[gofastnow]

Hi there

As you guys now there is 2 different E90 320i's (for the people in the states, yes bmw actually makes those 4 bangers .....

1. Bmw E90 320i multipoint 150hp motorcode: N46B20
2. Bmw E90 320i Direct injection 170hp motorcode: N46B20.

Yes they have the same engine, but the direct injection in the second 320i gives +20 hp :O

As you guys can guess i have the 150 hp version. If my engine suddenly blows up one day :P can I then put the 170 hp version engine in instead of the 150 hp......


What does this require? is it possible.....which parts do i have to change and etc if i buy the 170 hp engine

Hope you guys can help me out


and please dont: "actually it's cheaper for you to just upgrade and bla bla.."

[mercury26]

The cost and time to do this would make it unrealistic to do. Your better off find the whole motor, ECU, wiring harness, etc and dropping it in your car. Or better yet, find a car with this motor in it and purchase it.

Cheers,

Chuck

[tuned2ride]

1. Bmw E90 320i multipoint 150hp motorcode: N46B20
2. Bmw E90 320i Direct injection 170hp motorcode: N46B20.

This is unusual to have the same engine code.

Anyway if you want to swap the engine, I'd go with a 6 cyl. not all of this to gain only 20HP.

[gofastnow]

Originally Posted by mercury26

The cost and time to do this would make it unrealistic to do. Your better off find the whole motor, ECU, wiring harness, etc and dropping it in your car. Or better yet, find a car with this motor in it and purchase it.

Cheers,

Chuck

That's what im exactly going to do.

The motor and the ECU is not the problem....

I have a car which dont have direct injection and im gonna put a engine in with direct injection.....which troubles would this make? I have to retrofit something......i dont think it a "plug and play" swap

[gofastnow]

Originally Posted by tuned2ride

This is unusual to have the same engine code.

Anyway if you want to swap the engine, I'd go with a 6 cyl. not all of this to gain only 20HP.

no because they wont realise that I did a engine swap...when im doing this......if i swap with the 6 cyl engine im gonna pay a lot of money.

[chrisnetcom]

Originally Posted by gofastnow

no because they wont realise that I did a engine swap...when im doing this......if i swap with the 6 cyl engine im gonna pay a lot of money.

Is it really worth the several thousand you are going to pay to swap to the DI engine for only 20 hp? You can't swap the DI components to your current engine - it's a different head, ECU, fuel system and pump. Not worth it at all.

[gofastnow]

Im NOT talking about shifting parts.....im gonna buy a whole NEW ENGINE with 170 hp and direct injection

Which complications will there be when i put the 170 hp engine in my car?

[chrisnetcom]

Originally Posted by gofastnow

Im NOT talking about shifting parts.....im gonna buy a whole NEW ENGINE with 170 hp and direct injection

Which complications will there be when i put the 170 hp engine in my car?

I didn't say that. I asked, 'is it worth the price of a new engine'.

YOUR WALLET is the complication. Why the heck would you spend that kind of coin for 20hp? Use that money towards the price of a new car and trade yours in.

[gofastnow]

Originally Posted by chrisnetcom

I didn't say that. I asked, 'is it worth the price of a new engine'.

YOUR WALLET is the complication. Why the heck would you spend that kind of coin for 20hp? Use that money towards the price of a new car and trade yours in.

I appreciate that your actually are posting and trying to help. Thx

but if you look above, everybody have almost written the same....buy the other car.

guys if you can't answer my question, please dont answer it.

I didn't ask you to give me financial advice.

[chrisnetcom]

Originally Posted by gofastnow

I appreciate that your actually are posting and trying to help. Thx

but if you look above, everybody have almost written the same....buy the other car.

guys if you can't answer my question, please dont answer it.

I didn't ask you to give me financial advice.

It sounds like everybody else has the correct answer and you don't seem to understand or want to accept it. You came into this forum asking for advise on what's involved. I, and others, gave it to you. Let's break it down:

1. 5-10k or possibly more (us dollars) for new engine, parts, labor, etc for 20hp. With NO warranty most likely.
2. If you bring your car to a shop for service, you have to tell them about that swap because of part changes and ECU and other differences.
3. If you ever try to sell the car, you would have to explain this to the potential buyer, who might not appreciate what you are trying to do. Good luck selling it.
4. Insurance will more than likely not cover the new engine and parts if you wreck it because it is not OEM.

Does that really seem worth it for 20hp?

I'm not trying to be a dick, but you can't expect us not to try to save you that kind of money and give you 'financial advise' when you ask us something that quite frankly, seems outrageous to most of us.

Please just think this over again.

[F32Fleet]

Originally Posted by gofastnow

Hi there

As you guys now there is 2 different E90 320i's (for the people in the states, yes bmw actually makes those 4 bangers .....

1. Bmw E90 320i multipoint 150hp motorcode: N46B20
2. Bmw E90 320i Direct injection 170hp motorcode: N46B20.

Yes they have the same engine, but the direct injection in the second 320i gives +20 hp :O

As you guys can guess i have the 150 hp version. If my engine suddenly blows up one day :P can I then put the 170 hp version engine in instead of the 150 hp......


What does this require? is it possible.....which parts do i have to change and etc if i buy the 170 hp engine

Hope you guys can help me out


and please dont: "actually it's cheaper for you to just upgrade and bla bla.."

My guess:
New cylinder head,
High pressure fuel delivery system (HPFP, etc etc)
Injectors themselves.
Wiring harness
Computer update.
Valve train maybe set up differently.

Honestly, the best bet would maybe to look for a supercharger or turbo add-on.

Visit Realoem.com for the parts.

[BMWHersch]

Originally Posted by gofastnow

Hi there

As you guys now there is 2 different E90 320i's (for the people in the states, yes bmw actually makes those 4 bangers .....

1. Bmw E90 320i multipoint 150hp motorcode: N46B20
2. Bmw E90 320i Direct injection 170hp motorcode: N46B20.

Yes they have the same engine, but the direct injection in the second 320i gives +20 hp :O

As you guys can guess i have the 150 hp version. If my engine suddenly blows up one day :P can I then put the 170 hp version engine in instead of the 150 hp......


What does this require? is it possible.....which parts do i have to change and etc if i buy the 170 hp engine

Hope you guys can help me out


and please dont: "actually it's cheaper for you to just upgrade and bla bla.."

Hi I would recommend a stand alone ECU, custom wiring harness and instrument cluster all can be had as a package deal. Then the engine go for the best get the P45B20 race engine. Its available and a lot of fun.

[jgoens]

If your engine blows up actually it's better for you to just upgrade to a 335...blah blah blah

[techwhiz]

Originally Posted by BMWHersch

Hi I would recommend a stand alone ECU, custom wiring harness and instrument cluster all can be had as a package deal. Then the engine go for the best get the P45B20 race engine. Its available and a lot of fun.

Why are you posting in a 5 year old thread?

[jgoens]

Originally Posted by techwhiz

Why are you posting in a 5 year old thread?

[335NJ]

5 years later, I kind of doubt OP is still sitting there scratching his head on how to make this work.

[BMWHersch]

Originally Posted by techwhiz

Why are you posting in a 5 year old thread?

Better late than never.
[u2b]https://youtu.be/UqkJstRAR0Y[/u2b]
P45/N45B20
Type: Four-Cylinder In-line

Capacity: 1,999 cc

Bore x stroke: 86 x 86 mm

Compression: 11 : 1

Max. Output: approx. 275 bhp at approx. 8,300 rpm (as per regulations)

Max. Torque: approx. 242 Nm at approx. 7,250 rpm (as per regulations)

Max. Engine speed: 8,500 rpm (as per regulations)

Cylinder Block: Aluminum Cylinder Block Construction with “bed plate” lower section

Crankshaft: Steel Crankshaft With Reduced Bearing Diameters

Pistons: Forged Skirt Pistons

Conrods: High-performance Steel

Cylinder Head: Aluminum DOHC (double overhead camshaft) construction;
four valves per cylinder

Valve Train: Two Overhead Chain-driven Camshafts;
Valve Actuation Via Rocker Arms

Intake System: Single-throttle Valve (64 mm, as per regulations) air box made of CFRP Carbon Fiber with load change-optimized ram tubes

Exhaust System: High-performance Header, Silencer And Catalytic Converter

Fuel System: Single-cylinder Multipoint Injection With One Injection Valve Per Cylinder;
Injection Pressure 5.0 Bar

Lubrication: Wet Sump Lubrication With Optimized Oil Sump/Oil Suction System

Cooling: Water/Air Cooler And Oil/Water Heat Exchanger

Flywheel: Steel, Weight-optimized To 4 kg

Fuel: Standard Fuel, Super Plus Unleaded


Engine Management: BMW Motorsport ECU404 with two high-performance microprocessors;
Individual Cylinder Injection And Ignition;
Pit Speed Limiter Function, Quick-shift Function;
Engine Data Memory System

Energy Management: Electric Energy Management And Monitoring With BMW Motorsport POWER400 control unit, networking of all sensors and actuators using a bus system

Cable Harness: Weight-optimized

Ignition Coil: Four High-performance Pencil Coils With Integrated Ignition Drivers

Spark Plugs: NGK high-performance spark plugs

Cockpit: Programmable LCD display with integrated indicators

Steering Wheel: Quick-release multifunction steering wheel with integrated display control


The successor to this P45/N45B20 4 cylinder engine is the P13B16 4 cylinder turbo engine from BMW AG Motorsport producing 325HP and 420 NM of Torque. This was used in the E90 320 TC.