Tips

Valves: When to Reclaim, When to Replace
By Larry Carley         

Performance engine builders can’t afford to take chances with questionable valves because they have to withstand high rpms and temperatures. Likewise, rebuilders who overhaul high dollar heavy-duty diesel 

 The reasons behind the diesel-powered

 Typical causes: extreme thermal cycles (continual sudden changing from full power to

A1 Radiator & Air Conditioning Specialists Limited has been under its current ownership since 1979 and has grown to become the “one-stop-cooling-shop” for Canterbury and the rest of New Zealand.

 Any injector problem at sea can be rectified by replacing the injector with a spare. However the candidate is required to know how the following faults can be identified and rectified.

 A very interesting article for the Technically Minded.

Abstract
This study focuses on investigation of the method of identifying injector faults in a JCB 444T2 diesel engine using
acoustic emission (AE) technique. Different kinds of injector faults were seeded in the four-cylinder, four-stroke,
and turbo-engine. Then, faulty injectors are tested to evaluate AE based injection fault detection.

 Would you believe me if I were to tell you that the presence of a few tiny bubbles, some so small that you need a microscope to see them, could destroy a diesel engine? One problem that has been plaguing the owners of diesel rigs for years is cavitation.

 Did you know that up to a third of the heat energy produced by an internal combustion engine ends up as waste heat in the cooling system?

 Internal combustion engines run on heat. Chemical energy in the fuel is transformed into thermal energy when the fuel burns, which produce mechanical energy to push the pistons, spin the crankshaft and drive the vehicle down the road.

 One of the most important parts of the cooling system is also the most invisible
A cylinder head gasket is required to affect a seal between the cylinder head and block of a gasoline or diesel engine. It is an integral component of the engine and is requires to perform many functions at the same time during engine operation.

 Since hydraulic lifters can compensate for thermal expansion of the engine, the adjustments can be made with the engine cold; hot adjustment is not necessary.

 
Remember, when making any adjustments experimentally, that the engine is notably sluggish before it has warmed
up. Unless you are deliberately trying to overcome that problem only assess what you have done with the engine
fully hot

 
This booklet is only intended to assist. Kiwi Cylinder Heads Ltd makes no claims to the information within to be
accurate. However it has been taken from reliable sources. If you believe any of the contained information to
be incorrect or inaccurate, please contact us on 0800-549-429

Caution!

When installing the timing chain tensioner, be sure to force the plunger into it, or the timing chain will be stressed excessively and may be damaged.

Click on the read more to download the information.

Please ensure the camshaft seal housing and camshaft seal center on the camshaft after fitting housing. If not centered then oil leak may occur and the timing cover and timing equipment will need to be removed and re-fitted to rectify the leak.

Please check at fitment. If deemed too out of alignment then removing the dowels and aligning and locking bolts down will rectify.

Toyota 1KZTE Camshaft

The camshaft bearing caps on this cylinder head are located with a single dowel only which can to lead to problems during installation. The bearing caps are able to move on the non dowel side and if tightened on an angle will lock up the camshaft. As the head was line bored in the manufacturing process the issues arise from the alignment of the bearing caps during assembly

Toyota 1KZTE Camshaft

The camshaft bearing caps on this cylinder head are located with a single dowel only which can to lead to problems during installation. The bearing caps are able to move on the non dowel side and if tightened on an angle will lock up the camshaft. As the head was line bored in the manufacturing process the issues arise from the alignment of the bearing caps during assembly

Click on the read more to download the notes.

 Bosch common rail diesel injectors – problems relating to the following symptoms

• Hard or difficult starting
• Erratic or uneven tick over or idle
• Lumpy running
• Hesitation on acceleration
• Smoke on tick over or acceleration
• Lack of power

Threaded Fasteners Torque-to-Yield and Torque-to-Angle
By Bill McKnight

Understand torque-to-yield (TTY) fasteners, you need a good fundamental understanding of threaded fasteners in general. The threaded fastener topic is a huge one.

Diesel Trouble Shooting Explanation

Low engine compression will result in insufficient heat being generated to ignite the fuel and cause hard starting. This is more of a problem with older or high mileage vehicles. To find out the compression perform a cold engine compression test. Compression should be between 20 to 35 bars or 300 to 500 PSI. Anything below this will cause starting problems. 

Diesel Trouble Shooting

The cylinder head gasket is arguably the most important seal in the automotive engine. Since the birth of the internal combustion engine, gasket designers have specified many materials to meet this critical sealing challenge

READ THIS BEFORE PROCEEDING

Congratulations for purchasing a quality cylinder head from Kiwi Cylinder Heads.  Please read the following notes carefully to ensure the installation goes smoothly and the repair is completed effectively.

If you have any further questions please call 0800 549 429 for assistance prior to fitting this head.

This kit contains...

1. Ensure both mating surfaces are clean and free of dirt and oil.
2. Do not clean block threads with a thread tap. Use an old...