Cylinder Head Replacement

Cylinder head replacement for cracked or badly warped heads, diagnosed on site so the decision is based on measurement.

Book Your
Car Service

icon-whatsapp

Pricing

Pricing varies based on your vehicle

Get a Quote

Service Info

Typical Duration 10 hours

We establish whether the head is warped within skimmable limits or genuinely cracked, address the cause of the overheating, fit the head with a new gasket and new torque to yield bolts, verify timing by hand, then refill with fresh oil and coolant.

Skip the garage, our master mechanics come to you

At your home or office
Fair & transparent pricing
6-month, 6000km warranty

The Most Trusted Cylinder Head Replacement

The cylinder head carries the valves, camshafts and combustion chambers, and it is the part that suffers most when an engine overheats. Aluminium warps, and in bad cases cracks, usually between the valve seats or into a coolant passage. A cracked head cannot be sealed by any gasket, which is why the head must be measured rather than assumed serviceable. Michanic diagnoses cylinder head damage on site and arranges the replacement.

Why Choose Our Cylinder Head Replacement Services?

  1. Measurement Decides:
    Heads are checked for flatness and pressure tested for cracks. Skimming is often enough, and that is a far smaller job than replacement.
  2. Cause Addressed:
    A head does not warp on its own. The overheating cause is found, or the replacement suffers the same fate.
  3. Valves and Seats Assessed:
    A head with burnt valves or worn guides needs work beyond fitting it, and that is established before it goes on.
  4. Honest Economics:
    On many vehicles this approaches the value of the car. You are told that before committing rather than after.

Why We are the Best Choice for Cylinder Head Replacement

  • Skim Versus Replace:
    A warped head within limits can be skimmed. Only cracks, excessive warp or damaged seats require a replacement head.
  • New Bolts and Gasket:
    Torque to yield head bolts are single use. Reusing them is a frequent cause of a repeat gasket failure.
  • Timing Set Correctly:
    Camshaft timing is verified by hand through full cycles before the engine is cranked.
  • Cooling System Renewed:
    Thermostat, pump and radiator are addressed, since the overheating that damaged the head usually started with one of them.

A cylinder head is damaged by heat, and heat damage is progressive. A head that has warped slightly will blow gaskets repeatedly until it is skimmed flat, and each of those failures costs another gasket job. A head that has cracked into a coolant passage lets coolant into a cylinder no matter what gasket is used, which washes the bore and can hydraulically lock the engine. The decision between skimming and replacing is therefore made on measured evidence, because guessing in either direction is expensive.

Frequently Asked Questions

  • Can a cylinder head be skimmed instead of replaced?
    Frequently yes, and it is much cheaper. If the warp is within the manufacturer limit and there are no cracks, skimming restores a flat sealing surface. Cracks or excessive warp require replacement.
  • How do you know if a head is cracked?
    It is pressure tested, usually after cleaning, which reveals cracks that are invisible to the eye. Repeated gasket failures or coolant entering a cylinder after a gasket replacement also point strongly toward a crack.
  • What causes a cylinder head to warp?
    Overheating, essentially always. Aluminium expands considerably with heat, and when an engine runs hot the head distorts. The severity depends on how hot it got and how long it was driven in that state.
  • Is a replacement head new or reconditioned?
    Both are options. A properly reconditioned head from a reputable machine shop, with new valve stem seals and refaced seats, is a sound choice and usually far better value than new.
  • Is it worth replacing the head on an older car?
    Often it is marginal, and you will get an honest assessment. It is a major job, and on a high mileage vehicle the total cost can approach what the car is worth, which is a decision that belongs to you.