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Practical Engine Building: Component Marking

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Component Marking

04.33

00:00 - At this point in the course we've covered the HPA 10 step process which you can apply to any engine assembly job.
00:08 Of course within those 10 steps, there are a wide range of important tasks that need to be completed in order to produce a perfect finished product.
00:18 We refer to these as practical engine building skills, and in this section of the course we're going to cover the most common and most important tasks you're going to need to perform while assembling engines.
00:31 In this section you'll learn what you're trying to achieve during a specific task, what the correct techniques are, and what to watch out for while completing the task.
00:42 You'll also be able to see these tasks being demonstrated in real time so you know exactly what you should be doing.
00:50 Engine building isn't necessarily a difficult task, but it does require specialist knowledge if you want to achieve reliable results.
00:59 The skills contained in this section, make up what we consider to be essential knowledge for any engine builder.
01:07 Like any skill, these will take time for you to master.
01:11 So particularly while you're just getting started, I recommend that you take your time and don't try to rush anything.
01:17 When you've finished a particular task, it's also advisable to double check your work, to ensure everything is just right.
01:26 Let's begin by discussing the techniques we can use to mark and label the internal engine components.
01:33 An important consideration when it comes to fitting components into an engine, is marking the components so we know where they go in relation to the engine.
01:42 What I mean by this is marking the pistons so we know which cylinder they're going to be located in.
01:48 This is particularly important at a later point when the engine is disassembled and reassembled after a freshen up.
01:55 We want to be very sure that all of the components are going back in the correct location.
02:00 Particularly when it comes to components such as the connecting rods, we also need to be very sure that the connecting rod body, and the cap of the connecting rod, are kept as a matched pair.
02:11 Due to the manufacturing process, and the way the big end journals are bored and honed, we can't swap caps between different connecting rods.
02:21 The same goes if we are replacing the factory main bearing caps in the engine block with an aftermarket billet cap.
02:28 These caps will be machined, they'll be bored and align honed, to suit the particular location in the block.
02:35 And if we mix these up and get them in the wrong location, this can end up affecting our bearing clearances and the reliability of our engine.
02:44 Now when it comes to the actual marking techniques, there are a variety.
02:49 We can go for something as simple as using a sharpie or permanent marker, which we can see here on the body and cap of this connecting rod.
02:58 This is a nice easy, non intrusive way or marking our components but we do need to be very careful because this can easily be removed during the cleaning process.
03:10 If we grab a rag and some brake clean or isopropyl alcohol, we can see that it's very easy to remove the markings from the conrod and the cap.
03:21 Now particularly if the components are disassembled and mixed up, this can lead to disaster.
03:27 So if you are going to use this technique, you need to be very careful, particularly during the cleaning process.
03:34 A more permanent technique is to use an engraver such as this Dremel engraver I have here.
03:40 These can be purchased from a variety of sources and can be purchased quite cheaply.
03:45 Using an engraver allows us to make a more permanent mark as we can see here on these billet main bearing caps.
03:52 I've also made a permanent mark on the underside of this JE forged piston so that I know what location in the engine it comes from.
04:01 Particularly when we're marking components such as a piston we do need to be careful where abouts we're going to make those marks.
04:09 What we want to do is make it in a situation where we're not going to be affecting the strength.
04:14 So as we can see here I've chosen the underside of the wrist pin boss.