Welcome to Welham Group
Good old fashioned engineering since 1947
Welhams started in business just after the end of the second world war and we have always been proud of our engine reconditioning skills.
We can rebore cylinder blocks, recondition heads and regrind crankshafts as well as complete engine rebuilds.
We are members of the Federation of Engine Re-Manufacturers which ensures that all our work is carried out to a high professional standard.
Our Services
In addition to the work we do on the vintage diesel side, we offer the same services for common rail pumps and injectors all the way up to Euro6 standards.
Welham Diesel, established in 1964 as an offshoot of Welham Motor Company, specialises in servicing and refurbishing fuel pumps and injectors for agricultural machinery.
Despite their age, our crankshaft regrinding machines are still regarded as some of the best.
News & Case Studies

Celebrating 2025: Reconditioned Injection Pumps & Vintage Vehicles
As 2025 comes to a close, we’re taking a moment to celebrate a year full of vintage machinery, passionate enthusiasts, and, of course, the injection

Welham Group: 2025 Year in Review
2025 has been an incredible year for Welham Group, filled with events, community initiatives, and plenty of opportunities to share our passion for vintage machinery.

Track Marshall 55: The Iconic British Crawler Tractor
If you’re a fan of vintage agricultural machinery, the Track Marshall 55 is one classic that commands attention. Known for its rugged durability and pioneering
Our knowledge has been passed down the generations of skilled technicians here at Welhams
Proud members of