on front plates and rear blocks. I can't think of anything else that may relate to mpg. I have done multiple checks including with a gps an they all show the same 28+ highway and 24-26 mixed. mixed usually includes some "spirited" driving. > From: "Bruce" <bruce.griffis@xxxxxxxxx>
> To: "Rambler AMC, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
> Sent: Thursday, March 21, 2013 8:59:31 AM
> Subject: Re: [AMC-list] 4.0L mileage
> Thanks for the blog link!
> On 03/21/2013 08:49 AM, Dan Strohl wrote:
> > Good question; I'll see if the editor of Hemmings Muscle Machines
> > would
> > like an update on the project. I do post small updates to the
> > Hemmings
> > blog from time to time
> > (http://blog.hemmings.com/index.php/category/project-hmx/) but I
> > haven't
> > really done much with it since the fall, other than keep a battery
> > tender on it. Trying to sell my house right now, so all the fun
> > stuff
> > has been pushed to the backburner.
> >
> > dan
> >
> >
> > Date: Wed, 20 Mar 2013 15:45:39 -0400
> > From: Bruce <bruce.griffis@xxxxxxxxx>
> > To: "AMC, Rambler, Nash, Jeep and family"
> > <amc-list@xxxxxxxxxxxxxxxxx>
> > Subject: Re: [AMC-list] 4.0L mileage
> > Message-ID: <514A11E3.3060505@xxxxxxxxx>
> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> >
> > Dan - will we see your '79 AMX in a Hemmings issue? I love the AMC
> > content of the magazine, and especially love the daily drivers. Need
> > to
> > re-up my subscription. Been missing the Hemmings!
> >
> > On 03/20/2013 02:30 PM, Dan Strohl wrote:
> >> I get about 25 MPG +/- 2 or 3 from the 4.6-liter stroker in my '79
> > AMX.
> >> I'm still fiddling with the MAP sensor voltage, so there may be
> >> some
> >> improvement there. Of course, I'm driving it more for smiles than
> >> mileage, so I tend to be a little heavy with the right foot.
> >>
> >> dan
> > _______________________________________________
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