Cylinder head crack test
Channel: ClassicsMonthly
Date: 09/07/2014

From our cylinder head Masterclass feature in issue 219. The cylinder head is a cast iron head for Triumph TR4. These heads are prone to heat stress cracks but they can be repaired as proven in our feature. Here, the head is pressurised to 20psi or more and submerged in a heated tank of water at 75C. All engineering done by Hurley Engine Services, Bath, Somerset.