m54b22 to b25 swap

[eau-rouge]

hey guysbeen doing some research and cant find the ultimate answer, thus this threadquestion is, is it a direct swap? same wiring, same exhaust, same gb, same ecu, all same lah..what i need to do is just buy b25 complete engine only?thanks

 

[dominic]

Fyi

hey guys

been doing some research and cant find the ultimate answer, thus this thread

question is, is it a direct swap? same wiring, same exhaust, same gb, same ecu, all same lah..

what i need to do is just buy b25 complete engine only?

thanks

Hi Bro,
Same your money...
add up supercharger..
will be satisfy with the hp gain and can maintain yr current engine longer.
but dont go for off market china or taiwan brand. go for ASA or ESS...
Tks.

 

[Lionel_Koh]

U can direct swap but u r not fully utilized the potential of the engine ...... Basically m54B22 and M54B25 having totally different hardware and software as well from intake,MAF, ECU mapping, torque converted etc ........

My advice is if wanted convert , better do a complete conversion or as mentioned by dominic , supercharges ur M54b22 is another option ......

If u ask me , if possible sell ur existing car and buy another with M54b25 instead cos the money u spend is about the same but u save lot of headache for the conversion .......

Good luck ....

 

[astroboy]

What about M54B30? By just retaining the engine block of M54B22, you retain your road tax price.. that's a saving of what.. RM1.5k a year?

 

[bazet]

Im using b30 after my b22 gave away months ago. The power is there but so smooth. Maybe due to b22 torque converter. Im saving for manual gearbox to complete the conversion.

 

[eau-rouge]

Im using b30 after my b22 gave away months ago. The power is there but so smooth. Maybe due to b22 torque converter. Im saving for manual gearbox to complete the conversion.

What about M54B30? By just retaining the engine block of M54B22, you retain your road tax price.. that's a saving of what.. RM1.5k a year?

mind to share your experience?

 

[eau-rouge]

Hi Bro,
Same your money...
add up supercharger..
will be satisfy with the hp gain and can maintain yr current engine longer.
but dont go for off market china or taiwan brand. go for ASA or ESS...
Tks.

U can direct swap but u r not fully utilized the potential of the engine ...... Basically m54B22 and M54B25 having totally different hardware and software as well from intake,MAF, ECU mapping, torque converted etc ........

My advice is if wanted convert , better do a complete conversion or as mentioned by dominic , supercharges ur M54b22 is another option ......

If u ask me , if possible sell ur existing car and buy another with M54b25 instead cos the money u spend is about the same but u save lot of headache for the conversion .......

Good luck ....

me b22 is eating oil..hence the need to change

 

[dominic]

Power

Im using b30 after my b22 gave away months ago. The power is there but so smooth. Maybe due to b22 torque converter. Im saving for manual gearbox to complete the conversion.

Why Ya must used manual gearbox.
currently playing with my shiftronic gearbox no issues
mine is 528 with complete set asa supercharger stage 2.
being driving for almost 4 yrs ya..
shock than manual le...
tks
fyi

 

[dominic]

Engine Oil

me b22 is eating oil..hence the need to change

Hello Bro,
Try used this engine Oil..
Brand : XADO.
may be can save your engine ya.
No harm to try.

U can get it at Autopax Glemarie area.

Tks.

 

[Lionel_Koh]

What about M54B30? By just retaining the engine block of M54B22, you retain your road tax price.. that's a saving of what.. RM1.5k a year?

B22 block cant plug n play for b30...... different bored size ...... if bore to fit b30 , the distance will be too close for d cylinder. .... not advisable......

 

[Lionel_Koh]

Why Ya must used manual gearbox.
currently playing with my shiftronic gearbox no issues
mine is 528 with complete set asa supercharger stage 2.
being driving for almost 4 yrs ya..
shock than manual le...
tks
fyi

Ur asa is which model? Skplus? Sk1 or sk2 ?

Stage 2 run on how many psi?

How many hp and torque gain compared with stock?

Mind sharing ?

 

[bazet]

Eyeing for this , http://www.esstuning.com/products/MS43-Steptronic-Transmission-Software.html

In eeconomy mode my shift is sluggish, but in sports mode it behave like it should be....but at 6500 shift...the torque from b30 enough to made me chill down

 

[astroboy]

B22 block cant plug n play for b30...... different bored size ...... if bore to fit b30 , the distance will be too close for d cylinder. .... not advisable......

You are right.. 4mm different in bore size.. but B25 and B30 same bore size.. hehe... now you talking! :love:

Time to shop for an E46 M54B25.. :4:

 

[Lionel_Koh]

You are right.. 4mm different in bore size.. but B25 and B30 same bore size.. hehe... now you talking! :love:

Time to shop for an E46 M54B25.. :4:

Yes.....b25, b28 and b30 sharing d same bore size........

 

[antiquer]

Hi guys..

Thinking of swapping my m54 b25 to b30. I know the best way is to get a halfcut n put everything in. That will cost 10-15k. But im in kind of urgent n looking for cheaper way (enjin kosong). Any advice on that? Im pretty sure I wont get 230hp from that... so what other parts should I change to optimize the hp? Or maybe can get the 230hp? What part that cannot share between the two engines?
Pls advice..

Thanks

 

[Lionel_Koh]

Hi guys..

Thinking of swapping my m54 b25 to b30. I know the best way is to get a halfcut n put everything in. That will cost 10-15k. But im in kind of urgent n looking for cheaper way (enjin kosong). Any advice on that? Im pretty sure I wont get 230hp from that... so what other parts should I change to optimize the hp? Or maybe can get the 230hp? What part that cannot share between the two engines?
Pls advice..

Thanks

Pls refer to page 1 and u shld be able to get d answer....

 

[astroboy]

M54B25 vs M54B30

I did a quick check.. and found these differences..

~ Torque converter
~ Intake cam
~ Crank shaft
~ Piston
~ Intake manifold
~ Injector
~ Ignition coil

Possible differences which I didn't check..
~ ECU

Yet to find out.. anyone know can also share..
~ Rear diff?

 

[antiquer]

M54B25 vs M54B30

I did a quick check.. and found these differences..

~ Torque converter
~ Intake cam
~ Crank shaft
~ Piston
~ Intake manifold
~ Injector
~ Ignition coil

Possible differences which I didn't check..
~ ECU

Yet to find out.. anyone know can also share..
~ Rear diff?

Thanks ab for the enlightment..
From the items u post I assumed that both engines share same ac compressor, water pump, alternator, intake airbox, brake system, wirings...?

 

[slyder]

I have seen a m54b22 to m54b30 conversion before.
Donor car was a 530 e39
it was transplanted to a 320 e46. Meters from the e46 were all reused back.

 

[seancsy]

Everyone who has swapped engines went for upgrade, and I think I may be the only one who has opted for a downgrade.

My E39 530i suffered overheating and mechanic suspected engine block may have cracked because engine oil flooded the cooling system. On the advice of my mechanic, I decided to swap the M54B30 for a M54B25. The mechanic did only the engine swap.

I have been driving the car for one week now and I am facing several issues:

1) The car feels sluggish (of course there is 40hp less) but I have driven my brother's E60 525i with M54B25 too and it's definitely more powerful.
2) The gear shifts are also less responsive when I stomp on the accelerator. The responsive nature of a BMW automatic gearbox has gone.
3) The engine vibrates at certain combination of RPM and car speed. I have yet to pinpoint and emulate the problem.

I told my mechanic that there are stuff to be re-programmed from what I gather from several forums. He says these are beyond his capabilities and I am now stucked.

Hope someone can advice where I can get the DME or even the EGS re-programmed to suit the M54B25 engine.

Thank you very much.

Regards,
Chung