BMW e36 320i turbo

Hey everyone, I know what most will say "just get a m52b28" but you see I'm a 16 year old with 3k$ and a dream of 300hp,

So my question to everyone is has anybody done this, and would it be possible.

My goal is 300hp I will start off with premade everything and as things break I will replace it with something better.

My main dilemma at the moment is if it's going to be possible at all without blowing up the motor, I'd anyone here has had that experience please let me know what to avoid other than to not turbo the car.

Current parts list is as follows:

T3/T4 turbo

Ebay intercooler kit

Ebay top mount manifold

Manual boost controller

Wastegate whatever I can find for around 100-150$

*The list goes on but the most important art listed already

It would be great if someone with tuning experience can guide me along this, thanks for the attention!

What are you doing for fuel and ignition control?

This sounds like a RUD* in the making, you are wanting to double the output of the engine (148hp stock) by bolting a turbo kit onto it, without any supporting modifications. These engines have an 11:1 compression ratio, so putting a bar of boost into it will place a lot of stress on the engine and most likely run it into the knock region. You will probably find that you need larger injectors to provide enough fuel as well.

I'm all for DIY, but this sounds like a quick way to burn up a fair chunk of money.

* For those that aren't space nerds as well, a RUD (Rapid Unscheduled Disassembly) is the technical term used by SpaceX to describe the destruction of a rocket due to a failure leading to an explosion.

Currently I'm looking into a PNP standalone from RM https://lowcostracingsolutions.co.uk/pnp-standalone-ecu-s/36-62-bmw-m50-plug-and-play-standalone-ecu-320i-520i-325i-525i-7427248066354.html#/39-accessories-just_ecu

I'm not sure if it has been tested yet, but it seems promising.

For fuel I'm thinking of using m52b28 injectors with the fuel pump from an m52b28.

Let me know what you think of this, thanks

The b20 will take easy stock 400-500 on e85.

For 300hp on 98rpm it would hardly take 10psi.

Treat this like an RB20 when sizing a turbo, they don't flow much at all until 3k-3500rpm

You can get a chip to reflash the ECU otherwise a standalone is going to be required. M50b20tu runs the Siemens ms40.1 https://oldskulltuning.com/bmw-ecu-siemens-ms40-tunerpro-maps/.

Grab some bigger injectors, stock pump will do 450hp all day. You want a cutring head gasket, you won't get one for 2.0 bore, sometimes the 84mm ones are available otherwise 85-86mm will work fine, ignore what people say about the ring being bigger than the cylinder, no it's not ideal, yes it works all the same and won't blow out, especially not at 300hp. If anything it will just help to reduce C/R

ARP head studs and throw timing at it. These have a rod length ratio of 2.2 so the pistons TDC dwell time is for ever compared to most engines.

Currently in the process of doing this to mine while I build the 3.0 stroker

By the way, ICP Schroenenbek or something on YouTube has a stock b20 making 500hp on e85.

ARP main and head studs, x2 stock hg sandwiching a copper gasket bringing CR down to 7.5:1 and a heap of dyno time.

Not saying you could drag race it for long like that but just to give you confidence that you don't need to build the engine at all.

Hey Casper I'm planning on running it on 95 octane and 100 from time to time. What turbo pressure should I aim for if I want the 300-350hp with a big hy35w turbo?