David in Australia with Renault Scenic
Hello guys,
I have a Renault Scenic which is not so economical. More of a track car really and a Celica GT-Four. The Scenic was meant to be an around town 'slow' car. Then the engine blew and I upgraded it to a RenaultSport engine and it now goes as well as a lot of Turbo cars. That's ridiculous but true. Last week I got back from Japan and they are into Toyota Prius. omg, such bodykits and extra things they add to them there. I guess that made me remember about this site. |
Is that a 1st generation or 2nd generation Scenic? And what was its stock engine?
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The new and current engine is a RenaultSport Clio-172 130Kw engine, pretty much stock It's plenty powerful. Definitely the opposite of eco-modding at the moment. I've got eco-modding plans for it, but we'll see how it goes. In the past I Water-Injected my L300 Mitsubishi van and got substantial (~33%) fuel economy improvements. But that was carby not efi. |
I got to five posts so now I can share a picture:
http://ar5boosted.com/users/david/DSC_0077.JPG My Scenic is the big car at the front. The ones behind had trouble keeping up - lol. |
Welcome to the site.
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I had an electric water pump and a switch. I'd pump water into the carby with a spray module. It was calibrated to work best at 1100 rpm which was low speed driving. https://plus.google.com/+DavidLyon/posts/jFrdmiMZexL Due to the increased torque I could drive in the next higher gear. I found that I could run 50% water by volume and that would give 30% fuel saving going from 14L/100km down to 9L/100km. It also got a lot more power so the life of the vehicle was extended by an extra 10 years over what it was designed for. A closeup on the next car: https://plus.google.com/+DavidLyon/posts/3DKGmaFEPvN It was great to own and drive. I didn't have a good enough system for it to be saleable but it suited what I needed it for. |
I haven't seen so many complaints against the K-series engines in general. But anyway, by now it's been mostly replaced by that Nissan QG engine.
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Belated welcome!
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http://www.performancemag.net/news-images/585/eco03.jpg but the bodykits that are available for them in Japan make them look so fast. |
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It was just disappointing when I didn't get a big improvement in fuel economy from the water-injection and then sometime later the car got crashed. I discovered that pre-heating the water made a big difference. Water viscosity is very important. I got the car from around 400km/tank to 650km/tank (40l) so I was somewhat happy but nothing that would really impress anyone on this forum much. If there was an open source fuel-economy ECU project that anyone knew of I'd be interested in hearing about it. I think I'm getting ready for a fuel-injector remap computer because I suspect that there are a few deficiencies with the logic in most ECU's especially in relationship to thermal management. I'm setting about to rear-mount turbo-charge this car. We'll see what happens then. |
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My take on this is that the colder the water the more heat that it will need to absorb. The downside of colder water is that it is 'harder' or denser. So I'm convinced that it led to blowing a head-gasket. Probably because there was too much water going in one particular cylinder. Sometimes what goes on in an engine is mysterious. Quote:
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Picture: (Garrett was installed this week) http://ar5boosted.com/users/david/DSC_0278.JPG |
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