Recently I was lucky enough to be loaned a dry sump pan from the last of Audi R8 V8 manual for a looksie. It was an interesting piece of engineering. This inspired this podcast episode. Check out the blog post on my website too! ***SAY HI!***

IDI not CDI for EFI

Jun 13th, 2021 8m 53s

Website: https://builtonpurpose.co/ Last build episode on youtube: https://youtu.be/w0QSTkiheCM Hey guys, it’s Aaron from Built On Purpose. This is going to be a technical article, an episode, so to speak. If you’re tuning in on the podcast, Mo

Nismo restored car program – preserving a monster

Jan 28th, 2021 4m 26s

in December 2020, Nissan announce the Nismo restored car program for BNR32, BNR33 and BNR34 Skyline GTRs. I think this is a great program however it is not a new concept for a manufacturer to restore popular models. Mazda have been restored the

The Nissan Z proto 400Z – designing a car for a legacy

Nov 26th, 2020 6m 22s

I’ve been able to live under a rock and avoid the hype around the Nissan Z proto 400Z release which was difficult being a made 240Z owner and fan. I emerge from under that rock and review the hype for myself. This raises a question for any new

OHV vs SOHC vs DOHC

Oct 26th, 2020 9m 29s

This week’s cast is brought to you by a suggestion on one of my YouTube videos by the user ‘New Found’. If you like this cast please help out by checking out the summary guide on my webpage here: https://builtonpurpose.co/ohv-vs-sohc-vs-dohc/ T

Forged vs cast pistons, what is the difference?

Oct 12th, 2020 5m 33s

Cast vs forged pistons, what is the difference? Both types use the same alloys but it’s the manufacturing process that gives difference results. Forged vs cast piston manufacturing The difference in manufacturing process is cast pistons are mad

Manifold port matching and engine intake reversion

Oct 5th, 2020 5m 17s

Visit the website: https://builtonpurpose.co/ Subscribe: iTunes | Spotify 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

What is Dynamic Compression Ratio?

Sep 28th, 2020 5m 12s

Download the dynamic compression ratio calculator spreadsheet here: https://builtonpurpose.co/tools/ Subscribe: iTunes | Spotify What is dynamic compression ratio? It is not commonly known. Most are familiar with static compression ratio used

What is knock threshold

Sep 21st, 2020 13m 5s

Check out the website: https://builtonpurpose.co/ Subscribe: iTunes | Spotify This episode is related to something that really grinds my gears and that is recommendations of using knock threshold to set ignition timing limitations. An example o

Coil over plug vs distributor

Jul 20th, 2020 5m 52s

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. Th

What is spark plug gap?

Jul 13th, 2020 6m 7s

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 co

How CDI systems work

Jul 6th, 2020 7m 16s

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 requi

What is ignition coil dwell timing?

Jun 29th, 2020 6m 27s

What is ignition coil dwell timing? 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 … Continue

How does an ignition coil work

Jun 22nd, 2020 4m 18s

Welcome to Tech Bit Tuesday episode number four aired on the podcast Mod Tune Win Repeat! This episode is a quick discussion about how does an ignition coil work. The ignition coil works the same way across all platforms using the process of

Spark plug heat range explained

Jun 15th, 2020 4m 44s

This little nifty piece of information is not something readily thought about with tuning. Spark plug heat range is a measure of thermal performance of a plug. The hotter the plug (on the NGK scale) the more heat will pass into the plug. A c

Fuel injector impedance explained

Jun 8th, 2020 6m 25s

So which injectors you choose for you EFI build doesn’t matter? Wrong! Fuel injector impedance influences a number of components. In this podcast (also shared on YouTube) I share the key differences between the two broad types of injectors.

Pull up resistors explained – Tech Bit Tuesday

Jun 1st, 2020 5m 9s

Pull up resistors explained! Welcome to the first episode of my new series Tech Bit Tuesday broadcast on on the podcast and the Built On Purpose YouTube channel. Tech Bit Tuesday is about sharing a piece of information that is valuable to me w

What is air fuel ratio?

May 27th, 2020 7m 21s

Probably the most important piece of tune data you can have comes from the air fuel ratio. Air fuel ratio is a measure of the combustion (oxidisation) chemical reaction between fuel and an oxidiser. The fuel is normally hydrocarbon based (eg.

Do you use factory or manufacturer tolerances?

Apr 27th, 2020 5m 39s

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.

Exhaust manifolds – Unequal, equal and tuned length

Apr 16th, 2020 11m 19s

Do you w as ant to understand the three main kinds of designs 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.Scientific design

What is investment casting?

Apr 6th, 2020 12m 50s

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.Visit https://www.datsunpartz.com/ for a comprehensive comparison on parts for your Datsun.Hit up

The car community and the pandemic

Mar 23rd, 2020 7m 41s

The plan was to talk about something technical but the globe faces a pandemic and I thought discussion about what a car enthusiast can do in this time is more important.Do you have a Datsun or 300ZX and want a good deal on parts? Visit dat

Ignition timing

Mar 3rd, 2020 5m 33s

The first episode!What is ignition timing and how do you determine if you have the right timing profile? That is the discussion for this brief episode.This episode is also as video cast on Youtube and IGTV, just search for Built On Pur

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