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I am building a 73 240Z at which I have goal of netting 550bwhp. Here are my specs:

Engine: L28ET with J.E. Pistons, Titanium Valve Spring & Retainers, Eagle Forged Rods, Race Rod Bearings, Crane valves, Comp Cam, Comp Timing set, HKS 2mm Head Gasket, ARP Head Bolts, Euro Damper, Port and polished Head, Bosch Alternator, MSA Billet Alumimum Alternator Adjustment Arm, High Capacity Oil Pump, and all new Gaskets

Turbo System:

Garrett T3T4 Hybrid Turbo, Custom Top Mount Turbo Manifold, Tial BOV, Internal Wastegate, AVO intercooler 21x8x3 core, 2.5” inlet/outlet, and Custom Turbo 3 inch Downpipe with custom 3 inch piping all the way to the exhaust (Magnaflow Turbo exhaust?).

Intake:

Q45 90mm throttle body, HKS Mushroom Filter, and Port matched Intake Manifold

Engine Management: L28ET ECU, Greddy E-Manage Ultimate, LC1 wide band O2 sensor and controller (still need to purchase one), Apex Multichecker (not a direct application but I will attempt to make it work), and GM 3 wire Map Sensor

Fuel: 13 gal. Fuel Cell, Walbro 255LPH External Fuel Pump, 550cc Top Feed Low Impedence Injectors (might be swapping in some 720's once the engine is broken in and I have funds to purchase them), Custom O-Ring Fuel Rail, SARD Adjustable Fuel Pressure Regulator, Vortech Fuel Management Unit, G & J Stainless Steel -8 and -6 Fuel Lines and Fittings.

Ignition: Stock L28ET Distributor, NGK Platinum Spark Plugs and Wires, and MSD Coil.

Is there anything that I'm missing? Comments and Suggestions are very welcome!

Edited by WTZ?
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https://www.classiczcars.com/topic/33680-my-budget-s30-turbo-build/
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For starters, you didn't mention anything about how you're going to put that power to the ground, i.e. drive train components, etc. Or what you're going to do to keep from twisting the unibody to a pretzel. What's your time frame and budget for building this car?

For starters, you didn't mention anything about how you're going to put that power to the ground, i.e. drive train components, etc. Or what you're going to do to keep from twisting the unibody to a pretzel. What's your time frame and budget for building this car?

Yes, I only posted my engine specs. My car luckily has only minor surface rust on the frame rails. I am reinforcing the body with a full roll cage with bars going from the front of the car connecting to the cage inside. Sorry I don't know the actual term.

Transmission: I am using a standard 5 speed from a 280Z which I am already currently using with a 6 puck clutch, Custom Stainless steel clutch line, R33 Clutch Slave Cylinder, and R200 rear end.

Suspension: Polyurethane Bushings, Solid Diff Mount, ST front and rear Sway Bars, Custom Coilovers with sectioned struts, Bump Steer Spacers, and Custom Tension Rods.

Brakes: Toyota 4x4 calipers (already in the car), Stainless Steel Brake Lines, Rear Disc Conversion, Brake ducting (currently using).

Wheels and Tires: 15x10 Panasports, 265 50 15 Hankook Ventus H101 99S (switching to these once I have the motor in).

I don't have a timeframe on the build as this is a budget build, The motor is complete but I am still waiting for a few parts before I can drop it in the car. I am hoping I can have the engine in the car by December or January next year. Also, the T3T4 Hybrid turbo will only be used for the break in. I have another turbo to use after that which will help me reach my goal.

Sounds like quite the project. If I have any input is it that you will need a "better" ECU system than the Nissan ECU with "Greddy E-Manage Ultimate" system to tune with. Not that I know anything about Greddy's system. Most the world over at hybridz.org seem to be Megasquirt or Wolf3D fans, but there are more and more options out there everyday.

You also will get more enthusiastic and detailed feedback from the gang over at hybridz.org. There is plenty of interest here, but you will get more of what I believe you are looking for over at hybridz.

All the best.

Jim

Sounds like quite the project. If I have any input is it that you will need a "better" ECU system than the Nissan ECU with "Greddy E-Manage Ultimate" system to tune with. Not that I know anything about Greddy's system. Most the world over at hybridz.org seem to be Megasquirt or Wolf3D fans, but there are more and more options out there everyday.

You also will get more enthusiastic and detailed feedback from the gang over at hybridz.org. There is plenty of interest here, but you will get more of what I believe you are looking for over at hybridz.

All the best.

Jim

I actually have the same thread over at HybridZ. No one gave me advice on my set up and it's been up there since August. Everyone's more interested in my build pictures and updates rather than giving me pointers and all. Not that I have something against them but I'd rather have more gearheads see my build and give me proper advice on things that I may have left off or forgot.

Depends on what you ask over there on hybridz........90% of the questions have been answered twice already. What is your real question? You have said anything about what psi you plan to run at.....standard 5 speed will not hold up to the 550hp you are looking for.

Search over on hbz and read through other turbo builds and what hp levels they got to. I am in the process of building a L30et motor. More reading than posting, honestly.

Depends on what you ask over there on hybridz........90% of the questions have been answered twice already. What is your real question? You have said anything about what psi you plan to run at.....standard 5 speed will not hold up to the 550hp you are looking for.

Search over on hbz and read through other turbo builds and what hp levels they got to. I am in the process of building a L30et motor. More reading than posting, honestly.

The question I have is is there anything I missed from my plans. I plan on boosting from 15-20 psi but not with the turbo that I have for the break in. I forgot the specs on the second turbo that I have. I thought the L28 5 speeds can handle up to 600? I have read several builds and I am actually basing most of my plans from other people's. At the same time, I wanted to get input from everybody if there is anything that I overlooked or need to make my build a possibility.

Update: my friend made me a custom aluminum dash with holes drilled for autometer gauges, switches and my Apex Multichecker. I will post pics tonight or tomorrow. My wife is pushing me to have the roll cage done asap since the car is my current DD and I pick her up with the Z from work. She got real shaken up since she was in a car accident yesterday morning. A dumb lady driver was multitasking and rear ended my mom and my wife at 45 mph. They're ok but I will be forever cursing the lady.

  • 1 year later...

Nice freakin setup man... i cuurently have a similar setup right now almost down to the T.

Block:

* F54 L28et turbo block

* JE Forged Pistons and rings 89mm

* Mechart A-Beam Investment casted Stainless Steel rods

* ARP Rod Bolts

* Diesel Maxima Crank shaft Knife edged lightened and Zero balanced

* Nismo Main cap bolts

* Genuine Nissan factiry Main and rod berings

* Nismo oil pump

* ARP Head studs

* SCE 2mm Solid Copper head gasket with sealing rings

* Brand new Front timing cover

* New water pump

* New Oil pump drive spindle and crank gear

* Nismo single groove dampener w/ Nismo front crank bolt

* 83 280zx turbo oil pan

* all nissan seals and gaskets

Head:

* P90 Head off 83 ZX turbo

* Schnider Cam Lift(In/Ex): .460/.460. Duration(In/Ex): 270/280.

* Schnider matching dual valve springs, retainers, lash pads, and rocker arms

* Ported polished

* 5 angle valve job

*New vale seals

* Resurfaced and decked combustion chamber and intake/exhaust side

* N42 non-egr intake manifold

*420cc injectors

*JSK Fuel rail w/ Autometer pressure gauge

* T3/T4 Turbo Off 82zx 280zx 800 miles since rebuild

* 82 280zx turbo outlet without power steering and a 83 280zx turbo outlet with power steering

* 2.75" exhaust mid pipe

* Oil pressure T-fitting w/ Hard style oil to turbo

* zx turbo valve cover

* 83 280zx full Engine harness with ECU

* 83 280zx Mass air Flow sensor w/intake boot

* 83 280zx electronic distributor

* MSD boost dependent Spark retard Box

* 2.5" thick innercooler

Prob gonna upgrade the injectors to around what you got, or 650cc. Just fig the list might help with your build. Did know if you wanted to go with a cam upgrade or crank too. The setup cost me about 5k. After the power pak is implanted said and done im going to upgrade the suspension system, and displacement, either the R200 or R230.

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