Quote:
Originally Posted by momorris
I currently run a partial grill block but the engine temp sits at 75.
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That is low-ish. My turbodiesel (1.6 HDi) would hardly ever get above 78°C without grille blocks. With both grilles blocked the coolant gets warmed up much faster, stays 78-80°C, and keeps a higher temp for longer (eg after traffic or hill climbing), but my driving has become so efficient that the coolant temp drops back down. At outdoor temps below -10°C the engine gets cold if I turn on the heater, even though the I've put insulation on the engine.
As for higher temps you should be OK. Diesels like to run hot, my idle fuel consumption is 0.48-0.52 liters per hour @90°C, compared to 0.52-0.56 l/h @ 78°C.
Quote:
Originally Posted by momorris
If a diesel does run more economically when warmer what would be the best way of getting it warmer. I think ill chexk with peugeot to see if they have a higher temp thermostat as well.
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I have thought about this, but I'm not sure if PSA has a hotter t-stat that is interchangeable. You might be able to DIY a swap (like this:
Modified Thermostat for higher MPG's...) if you can find a hotter t-stat that will fit. My engine's t-stat is inside of a plastic housing with the temp gauge and I'm not sure if it can be opened
Quote:
Originally Posted by momorris
So far I have chipped it for economy and my last run saw 66 (uk) mpg compared to 58-60 ish normal.
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Can you give more details? Here is a thread:
Eco remapping aka chiptuning
Quote:
Originally Posted by tjts1
Get a colder thermostat than stock. Diesels are more efficient running cold. You just want enough heat for ignition. Colder intake air will be denser and cause a leaner mixture for a given amount of fuel.
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That's the first time I've read that a diesel likes to be cold! What I've always come across is that diesels like to be hot, but with cold air intakes. Both for efficiency and performance.