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MZR-ből lett Duratec és nem fordítva. A Mazda fejlesztette a motort, de hogy olcsóbb legyen a fejlesztés, megosztották a Forddal is.
The Ford Motor Company owns rights to build and use the MZR generation of engines under their Duratec brand name for global service in its vehicles since 2003.
As of 2011, Mazda discontinued development of the MZR generation of engines to be replaced by their new SkyActiv generation of engines. Some early 2012 Mazda cars are equipped with the 2.0 MZR engines as an option as well. Ford continues to develop and manufacture variants of the Z-engine and L-engine for their Duratec and EcoBoost four-cylinder engines. The third generation MX-5 was still produced with the MZR 1.8 or 2.0 engine, which may be shipped from the factory with a Ford Motor Company oil filter fitted, suggesting a shared production line.
It was agreed many years ago, that Mazda would drop their (class leading) K-series V6, hand over the engineering to Ford and Ford would continue to develop 60 degree aluminum V6's as their Duratec V6, which Mazda would have later access to to cast, build and modify to their liking. In exchange, Mazda would be responsible for the entire development of the "new four cylinder engines". This is the deal according to Ford. Mazda would be developing a new 4 cylinder engine, regardless. Selling the K-engine out, made and saved them some money. The company has always had some of the best engineering in Japan, but sadly most of it falls short of production (including V8 and V12 engines). Ford always knew this, which is why they hooked up with the company since the 70s. "MZR" is just a brand name, just like 'Duratec' (and EcoBoost for that matter). It means nothing. The Mazda L-engine is the engine family in question, and is all 100% Mazda engineering. The L-engine, is part of the MZR series (which is a brand name for a generation of engines, including the smaller Z-engines as well). The L-engines range in size from 1.8L to 2.5L.
So now with a little bit of history, in the early 2000's it was published that Ford had indeed trusted Mazda for a new global 4cylinder for Ford to use. (Mazda's own engines have always been their "global" engine, so no need to change anything on their end). Ford attempted a DOHC 4 cylinder with their ZETEC, being loosely based on Mazda's 1.8L BP, but that engine was short lived. The F-engine was produced from 1983 to the mid-late 90's, where Mazda replaced it with an odd FS/FP 2.0L/1.8L for the Protege generation (was more like a stretched out BP, than close to anything of the real F-engine family). That engine was produced for about ~5yrs, before they went back to a large bore spacing engine like the L- & F-.
"But there are parts on the Mazda and Ford engines that says FoMoCo on it, so you're lying"
Indeed there are, but I'm not even close to lying. This is where the OEM agreements take place. Mazda accepted Ford's offer of helping them save some money on the bread and butter parts like plugs, throttle bodies, dipsticks- you know the [censored] little costs on the little knick knack details. Ford offered these everso discreetly labelled items, you know, as part of an exchange for being able to cast a Mazda engine and use it in over half of their entire lineup. That seems a little more than fair. But, Ford also knows the psychology value in that as well. But I digress. Now, I realise this is far more info than anyone could have cared for, but I think the story is very good start to at least know the heritage. There is far too much speculation and rough estimates out there, even from journalists in internet's world that people are stating as fact.
MX-5 KLUB - elnök NA 1.6 1992
