The experts over at Swindon Powertrain have unveiled a new cylinder head kit for Porsche 964 and 993-generation 911 models that will allow engine builders to make even more power from some of the carmaker’s finest air-cooled engines.
Swindon Powertrain has developed a 24-valve cylinder head kit for the 964 and 993 engines that rocks redesigned four-valve per-cylinder castings to unlock more horsepower and torque. In-house testing has revealed that peak flow has improved by 40% at the inlet and 60% at the exhaust. What’s more, Swindon’s cylinder head reduces weight by 3.5 kg (7.7 lbs) and allows applicable engines to rev all the way to 12,000 rpm.
Each cylinder head is cast from A356 grade aluminum and CNC-machined. The complete M64 kit includes titanium inlet and exhaust valves with springs, caps collets, shims, finger followers and shafts. It also features new camshafts, cam covers, and timing drive put. Should customers wish, Swindon also offers custom pistons, new inlet porting, and bespoke cam profiles.
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“Factory cylinder heads traditionally held back worthwhile gains for the traditional over square Porsche air-cooled flat-six engines,” Swindon Powertrain managing director Raphaël Caillé said. “Using the latest innovations in materials alongside CNC machining to F1 tolerance standards, our cylinder heads transform an air-cooled engine. The improved breathing and ability to rev, unleash the potential to experience your 911 like never before.”
The British company’s complete M64 cylinder head kit is priced from £29,950 ($36,413).
Swindon Powertrain was formed in 1971 and was originally tasked with maintaining Formula 1 engines used in the 1970s and early 1980s before expanding to other motorsport series. It currently supplies Hyundai with the engines it uses in its British Touring Car Championship team.
