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Originally Posted by iveco
Finally i have purchased my first "car" a Long wheel base, high top, Iveco Daily mk3 (35s13v) 2.8TD van from 2000! If you were to design the worst aerodynamic frontal area possible, you would design this van!
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An interesting choice for a first "car" to say the least. On a sidenote I also tend to prefer vans.
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My plans might be a little bit different from other builds as I am trying to improve the efficiency both as a vehicle and a home. for example using coolant to heat hot water when engine temperature is high.
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What about using recovering exhaust heat for hot water?
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Running on vegetable oil - i will be running on used vegetable oil using a two tank system.
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That sounds nice. I am favorable to vegetable oil usage as a motor fuel too. BTW would you eventually also consider trying water injection? Assuming you might be able to use the residual water released by an air conditioner, seems like a good option to improve fuel savings while it also decreases the NOx emissions, at a relatively low overall cost.
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alternator delete - power from 48v house battery with DC-DC step down
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I usually take a full alternator delete with a grain of salt. Have you never considered fitting your van with a starter-generator? It may provide auxiliary power under certain conditions, while under others it may also improve the engine-braking which is quite critical on Diesels.
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air conditioning delete - possibly install 48v electric motor on compressor to use as AC for the home
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It's not so hard to find commercially-available electric rooftop air conditioners usually meant for trucks, either 12-volt or 24-volt. Not sure how easy it might be for you to find a 48-volt compressor there though, but since it would require a lower amp than either 12-volt or 24-volt it may be a good idea. And now with so many cars resorting to the 48-volt mild-hybrid setup, in a few years it might increase the availability in junkyards
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Total belly pan - maybe it will also help protect against corrosion?
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Not sure if a belly pan would really have any benefit regarding corrosion protection. Probably if it doesn't get any drain plug, if moisture accumulates between it and the stock floorpan it may become a matter of concern. Maybe coating the underbody for some added rustproofing before you fit the belly pan might also be worth.
An electric radiator fan is usually great on a Diesel, and since you plan to use vegetable oil as a fuel this may allow you to switch from regular Diesel to the vegetable oil quicker.