Introducing the QMAX SYSTEM

When Madza converted their B-series engine to fit in the Miata, they made a few compromises in order to re-orient the engine from it's original transverse configuration into it's new, longitudinal home.

One of their biggest changes involved the cooling system: instead of routing the cooling water in through the water pump, across the engine, and out through the opposite end of the cylinder head, (as it should be) they saved themselves some plumbing headaches by taking the water back out through the front of the engine. In this installation, only a small portion of the cooling water flow goes around the 4th cylinder so it runs hotter that the rest of the engine. In a stock, street-going Miata, this system is perfectly adequate. As soon as you hit the track, add power, or both, this becomes a big problem. In testing, we have found a 20-degree F difference in coolant temperature between the front and rear cylinders: on a highly-stressed, forced-inuction engine, this can be a recipie for disaster.

What the Qmax system does is return the coolant flow path back to the original way Mazda engineers intended it to be when they first laid pen to paper. In addition, Qmax retains all the correctly-functioning parts of the original system, including proper sensor locations for correct engine control, heater, and bypass circuit operation for proper warm-up and cold over-pressure protection.

Current shipping estimate for production kits is Feburary 2008. Send us an email to be put on the mailing list for updates and ordering information.