Engine Tuning & Rebuilds
Complete engine overhauls from XK straight-sixes to modern V8s. Rebuilt to original spec or enhanced for better performance.
Built by Hand, Built to Last
There's something special about hearing a properly rebuilt Jaguar engine fire up for the first time. Whether it's an XK straight-six or a modern V8, every engine that comes through our workshop gets the same meticulous attention. Jestyn's been rebuilding engines since he was 19, when he built his first Mk2 unit under Tony Shaw's watchful eye. That's over three decades of experience going into every rebuild. We work to original specifications when authenticity matters, or we can enhance performance where you want more from your car. Every engine is built personally by Jestyn, ensuring the quality and precision that's made our reputation. We use exhaust systems made by Hayward and Scott, and offer gasflow porting and polishing for those looking to extract every bit of performance. Whether you're after a factory-fresh rebuild or something with a bit more punch, we'll get it right.
Services Included
Complete Engine Rebuilds
Full strip-down and inspection of every component. Blocks machined, bores honed, new bearings, gaskets, seals. Built back to original specifications or beyond, depending on what you're after.
Exhaust Systems
Custom exhaust systems made by Hayward and Scott. Properly designed and fitted to improve flow, sound, and performance while maintaining that classic character.
Gasflow Porting & Polishing
Precision head work to improve airflow and combustion efficiency. Porting and polishing cylinder heads can unlock significant power gains while maintaining reliability.
Performance Tuning
Carburettor setup, ignition timing, dyno tuning. We dial in your engine to run exactly as it should, whether that's smooth and refined or something a bit more spirited.
Personal Build Service
Every engine rebuilt at Thruxton is built personally by Jestyn Thomas. No assembly line, no shortcuts. Just decades of experience and a craftsman's approach to every build.