Carburetor Mod To Decrease Fuel Consumption

Modifications to any other vehicles or things which can benefit any of the other vehicles owners.
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pampoen
LR 4WD Full Lockers
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Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Tue Apr 03, 2018 7:30 pm

So the guys still driving the old Hiluxes with the old 22r and 4y motors will appreciate this mod the most.

A while back I found this website. eagle-research.com I am not affiliated in any way here, I was simply looking for a way to get better fuel economy, turns out I found the cheapest way to 8km/l for a 22r, an improvement from 5.5km/l Total cost R5.00.

Basically the idea is that you pressurize your float bowl so that the carburetor is balanced, it essentially enhances the emulsification of the fuel among other things without you changing anything. Installation is simple with all the requirements being some fuel hose, a vacuum source and a tap to decrease or increase vacuum, you attach on side of the hose to a vacuum source (in my case I installed it on one of the many vacuum ports I had available on the carb itself and attached the other to the vent tube on top of the float bowl with the tap in between. Too much vacuum kills the engine, to little wont work, once you've turned the tap till a little way before it dies you have it tuned. That's it.
Image

If you guys have any questions or would like to even have a look at the book this guy sells on his website I would be willing to share.Good info like this is priceless.
With each replacement of parts, a car slowly becomes Chinese.
Mars
LR4WD, Lockers, Crawler Gears
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Vehicle: Toyota Hilux Dakar 2.8 GD-6 DC 4X4
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Wed Apr 04, 2018 6:52 am

What are your actual results?
dax021
High Range 4WD
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Town: Wittedrift
Vehicle: 1990 Hilux
Real Name: Peter

Wed Apr 04, 2018 5:06 pm

Does it actually work? I would love a copy of the book, thanks
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pampoen
LR 4WD Full Lockers
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Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Wed Apr 04, 2018 9:16 pm

Well since I installed this little mod I have seen an increase of 2.2km per litre over and above my current fuel economy, instead of 5.5 I am getting 8km/l. I have a gas flowed head with a branches and free-flow exhaust, I am not sure if these contribute to the engines fuel economy. Also the engine feels smoother and slightly more powerful.

And to be honest here my records are over 2 tanks of fuel driven between Gordons Bay and Paarl 60% town and 40% open road with 500kg of guys and gear in the back. I drive mid throttle not pushing more then 130km/h on the down hills.

DAX send me your email and I'll send you the PDF. :thumbup: It really would be great to get a few guys experimenting with this, if we can help even a few guys get more km/l then that's awesome.
With each replacement of parts, a car slowly becomes Chinese.
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Tim86
Low Range 4WD
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Joined: Tue Apr 12, 2016 10:33 pm
Town: Cape Town
Vehicle: Hilux
Real Name: Tim

Thu Apr 05, 2018 6:41 am

I have a carbed 22r so would love to give it a go sometime - don't see how it can do much harm. Can I send you my address as well Pampoen?
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pampoen
LR 4WD Full Lockers
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Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Thu Apr 05, 2018 9:52 am

Please do Tim, just PM me your email.
With each replacement of parts, a car slowly becomes Chinese.
dd6
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Fri Apr 06, 2018 10:50 am

Luke, may I please have a copy?
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pampoen
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Fri Apr 06, 2018 11:30 am

Guys of you want me to send you the PDF book, just pm me your email address.
With each replacement of parts, a car slowly becomes Chinese.
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Tim86
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Real Name: Tim

Fri Apr 06, 2018 3:05 pm

Thanks for the copy Luke!
Would you mind posting a close-up pick of your setup when time permits? I'm interested to see which vacuum port you used - I'm thinking of the unused AC port as mine has no AC..
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pampoen
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Sun Apr 08, 2018 2:49 pm

Sorry about the wait. Here are the pics.I used a fish tank air restrictor as the valve for the system.
https://ibb.co/eOLFZx
https://ibb.co/gh2Uux
https://ibb.co/ddUaZx
With each replacement of parts, a car slowly becomes Chinese.
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pampoen
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Tue Apr 10, 2018 6:21 pm

Guys just a little more info on tuning the carburetor enhancer, once you have all the stuff on the carb start the engine with the tap fully closed, slowly open it until the engine wants to die, back it off slightly until the engine runs smoothly again. Take the vehicle for a spirited drive around the neighborhood, especially one with lots of stop streets, if the engine dies after braking hard then close the tap slightly until it does not die. After that you should be good. Your carb enhancer should be doing saving you petrol.
With each replacement of parts, a car slowly becomes Chinese.
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Tim86
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Vehicle: Hilux
Real Name: Tim

Wed May 02, 2018 11:07 am

Any update on your consumption Luke? Still performing well? Have bought the components but haven't got round to it yet, alternator packed up the other day:/
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pampoen
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 564
Joined: Thu Jan 24, 2008 10:31 pm
Town: Gordons Bay
Vehicle: 1997 Toyota Hilux 4x4 DC 22R, OME Suspension
Real Name: Luke

Wed May 02, 2018 1:25 pm

Yes it seems to be giving me better fuel consumption. On a 65 litre tank I got 500km with 5 people in the car and 300kg of stuff in the back. That is IF...... and a big if, I drive nicely. So not a massive increase but still much better then the 5.5km/l I was getting.
With each replacement of parts, a car slowly becomes Chinese.
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