NA to B230FT swap-worth it?

BarteXtreme · Dec 28th, 2018, 19:08

Hey. What's up.

So I've bought a 940 recently and the plan for it was to swap the B230FB which is in it currently for a B230FT. The only plan for it is to be a amateur drift car. I had to do some work to the engine, already welded the diff and cut the springs so it's enough for me for the winter.
But during the spring I wanted to swap the engine for a B230FT as I mentioned, and modify the engine to get a bit over 200 WHP. After some research I found out that I would also have to swap the transmission since my M47 may brake with that amount of power. The price of a used B230FT is also a bit more than I imagined.

So my question is, how much trouble is it to swap those engines?
What else would I have to change?
Is here anyone who's done that in his car who I could bother with some questions related to this?

classicswede · Dec 28th, 2018, 20:09

If you only had a B230F I would say go with the swat to a B230FT or FK but the FB has advantages.

The FB has a better flowing 531 cylinder head, it also has a reasonable cam with the VX3

In your case adding a Turbo to what you have is likely to be a better prospect. You will have to limit the amount of boost unless you open the engine and machine the pistons down a little or open teh combustion chambers

You can break the M47 with the power you have if you try hard enough

TonyS9 · Dec 30th, 2018, 13:23

The M47 should be fine with 200bhp, I'm running a B230FT at about that in my 360, but not drifting. In the 360 the drifters tend to break the diff output flanges.

Just make sure you have the Turbo petrol/diesel clutch, might be a different one for NA.

You also need to consider the Engine MGT. Do you know what you have now? The B230FT typically uses LH2.4 + BOSH EZK. You need the right flywheel with tbe EZK ignition pattern. I guess that it is already the right one, but you need to check.

Additional boost should get you to 200BHP near enough, but it is getting weak mixture above 13PSI or so, so maybe need bigger injectors or custom management.

You should have the option to use the M90 gearbox if you are really worried, not sure what other parts you might need, but you will probably find it just as cheap to buy a full 940 turbo (or classis etc) with the B230FT and M90.

Although you are really getting to the point of just finding a decent 940 HPT/LPT and selling yours.

BarteXtreme · Jan 6th, 2019, 12:36

How about the B5254T?

I just got a really good offer on a I6 2.5T B5254T with complete wiring for around 350 euros it's running, got about 160k km
What do you guys think about this solution? Will the m90 gearbox fit?
What would I have to change on the car with such a setup?

classicswede · Jan 6th, 2019, 14:25

Massive conversion. Bank on spending at least 2000 Euro on parts to make it fit. You need a lot of parts from a 960 and then modify them for the 5 cylinders

BarteXtreme · Jan 6th, 2019, 15:19

What parts do you mean?
My good friend is a fabricator and he would make all the mounts etc for me.
How about the m90? Would it fit without an adapter?

TonyS9 · Jan 6th, 2019, 17:59

Th B230FT is the last engine you will ever need. Its strong enough for 1000bhp (very minor mods needed), just matter of fuel and air.. and cooling. Very reliable.

I've seen a few fit the 5cyl in the 300 series and they always seem to break.

Dec 28th, 2018, 19:08	#1
BarteXtreme Junior Member Last Online: Mar 30th, 2020 17:11 Join Date: Nov 2018 Location: Village in Poland	NA to B230FT swap-worth it? Hey. What's up. So I've bought a 940 recently and the plan for it was to swap the B230FB which is in it currently for a B230FT. The only plan for it is to be a amateur drift car. I had to do some work to the engine, already welded the diff and cut the springs so it's enough for me for the winter. But during the spring I wanted to swap the engine for a B230FT as I mentioned, and modify the engine to get a bit over 200 WHP. After some research I found out that I would also have to swap the transmission since my M47 may brake with that amount of power. The price of a used B230FT is also a bit more than I imagined. So my question is, how much trouble is it to swap those engines? What else would I have to change? Is here anyone who's done that in his car who I could bother with some questions related to this?

Dec 28th, 2018, 20:09	#2
classicswede Trader Volvo in my veins Last Online: Today 08:21 Join Date: Dec 2004 Location: Anglesey	If you only had a B230F I would say go with the swat to a B230FT or FK but the FB has advantages. The FB has a better flowing 531 cylinder head, it also has a reasonable cam with the VX3 In your case adding a Turbo to what you have is likely to be a better prospect. You will have to limit the amount of boost unless you open the engine and machine the pistons down a little or open teh combustion chambers You can break the M47 with the power you have if you try hard enough __________________ http://www.classicswede.org www.classicswede.co.uk

Jan 6th, 2019, 14:25	#5
classicswede Trader Volvo in my veins Last Online: Today 08:21 Join Date: Dec 2004 Location: Anglesey	Massive conversion. Bank on spending at least 2000 Euro on parts to make it fit. You need a lot of parts from a 960 and then modify them for the 5 cylinders __________________ http://www.classicswede.org www.classicswede.co.uk

Dec 30th, 2018, 13:23	#3
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	The M47 should be fine with 200bhp, I'm running a B230FT at about that in my 360, but not drifting. In the 360 the drifters tend to break the diff output flanges. Just make sure you have the Turbo petrol/diesel clutch, might be a different one for NA. You also need to consider the Engine MGT. Do you know what you have now? The B230FT typically uses LH2.4 + BOSH EZK. You need the right flywheel with tbe EZK ignition pattern. I guess that it is already the right one, but you need to check. Additional boost should get you to 200BHP near enough, but it is getting weak mixture above 13PSI or so, so maybe need bigger injectors or custom management. You should have the option to use the M90 gearbox if you are really worried, not sure what other parts you might need, but you will probably find it just as cheap to buy a full 940 turbo (or classis etc) with the B230FT and M90. Although you are really getting to the point of just finding a decent 940 HPT/LPT and selling yours.

Jan 6th, 2019, 12:36	#4
BarteXtreme Junior Member Last Online: Mar 30th, 2020 17:11 Join Date: Nov 2018 Location: Village in Poland	How about the B5254T? I just got a really good offer on a I6 2.5T B5254T with complete wiring for around 350 euros it's running, got about 160k km What do you guys think about this solution? Will the m90 gearbox fit? What would I have to change on the car with such a setup?

Jan 6th, 2019, 15:19	#6
BarteXtreme Junior Member Last Online: Mar 30th, 2020 17:11 Join Date: Nov 2018 Location: Village in Poland	What parts do you mean? My good friend is a fabricator and he would make all the mounts etc for me. How about the m90? Would it fit without an adapter?

Jan 6th, 2019, 17:59	#7
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	Th B230FT is the last engine you will ever need. Its strong enough for 1000bhp (very minor mods needed), just matter of fuel and air.. and cooling. Very reliable. I've seen a few fit the 5cyl in the 300 series and they always seem to break.

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