Faster WITHOUT A Carb | 240Z Street Legal RACE Build

This 1973 Datsun 240Z (S30) is an excellent example of modernising an older vehicle for competition motorsports, and still driving it home afterwards complete with aftermarket ABS!
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With double the stock horsepower via a 3L Nissan L28 with custom pistons, rods, cam, and a ported N42 head care of Datsun Spirit Inc, Darren Garvin's 240Z (aka Nissan Fairlady Z) was a standout from the crowd at the 2022 OPTIMA street car challenge.
An Electromotive electronics package has been utilised to help take the car from its factory 150hp (at the crank) carbed output to 300hp at the wheels, with the ATI harmonic damper holding a hall effect trigger setup and the TPS and MAP sensors being used as load inputs and a Jenvey Dynamics 50mm ITB setup on intake duty. Also discussed are other considerations around a carb to EFI conversion.
A faster car needs better brakes, with the factory setup, including drum brakes on the rear, being retired in favour of an Arizonzacar brake package that includes Willwood 4 piston callipers and 12.5" rotors. The car also utilises an ABS system from an E46 M3 BMW, and Darren runs us through the requirements, including yaw, pressure and speed sensors.
The drivetrain sees a 240SX gearbox mated to a 280Z bell housing, Quaife diff and CV axles to put the power to the ground, and a shortened driveshaft and Techno Toy mount kit to help get and keep it all in place.
With most owners ditching their L series in favour of an RB26 or LS V8, it's nice to see this 240Z chassis simply modernised vs radicalised and with 40-50hp more as planned, this car is undoubtedly going to be even more of a weapon on track.
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TIME STAMPS:
0:00 - L Series Datsun
0:19 - Datsun 240z Autocross/Street Car
0:35 - Why Keep The L Series?
1:15 - Engine Modifications
2:07 - EFI Setup
2:42 - Direct Fire Coil System
3:05 - Trigger Setup
3:30 - Batch Fire
4:14 - TPS vs MAP
4:40 - Driveline
5:36 - Streetable Build
5:54 - Brake Setup
6:24 - Why ABS?
6:55 - ABS Conversion & Control
8:30 - Reluctor Rings
9:07 - EFI Fuel System Conversion
10:08 - Thanks Darren!
10:32 - Free Lesson. Get On Into It
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TAGS:
#highperformanceacademy #240z #datsun #fairlady #nissan #lseries #ousci #sema #arizonazcar #electromotive #quaife #abs #willwood #learntotune #enginebuilding101 #dontletthesmokeout #wiring101 #datanerd #gofasterwithdata #racecraft #learndriveoptimise #motorsport #buildtunedrive

[@garagegurutv6419]

These are the kinds of builds I love! Keeping the nature of the L Series that is so iconic in the Z platform while updating it to be a livable, lethal package!!

[@hpa101]

We have 4-5 more like this from this event lined up. Taken us a while to get sorted from when they were filmed but if you liked this I'm sure/I hope you will enjoy the others too. Some great builds out there in this scene 😎 - Taz.

[@MindDezign]

Giving the classic S30 attention ! Great to see!

[@76S30]

I am always excited to see S30 Z's. I have a 76. I really want that ABS system. I have sequential fuel and spark and no cam sensor. Using only a crank sensor. I have a hall sensor that runs off of the oil pump mounted where the distributor used to be. It's made by Tim (Great guy) at one six industries. I'm using a Haltech Elite 750. I wish I had Z guys near me to collaborate with. That's a beautiful car you have. Take care of her😍

[@bryanst.martin7134]

I was thinking instead of the reluctor rings, if the rotors are vented, turn the inside to be concentric and use an inverted pickup. I have a customer with 3 Z cars we are restoring. I think he will like this video.

[@dpalermoful]

Great interview Darren!

[@TurboVisBits]

The E46 M3 ABS module is very pricey, the Bosch motorsport ABS system is very similar but configurable.

[@hpa101]

Yes, they are night and day in configurability terms, you can adjust the Bosch unit on the fly too. I don't think anyone will claim they are equals. While the BMW based option is a bit more expensive now that it has become more popular, comparatively it is still cheaper, and while you get what you pay for it is understandable when compared to no ABS due to being priced out of a top-tier product like a Bosch unit, it is still an amazing upgrade to a car like this 😎 We are actually fitting a Bosch unit to our SR86 for next season. Should be an update on it soon and we have fitted the other option to Andres FJ40 project (just a street build, not a race car) however the Bosch unit will be up and running before we have finished the 40 series - Taz.

[@sidbobby3233]

Some times i think just coz we have tec to move it forward maybe its good to hold fire & use what works, as the owner kept saying its very reliable.. if she gose & runs nice no need to drip her in tec that u need bill gates to set up. Interesting vid mate. Many thanks frm the UK 😎😎✌✌👌👌👍👍

[@hpa101]

Pros and cons for everything for sure. The goal is to build what you want to enjoy rather than what someone else would enjoy at the end of the day, whatever that looks like 😎 - Taz.

[@sidbobby3233]

Thanks mate 😎😎👌👍👍✌✌

[@arcanedefiance]

I would love more details on how to do this ABS swap! Struggling to find and good info on it

[@adeadlyfart13]

Why, why, WHY did we not get to hear this engine sing? Great interview to only get absolute disappointment by not hearing that straight six.

[@stuart207]

I would stick an rb35 in that toooooday! 😂

[@goldysgarage189]

Adding EFI to a ‘non kitted’ motor is tough to do

[@tipoulio]

It's not really hard on L series engine. Nissan made the L24 carburated but the later version, the L28 used a EFI set-up. You just need an ITB kit or an EFI intake, an EFI harness, a ecu and a crank angle sensor or cam sensor. I've done it on my 280z, converted it to ITB and it was a simple process. Especially since the parts to make it work are all already available to purchase.😊

[@Low760]

Interesting to stick with such an old ecu when megasquirts are pretty cheap and much more powerful. Let alone other units.

[@hpa101]

I could be wrong, but I'd say it's been in there a while now and has given no reason to see it replaced with something else for the sake of it. There are certainly more featured (and better supported if you are not tuning yourself) options out there now if you were to build this today though, and at great price points too - Taz.

[@customzdream]

Go the zzzzzz

[@Takeitlightly6]

you know for these interviews, you guys need to read the truth detector.... master the art of elicitation.

[@hpa101]

If we don't have the guys bank account details and passwords by the end of the interview mission failed right 😂 - Taz.

[@Takeitlightly6]

@@hpa101 why settle for less?

[@semitones]

Young fella needs to do a lot more interviewing and build up some experience on keeping the conversation flowing - it's fairly painful to listen to ATM, but keep working on it.

[@hpa101]

Only one way to get experience eh! Connor is off to a great start and has the knack for it. Andre doesn't like to see any of his original videos on the channel as he feels he's come so far since then too. Cheers for the support - Taz.