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Mileage Issues

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Offline takai

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Mileage Issues
« on: January 13, 2006, 05:33:03 PM »
Trying to figure out a mileage issue. A while ago my friend put a new motor in his 87 Sammy. Stock tires, tranny, and T-case. The motor is a 1.6 8-valve bottom end, a 1.3 head w/ a phase one torquer cam. He is running a Weber 32/32 and a custom 1-3/4 exhaust. He gets 15 mpg at the best. The company that put it together for him told him he should be getting 23-25 mpg. If this is a true possibility, I can't figure out why he can't get better mileage.

Any ideas?
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87 Sammi "Sir Tweak " Rockcrawler 4:1, Mighty Kong , 1.6 16V, Centerforce II, 2" Exhaust, Esteem seats. - Long gone
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Offline mrfuelish

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Re: Mileage Issues
« Reply #1 on: January 13, 2006, 06:19:02 PM »
Bad gas,chemicals are now cheaper than gas so you will see alot of additives in gas from now on. ::)
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1987,1988,1988,1990 samurai's,  1953 m38a1,  1996 x-90,blue.1996 x-90 red.1994 2 door tracker.   only Dead Fish go with the flow.                No Hairy Nosed Wombats were ran over on the trail today.       My ZUK is Xenophobic.
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Offline takai

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Re: Mileage Issues
« Reply #2 on: January 13, 2006, 06:46:05 PM »
I could buy that every once in a while. This is an ongoing several months kind of thing. My tired old 1.3 with a 32/36, leaky exhaust, and bleeding front main and 4:1 t-case still manages to get 17 (19 on a really good day with the wind pushing me  ;D ).
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87 Sammi "Sir Tweak " Rockcrawler 4:1, Mighty Kong , 1.6 16V, Centerforce II, 2" Exhaust, Esteem seats. - Long gone
97 Tracker "Jezebel"  Bone Stock DD

'Cause, I am to misbehave.
*

Offline mrfuelish

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Re: Mileage Issues
« Reply #3 on: January 13, 2006, 07:27:28 PM »
ya I get my fuel from the same place you do, Eugene,oregon     when I went to boise,id this last summer I got 23 mpg and when I filled up in burns (they get there gas from sparks,nv) I got 32 mpg, and this last december I went to l.a. and rented a car that has those mpg computers and when I filled up with california gas it got better mileage, go figure. ::)
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1987,1988,1988,1990 samurai's,  1953 m38a1,  1996 x-90,blue.1996 x-90 red.1994 2 door tracker.   only Dead Fish go with the flow.                No Hairy Nosed Wombats were ran over on the trail today.       My ZUK is Xenophobic.
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Offline takai

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Re: Mileage Issues
« Reply #4 on: January 13, 2006, 09:31:39 PM »
Just doesn't explain why my motor (the bad one) gets better mileage than his (the good one).  I have to replace mine very soon. I was thinking about a 16-valve or the same engine he has. I can't have that kind of mileage though. Not a be able to afford to get to and from work.
Logged
87 Sammi "Sir Tweak " Rockcrawler 4:1, Mighty Kong , 1.6 16V, Centerforce II, 2" Exhaust, Esteem seats. - Long gone
97 Tracker "Jezebel"  Bone Stock DD

'Cause, I am to misbehave.
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Offline karl214

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Re: Mileage Issues
« Reply #5 on: January 14, 2006, 07:45:26 AM »
I pull around 30 MPG with a bone stock TRACKER... 1.6 / 8 valve, with a 5 speed... Thats with the front axels locked in too.... ;D
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Offline wildgoody

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Re: Mileage Issues
« Reply #6 on: January 14, 2006, 09:24:22 AM »
Carb not adjusted right, running rich can
easily burn you to 15 MPG, Just a thought
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Real Trucks Are Built, Not Bought,
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An armed man is a citizen. An unarmed man is a subject.
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Offline takai

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Re: Mileage Issues
« Reply #7 on: January 14, 2006, 01:41:30 PM »
Wild,

That's were I thought the problem was to but, it seems to be right the only issue I can find is not being able to get the idle to drop down. Consistently. Could this be an issue with the water choke?
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87 Sammi "Sir Tweak " Rockcrawler 4:1, Mighty Kong , 1.6 16V, Centerforce II, 2" Exhaust, Esteem seats. - Long gone
97 Tracker "Jezebel"  Bone Stock DD

'Cause, I am to misbehave.
*

Offline wildgoody

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Re: Mileage Issues
« Reply #8 on: January 14, 2006, 04:16:46 PM »
Yes, if you have a water heated choke
system, instead of electric, and actually
even if it is electric, if the choke is not
adjusted so the flap is all the way open
when the trucklet is warmed up, you are
going to burn lots more gas.

You don't notice this as bad at idle, not
much air is needed to idle, but get it out on
the road, open that throttle up and you start
to suck hard on the main jets, and eating a
bunch more gas than needed.

You need to get the trucklet all warmed up,
remove the air filter top, and look and see if
the choke flap is all the way open, you should
see none of the sides as you look in, only the
thin edge. If not you need to turn the spring
that gets warm and moves the choke flap until
it is all the way open.


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Real Trucks Are Built, Not Bought,
And Chrome Don't Get Ya Home.  

An armed man is a citizen. An unarmed man is a subject.
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