What is the difference between rx7 and rx8

The Renesis engine, locating that exhaust exit within the plate, requires the exhaust gas to turn to get out of the engine, a more difficult path. The Renesis engine is basically choking itself, apparently in the name of emissions compliance. A later engine indeed. Between the bad exhaust routing and the poor housing build quality, you would need very good seals to keep everything clean and separate inside the rotary engine itself. As Engineering Explained noted in his old rotary engine shortcomings video, the rotary engine needs good seals as one half of the engine is always heating up after combustion in relation to the other half expelling exhaust and intaking air.

They are lighter so they work better at high RPM, but they pose big reliability problems. The problems with the skinny apex seals and poor housing build quality are doubly true when forced induction joins the fray.

Boost a Renesis rotary and everything that went wrong even when naturally aspirated gets exacerbated. The FC RX7 came with a 1. The later Turbo II model had an updated turbocharger design and air-to-air intercooler and made hp. The smaller one spooled quickly, to boost low-RPM torque. The larger one came in later to boost power. All told, the FD put out hp. This meant the 13B was in many ways overbuilt and could be reliably tuned for even more power.

And, because this car starred in Initial D and Fast and Furious , many were. But despite its hp naturally-aspirated 1. But the biggest issue was with the apex seals. For one, as with every rotary engine, the 13B is noticeably less fuel-efficient than a piston engine. Turbocharging the 13B like that generated so much heat, the catalytic converter could actually melt, The Straight Pipes report.

Driving Tips. Maintenance Tips. Car Review. Car Comparison. Industry knowledge. Read Here! By John Kelly. Last updated Jan 07, Let us compare these luxury cars according to their traits and features below. Let us bring those differences into the spotlight here: 1. Facts about speed and acceleration for mazda rx8 vs rx7 2. Curb Weight The weight of an automobile plays an imperative role while making car comparison. Facts and Fallacies!