Mod Tune Win Repeat: Retuned

**This is a replay from the old podcast series lost to the internet** Original upload date: 26/11/2020 I’ve been able to live under a rock and avoid the hype around the Nissan 400Z release which was difficult being a made 240Z owner and fan. In this episode I emerge from under that rock and review the hype for myself raising the question, is if difficult for a manufacturer to design something uniq...

**This is a replay from the old podcast series lost to the internet** Original upload date: 27/10/2020 There are three types of valve-train used in petrol engines and all three are still produced new. This a guide we're going to discuss OHV vs SOHC vs DOHC, the good the bad and the ugly of each. I've been lucky enough to own and fiddle with variants of all three. Bear in mind this is a gen...

**This is a replay from the old podcast series lost to the internet** Original upload date: 13/10/2020 Cast and forged pistons are made from the same materials. Both types of pistons have the same density. So what makes forged pistons stronger than cast? Watch the latest YouTube video  HERE Please leave a rating or review if this was useful and check out the rest of the podcast. Links YT:  ⁠Built...

**This is a replay from the old podcast series lost to the internet** Original upload date: 6/10/2020 Now, match porting manifolds. This is the process of modifying ports to align smoothly at the gasket, removing obstructions to the air flow pattern.   Why do this? Well let’s jump into some background info on fluid dynamics. Air is essentially a compressible liquid and conforms to hydraulics.   Wh...

**This is a replay from the old podcast series lost to the internet** Original upload date: 29/09/2020 What is dynamic compression ratio? It is not commonly known. Most are familiar with static compression ratio used to describe a characteristic of engine. But what is the difference of dynamic compression ratio vs static? Static compression ratio uses the volume associated with a full sweep of the...

**This is a replay from the old podcast series lost to the internet** Original upload date: 22/09/2020 The detonation or knock threshold may not be properly understood by some. In this episode I break down what is detonation, knock, pinging threshold and how auto ignition contributes. Knock, pinging, detonation is the name given to the phenomena when one or more auto ignition flame front, separate...

**This is a replay from the old podcast series lost to the internet** Original upload date: 21/07/2020 So what is the difference between coil over plug and distributor?  Simplistically the difference is the number of ignition coils. A distributor-based ignition has one coil for the whole engine using mechanical means to distribute the spark.  This type of ignition does not require any electrical c...

**This is a replay from the old podcast series lost to the internet** Original upload date: 14/07/2020 What is spark plug gap? It is the measurement between the ground electrode and the centre electrode that the ignition spark arcs between. You can have the most advanced ignition system around but if you do not have the gap between electrodes correct your ignition system will not function correctl...

**This is a replay from the old podcast series lost to the internet** Original upload date: 07/07/2020 How CDI systems work is thanks to capacitors. Capacitors are a form of batteries that can physically store energy.  This is useful to ignition systems as the energy can be discharged instantaneously unlike traditional ignition coils which require time to generate and collapse a magnetic field to...

**This is a replay from the old podcast series lost to the internet** Original upload date: 29/06/2020 What is ignition coil dwell time? It is an important parameter which is governed by how an ignition coil works which was covered in the previous episode. Using an incorrect dwell time for your ignition coil could result in misfires from weak spark or damages coils from heat.  How long does dwell...

**This is a replay from the old podcast series lost to the internet** Original upload date: 15/04/2020 This episode is a quick discussion about how does an ignition coil work.  All ignition coils work the same way using the process of electromagnetic inductance.  Ignitions coils are constructed using an iron core.  This iron core is wrapped in thin wire called the secondary winding.  The secondary...

**This is a replay from the old podcast series lost to the internet** Original upload date: 16/06/2020 What to know what spark plug heat range is and how it affects your engine performance? A spark plug heat range is a measure of the spark plug thermal performance to transfer heat from the combustion chamber into the head. If the spark plug does not conduct enough heat (a cold plug to NGK scale) i...

**This is a replay from the old podcast series lost to the internet** Original upload date: 28/04/2020 Today's podcast episode is thanks to a question I received from David Moynihan. David hit me up on Facebook messenger about his unique stroker build and was which piston ring gap should be used, factory or the manufacturer's specification. Links YT:  ⁠Built On Purpose⁠ IG:  ⁠@built_on_pur...

**This is a replay from the old podcast series lost to the internet** Original upload date: 15/04/2020 Do you want to understand the three main kinds of exhaust manifolds? Exhaust manifolds can be grouped in unequal, equal and tuned length manifolds. There are a few key differences explained in this podcast. Links YT:  Built On Purpose IG:  @built_on_purpose FB:  Built On Purpose Shop:  Kyusha Spe...

**This is a replay from the old podcast lost to the internet** Original release date: 06/04/2020. What is investment casting? In this episode I discuss what it is and how it is used by Whitley Tune to produce high end bespoke car parts particularly intake manifolds. The traditional method of investment casting uses a die mould that is injected with wax. That wax profile is then dipped in a ceramic...

**This is a replay from the old podcast series lost to the internet** Original upload date: 04/03/2020 I thought I’d start with a discussion about ignition timing and what is the underlying principle for why ignition timing changes. Links YT: Built On Purpose IG:  @built_on_purpose FB: Built On Purpose Shop: Kyusha Speed