Hydrodiesel: Turning max fuel down for better economy?

[R.O.R-2.0]

Hi All-
Lot's of comments and I appreciate them all.

When i say dial back the pump I mean setting TDC on the tranny bellhousing mark, setting up the dial meter on the back of the pump, rotating the engine backwards until the needle on the dial stops moving, zeroing the meter and rotating the engine forward back to TDC and reading the gauge. It was at 36, because I have an inches meter. I rotated the pump to 33 which I thought was retarding the timing, but am sure that's the direction you go for better economy.

The reason I'm putting it in after the turbo is because that's what was recommended by the guy I got the unit from, who said some other guy in Greece did it that way with his 1.6TD and got 60% increase in mileage. Seemed counter intuitive to me but I figured it would be a good place to start. I expected that if the Hydro-Boost was working well, it might cause the car to actually lag comparitively when the turbo kicked in.

I've set up a small metered tank for the tests, and I'll do several both with the Hydo-Boost on and with it off, using the same can of fuel I get from the local Biodiesel store. I might not ordinarily use biodiesel because of some of the pics I've seen of the insides of pumps, but it came as a biodiesel car, and there's a station here in town that sells professionally made BD99.

I'll be doing some tests next week after I work out a few things. If it doesn't work this way, I'll try it pre turbo, if that doesn't work then I'll try it on my 1.6 na caddy, if that doesn't work, well, I guess I'll know it doesn't work.

Thanks again for all your input.

no, you dont get better economy when you retard your timing.. the fuel is not in the cylinder for as long, so not as much of it burns..

this is not a gas engine, remember that..

slightly advanced from the stock spec is where the best power and economy will be found..

[mappley]

Sorry for the lack of updates- Busy busy.
I've been working out some belt problems and troubleshooting the Hydro system. So far it hasn't been working. Next step is to measure the Hydro output to confirm I'm getting enough. I'll let you know. Good news is i'm getting around 45 mpg.
Mike

[Baron VonZeppelin]

45 mpg overall with 1.6 TD, is pretty excellent.

Especially if you cruise highway at speeds over 60 mph.

[81 vw pu]

Sorry for the lack of updates- Busy busy.
I've been working out some belt problems and troubleshooting the Hydro system. So far it hasn't been working. Next step is to measure the Hydro output to confirm I'm getting enough. I'll let you know. Good news is i'm getting around 45 mpg.
Mike

I played around with a hydrogen generator a couple years ago, and the way I measured the output was to take a 1 liter pop bottle and fill with water then turn upside down in a large container of water,then stick the hose in the bottle and time how long it takes to displace the water in the bottle with hydrogen.