Part of our daily work sees us also doing a large amount of cylinder head repairs, especially where a combustion chamber has been completely destroyed. In the case of cam belt & or valve damaged heads, we reconstruct the combustion chamber and all relevant areas to as close as what it was. This is an extremely slow and time-consuming process that requires a huge amount of care and concentration and is not always successful.
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YEARS OF EXPERIENCE AND EXCELLENCE!
Cylinder Head Repairs – Cambelt & Valve Damage
SPECIALISING IN ENGINE CYLINDER HEAD REPAIRS
To Repair or Not to Repair?
To really illustrate this point, we have attached the text that always goes with a cylinder head that we have repaired at a customer’s request:
Need an Audi – Volvo – BMW – Ford – Mazda – Noble – Nissan – VW Cylinder Head Repaired?
Broken Cam Belt or Valve / Damage Repaired Heads
(Advice – Notice to the Engine Builder / Mechanic)
You have requested that this cylinder head to be repaired and SAC Engineering has done exactly this. It is normally far more expensive to replace the damaged cylinder head with a new one. Repairing this damage is the economical route and while it is only one of the options available, you need to know the risks that go with this choice.
Note that applies to all welded cylinder heads
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Cambelt and or Valve Damaged and or Cracked Cylinder Heads –Cylinder Head Welding & Skimming
More often than not together with cambelt and or valve damaged heads we also have a lot of heads that have damage caused by overheating in one way or another. This damage is usually in the form of a crack or multiple cracks in various places on the cylinder head. Mostly, however, these cracks occur when the material is hot and a lesser temperature coolant arrives at the hot area. Mostly we are able to repair a cracked cylinder head. This is detected by way of a pressure test. Once again the head is heated up and between 5 & 10 bars of pressure is applied to the coolant area of the cylinder head, if there is a crack evident it is made visible by very small bubbles in the water that is used for this testing. Crack detecting is not only done with pressure testing we also utilise some state of the art crack detecting spray procedures that show a crack when the spray is applied, when air or moisture is evident in an area. We also do various types of welding on cylinder heads, mostly metal filling and stitch type welding whether iron or aluminium. Another commonly used cylinder head repair process involves the drilling & pinning of a crack. This process can only be used in rare applications. Cylinder heads in modern motor vehicles will get cambelt & or valve damage which is normally related to cambelt failure and or incorrect valve timing. If a valve comes into contact with a piston for whatever reason, this normally results in the head breaking off the valve and or being caught between the piston and the combustion chamber and because the piston is travelling at very high speeds extensive damage is eminent.
Once a cylinder head has been welded or repaired it is standard practice to skim the cylinder head gasket surface. The skimming process usually only removes a very small amount of material which is caused either by welding or slight pulling of a cylinder head. This means that the gasket surface is no longer true or straight and needs to be skimmed or restored to its original shape.
Over the years, we have repaired many cambelts and or valve damaged and or cracked cylinder heads on a wide variety of vehicles including Audi – BMW – Ford – Mazda – Noble – Nissan – Toyota – VW (Volkswagen).
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GAS FLOWING, BIG VALVE CONVERSION AND RACE HEADS
In the early years, modified or gas-flowed big valve cylinder heads were only ever found on racing cars. Today this situation has changed dramatically, custom cylinder heads have become very popular, not only in street cars but also in the highly competitive motorsport arena. And here once again the SAC Engineering specialists can provide you with the full platform of specialised services to not only make your street car or bakkie better but also give you the competitive edge to be number one.
Our cylinder head experts will turn your standard cylinder head into a fully bred racing head. We make them from mild to wild depending on your requirements. We will never compromise reliability.
NEW CYLINDER HEADS
SAC Engineering carry a large variety of new quality aftermarket replacement cylinder heads for petrol and diesel Car’s, SUV’s and Bakkie’s.
Our new cylinder heads are the best alternative available to the original equipment – OEM – part on your vehicle and are sold at very competitive prices.
Click here to get an SAC Engineering consultant to advise you!
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USED & REFURBISHED CYLINDER HEADS
We literally have hundreds of used – refurbished to like new – petrol and diesel cylinder heads for sale in stock.If we sell a cylinder head it carries our standard why worry warranty and will be ready to bolt on to an engine.Our used cylinder heads are refurbished in-house by a team of cylinder head specialists who collectively have around 50 years of cylinder head experience.We sell only the best and we are a one stop cylinder head shop.
RELATED COMPONENTS
What would the value of offering cylinder heads without being able to offer a customer a complete range of related components?
SAC Engineering also have the full range of valve springs, guides, inserts, cotters spring retainers and pre-combustion chambers for the full range of petrol and diesel cylinder heads.
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ADDITIONAL BENEFITS AND VALUE ADD SERVICES FOR OUR CYLINDER HEAD SALES OR EXCHANGE PROGRAMUSED & REFURBISHED CYLINDER HEADS
Did You Know we can arrange affordable courier collections or deliveries from anywhere in the country?
More Related to Cylinder Heads and Performance Valves
We stock all major brands of new and used cylinder heads
* All manufacturer’s names, numbers, symbols & descriptions are for reference purposes only. It is not implied that any part, conversion or modification is the product of these manufacturers.
SAC ENGINEERING STOCKS AND SELLS HIGH QUALITY CYLINDER HEAD GASKET SETS!
SAC ENGINEERING HAS HUNDREDS OF NEW AND USED CYLINDER HEADS IN STOCKS PROVIDES FAST AND RELIABLE SERVICE!
SAC ENGINEERING IN THE CYLINDER HEAD BUSINESS FOR OVER 40 YEARS AND OUR EXPERIENCED SPECIALISTS WILL PROVIDE YOU WITH EXPERT ADVICE!