This Porsche 993 Got A Honda Engine After A $35,000 Repair Quote
An Unlikely Porsche Heart
The Honda K-series engine is one of the most popular choices among car builders for several reasons, including Honda's reputation for reliability, its relatively affordable cost, and the extensive aftermarket support. While K-swaps are most commonly associated with JDM models, the engine has also become a go-to choice for ambitious projects. One example is this build by TF-Works, which swaps a Honda K24 into a Porsche.
More specifically, the project is based on a Porsche 993 Carrera 4S (all-wheel drive), one of the final air-cooled 911 variants before the 996 introduced water cooling. As such, the tuner had to develop a custom cooling setup for the Honda K24, especially given its rear-mounted placement.
A Second Chance For A 911
The Honda K-swap was green-lit after the owner was quoted around $25,000 to $35,000 to repair the blown supercharged air-cooled flat-six. A General Motors LS swap could have also been a cost-effective and unique option, but its size may have created packaging issues in the rear engine bay of the 911.
TF-Works installed a stock-internal Honda K24 paired with a Precision Gen2 5862 turbocharger, the factory Porsche 6-speed manual transaxle, and a Link Fury X ECU. During hub dyno testing, the setup produced 475 horsepower on an E40 fuel blend at 15 psi of boost. However, the owner opted to limit output to around 400 horsepower to prioritize long-term reliability over maximum performance.
That likely would not be possible without an intercooler, which helps keep intake air cool for more consistent power output. The build also features several custom components, including TF-Works billet mounts, a carbon intake manifold with a throttle-body adapter, a custom exhaust manifold, and a modified oil pan. Many of the fuel system components are said to be stock, though it does use an upgraded fuel pump, the tuner's fuel rail, and Injector Dynamics 1000 cc injectors.
Saving A 911 The Honda Way
During the test drive, the team noted "buzzing" around 4,000 rpm, though they still considered the car smooth for a K-series-powered build. It also produced a sound not commonly associated with Porsches, thanks to the TurboSmart wastegate and blow-off valve.
Not every Porsche purist may appreciate this K-swap build, but it goes to show that the aftermarket offers plenty of alternatives for keeping a beloved car on the road.
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This story was originally published June 14, 2026 at 5:00 AM.