NA to Turbo - The Ultimate Guide that Covers Everything + Cost Breakdown

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Published 2023-01-22
Parts prices are listed throughout the video and the total cost breakdown is at the end of the video

Check out the brands that made the build possible:
www.aemelectronics.com/
www.weldspeed.com.au/
midshipgarage.com/
www.maxpeedingrods.com/
www.mrpltd.co.nz/
gfb.com.au/

Related videos that explain concepts mentioned in this video:
Compression ratio:    • COMPRESSION RATIO: HOW to CALCULATE, ...  
Knock:    • A DETAILED overview of KNOCK and PRE-...  
Turbo basics:    • TURBO 101 - How it WORKS and what's I...  
Engine block in-depth:    • HOW TO build an ENGINE block for BOOS...  
Boost control:    • ALL BOOST CONTROL setups EXPLAINED - ...  
Reflashing vs standalone ECU:    • Which ECU is Right For You? - REFLASH...  
Fuel pump in-depth:    • HOW and WHY to upgrade your FUEL PUMP...  
Exhaust manifold in-depth:    • EQUAL LENGTH tubular vs. LOG manifold...  
Blow-off valves:    • TURBO FLUTTER and BLOW OFF VALVES exp...  
Transmission rebuild in-depth:    • How to install an LSD and REBUILD a T...  
Ring gaps:    • Piston RING GAP - HOW and WHEN to adj...  
Bearing clearance:    • BEARING CLEARANCE - How to MEASURE an...  
Porting in-depth:    • PORTING the F out of it - Cylinder HE...  
Semi- forged pistons:    • What are SEMI FORGED PISTONS?  

This video is the ultimate guide on how to convert a naturally aspirated vehicle into a turbocharged one. It covers engine internals, the cylinder head, transmission, turbo features and turbo plumbing, fuel delivery, intercooling, ECUs, ignition, heat management and much much more. This isn't a video meant to entertain you, instead it's designed to be a comprehensive reference and the only video you need to watch get a practical, realistic and all encompassing overview of everything that needs to be done to properly, safely and reliably turbocharge your vehicle.

Let us start with the heart of the engine. The engine block and its internals. As you will see throughout this video turbocharging an engine will require you to make many choices and these choices are important because we all have a budget and also because they can heavily influence the amount of work you will need to do as well as the ultimate capabilities of your completed engine and of your completed build. These choices are also important because it is impossible to have it all and most of the choices in your build will be compromises. Stuff like power potential vs longevity or power potential vs cost or power potential vs street legality and so on.

When it comes to the engine block level 1 would to be simply take your naturally aspirated engine and turbocharge it without opening up the engine or doing anything to the internals or the cylinder head. This has been done many times, and sometimes the results have been pretty good. Turbocharging an engine without opening it up means that you will have to do the least amount of work and spend the least amount of money but your ultimate power potential and longevity will be limited. Also if you're considering turbocharging a tired engine with many miles I would strongly advice against it. You will do a lot of work and invest a lot of time to turbocharge such an engine and the reward you will get from it will in most cases be minimal as such an engine will likely fail soon.

Now your level 2 engine internals approach is going to require you to open up the engine and take it apart. My personal opinion is that this is a more sensible approach. Because you'll be investing a lot of your time and money into turbocharging your engine so it's a wise decision to be able to see it's actual condition and to correct any issues you may run into. On the other hand opening up and engine also starts you into a rabbit hole known as "since I'm already in here". Stuff like since I'm already in here I might as well put in some forged rods. Since I'm already in here I might as well port the cylinder head. Since I'm already in here I might as well destroy myself financially. There is a very high number of areas you can address inside an engine and unless you have an unlimited budget than you will have to make choices and sacrifices. The first thing that should be done before making any parts purchases is to check the actual condition of your engine. Your cylinder bores as well as your rods and crankshaft journals. You can do this yourself if you have access to the tools or leave it to a machine shop.


A special thank you to my patrons:
Daniel
Pepe
Brian Alvarez
Peter Della Flora
Dave Westwood
Joe C
Zwoa Meda Beda
Toma Marini
Cole Philips

00:00 Choices and prep
03:16 Pistons
05:22 Crank and rods
08:46 Cylinder head
12:45 Transmission
14:31 Clutch
15:23 Lubrication
16:22 Turbo manifold
17:22 Turbo sizing
19:02 Turbo plumbing
21:51 Fuel
24:47 Heat management
25:29 Intercoolers
26:28 Blow-off valves
27:11 Ignition
28:50 ECU and sensors
31:32 Drive axels

#d4a #boostschool

All Comments (21)
  • You know that if driving 4 answers uploads a video titled "The Ultimate Guide" it's actually going to be a comprehensive guide
  • @builtbybagsy
    'Since I'm already in here, I may as well destroy myself financially'..... I laughed so hard at that one....... then went real quiet when I started doing the sums.
  • @skaarj71
    From simply adapting motorbike carburetors to completely building your own engine with the exact specs you chose wow that's commitment right there mate! Watching your channel grow since it had 4 digit subs to what it is right now is crazy. Keep the good stuff coming
  • @maglev_
    this is one of the best videos ive ever seen even though you said “its not meant to be an entertaining video” i was very entertained. Great to see the car running after following this build for so long and its awesome to see the people who helped you through it. cheers d4a, will see you in the next vid.
  • "Since I'm already in here, I might as well destroy myself financially." Really hits home. Lmfao You can ALWAYS justify a few more dollars to yourself. It snowballs so fast. I'm glad you spoke on "appropriate" turbo sizing for your use case. I like street cars, that means I don't need nearly as much top end as I do bottom end. In real life I will almost never go faster than 120mph in most use cases. I went with a smaller turbo, it's much more responsive and makes the car fun to drive. My 0-80mph times mean more to me than overall HP or speed above that. In the end I get a spirited, quick accelerating daily driver that doesn't come with all the headache of chasing truly insane numbers. 300-400hp is as much as I ever care to have.
  • @Teledible
    A year ago I knew nothing about cars. But thanks to channels like yours, I’ve gained so much technical insights about cars that I’ve finally started having dream builds. Your work inspire me man. Hopefully someday I can built something that can go on inspiring others
  • @Alfaduk
    Another excellent video. Also being an AW11 MR2 tragic, you've motivated me to do better firewall insulation than standard. 3 thing that any first time project builder will learn: It ALWAYS costs more than you think it will. Do your darndest to think of all the things that need to be bought/paid for and what those are likely to cost. Now double that amount and you should be reasonably close............ Do it right the first time! Doing it properly means you should only need to do it once. Which typically costs less than doing it multiple times........ Double check EVERYTHING! Having to redo work because you didn't correctly tighten some really difficult to get to nut/bolt/hose clamp/fitting, is bad enough. Breaking your engine/gearbox because you didn't correctly tighten something, is a lot worse!
  • @k1ll3rvc
    Nice work! Getting hill climb folks involved is a strong choice, they're usually chasing mad performance goals and using any method available 😆
  • @jozsefizsak
    We can see that even being knowledgeable about the best value products, such as the rods and turbo, the final price for doing this properly is pretty high by most people's standards. I can tell you that it wasn't cheaper in the 70s and 80s but I was able to swap parts from other models and have pretty decent power with a rebuilt NA engine for very little. They do run very nicely if you obsess over every detail so I'm really excited about yours. I truly admire the care, research and effort you put into things.
  • @Ovenman940
    35 minute d4a video about turbos - I already know this is going to be the highlight of my Monday workday
  • Amazing job with friends. Congratulations. We expecting more videos ripping it at twisted roads
  • @Laylander
    Glad you mentioned your friends in this guide. Without experienced friends you simply can't do this succesfully on first try. They're worth at least the same as the whole cost of the project, because you'd have to do everything twice.
  • I can barely make the most basic stuff on my bike so this kind of videos never cease to amaze me. That is truly impressive work !
  • @VR-od1jl
    Nunu the workshop cat was absolutely the best part of the video ! His supervision skills are top!!!!
  • @DJNADJIBBeatz
    man i can't explain to you how much i needed this vid, i'm working on my thesis/end of study project on turbocharging an NA engine and you just uploaded this,thank you man thank you
  • @dalebob9364
    Finally someone installing parts on an engine correctly! 👍
  • @abobegar
    Great video! Liked the final in natural language.. :)) Greetings from Bulgaria! :)
  • 15k. damnnn, i knew it was expensive, but i didnt want to be slapped with the price that hard :D... well, i'll return to saving up, thanks for an insight :D
  • @logtrimmer
    You are one of the first vehicle related YouTubers I started watching and you explain things in ways that are simple enough to be understood without oversimplifying it. There is a question that I have relating to turbos. What types of turbos exist, and what are there pros and cons? This comes from recently hearing about VGTs.