![]() This will add an adapter hose kit that cleanly routes the coolant to the radiator inlet. If you have an upright / stock-style radiator, with the inlet on top toward the middle of the radiator, choose the "upright" option. The big difference is the plumbing, though - the water coming from the turbo is now plumbed back into the water heading into the radiator so that it's cooled before going back into the engine.Ĭhoose the NA or NB kit according to the intake manifold that you're using - the only difference between the two kits is the hose bracket, which bolts to the intake manifold. First, we dropped the amount of flow into the turbo - they're cooled by the engine oil during operation, they really only need the water cooling when the engine is off and they use thermal siphoning to get it. To make things worse, this very hot coolant is mixed right back into the engine coolant, with no chance to cool down at all. We worked with the engineering department at Colorado Mesa University to map out all the cooling factors of the Miata engine, and discovered that a water-cooled turbocharger will increase the temperature of the coolant flowing through it by as much as the rest of the engine put together. So it's the best reroute you can buy already.īut the big difference is the turbocharger. And it includes a bracket to properly secure the upper radiator hose. There's a bleeder screw on the top of the housing so you're sure you don't have air bubbles. Even the thermostat is an off-the-shelf 195☏ unit so you can run a different temperature if you'd like (we sell a 180 ☏ unit but find it's not necessary for most and can cause check engine lights in some cars). The reroute housing is a single piece to avoid leaks. It's fully electrically conductive so your temperature sensors read properly, and it has a spot for an aftermarket sensor. It's completely compatible with EGR pipes - not "it works if you hit it with a hammer" compatible, but done right. It puts the thermostat right into the head where it belongs so it reacts quickly. We even tested flow through the heater so you'll stay warm. Our flow area is 8% better than stock, 11% better than the first reroute we sold and 5% better than our previous offering. We went through multiple designs testing the flow to make sure this is actually true. This one has been designed and tested for maximum flow. We've been selling reroutes for years, and they've been gradually getting better. Moving the thermostat to the back of the engine where it's supposed to be solves these problems. This means that a large portion of the coolant never goes through the back half of the engine, leading to poor overall heat transfer and problems with the #4 cylinder running hot. The best coolant reroute on the market - and the only one that is truly compatible with a turbocharger.įirst - why do you want a coolant reroute? Because when Mazda went to put the B-series engine in the Miata, they decided to put the thermostat on the front of the engine for packaging reasons.
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