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      06-02-2016, 03:59 AM   #1
Vagsfjord
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EU model E91 325i to 330i conversion

I'm doing a conversion from n52b25 to n52b30 and I see that the automatic transmissions have different part numbers but are the same ZF model GA6HP19Z. I wonder what the difference is and if I actually need to replace the transmission.

http://www.realoem.com/bmw/en/partxref?q=24007547899
http://www.realoem.com/bmw/en/partxref?q=24007547901

In advance thanks for any qualified answers!

EDIT:
I found this ZF pdf that shows all the different part numbers.
http://www.zf.com/corporate/media/zf...nsmissions.pdf

Last edited by Vagsfjord; 06-02-2016 at 04:11 AM..
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      06-02-2016, 04:11 AM   #2
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Quote:
Originally Posted by Vagsfjord
I'm doing a conversion from n52b25 to n52b30 and I see that the automatic transmissions have different part numbers but are the same ZF model GA6HP19Z. I wonder what the difference is and if I actually need to replace the transmission.

http://www.realoem.com/bmw/en/partxref?q=24007547899
http://www.realoem.com/bmw/en/partxref?q=24007547901

In advance thanks for any qualified answers!
Difference is the toque converter and software. Don't worry about it. Changes are minor.

I've put over 30,000 miles on mine since upgrading the power output .

I've thought about testing the high output software but never felt the need.
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      06-02-2016, 10:34 PM   #3
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Quote:
Originally Posted by Vagsfjord View Post
I'm doing a conversion from n52b25 to n52b30
Hi Vagsfjord.
I have similar desire to undertake the same engine conversion from EU 2.5 to 3.0.
My car is Australia version, auto E92 325i.
Subscribed to this thread hoping you have success.
John
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      06-03-2016, 01:24 AM   #4
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Quote:
Originally Posted by E92 N52 325i Msport View Post
Hi Vagsfjord.
I have similar desire to undertake the same engine conversion from EU 2.5 to 3.0.
My car is Australia version, auto E92 325i.
Subscribed to this thread hoping you have success.
John
Cool! Have you made some concrete plans?

I will enjoy getting rid of this oil thirsty bastard b25. After my engine ate a swirl flap it sounds not so healty. Right now I'm waiting for a kind of preapproval from the The Norwegian Public Roads Administration to make the conversion legal. The b30 is really the closest you can get a plug and play engine swap. As far as I can tell I actually only need to swap the engine and upgrade the cooling fan from 400W to 600W. If you car was delivered with original towbar/hitch you should already have the 600W fan. The b30 is a light engine and if my information is correct, only 10kg heavier. No need for brake upgrade and that will make the converted 325i lighter than the factory 330i. I found a local tuning company that will remap my msv70 dme.
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      06-03-2016, 04:15 AM   #5
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Still searching for someone who has undertaken the swap. The engine from a 2008 to 2009 530i or 130i would be the ideal donor.
Is it simply a plug and play with the wiring loom and mechanical attachments? I expect a dme flash is needed.
I need to check with the government authorities for approval re increased capacity, and possibly bigger brakes? That could be a deal breaker if required.
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      06-03-2016, 04:49 AM   #6
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Quote:
Originally Posted by E92 N52 325i Msport View Post
Still searching for someone who has undertaken the swap. The engine from a 2008 to 2009 530i or 130i would be the ideal donor.
Is it simply a plug and play with the wiring loom and mechanical attachments? I expect a dme flash is needed.
I need to check with the government authorities for approval re increased capacity, and possibly bigger brakes? That could be a deal breaker if required.
Well.. 2008-2009 most likely is a N53-B30 and that is anything but plug and play. Donor engine N52B30 from E90/E91 has the same wiring loom when I compare parts catalog. Yeah check with the authorities before just to be sure it's legal. Insurance probably won't cover damage after accidents if the engine swap isn't approved. Breakes shouldn't be an issue when the increased weight only is about 10kg.
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      06-03-2016, 05:46 AM   #7
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Quote:
Originally Posted by E92 N52 325i Msport View Post
Still searching for someone who has undertaken the swap. The engine from a 2008 to 2009 530i or 130i would be the ideal donor.
Is it simply a plug and play with the wiring loom and mechanical attachments? I expect a dme flash is needed.
I need to check with the government authorities for approval re increased capacity, and possibly bigger brakes? That could be a deal breaker if required.

Brakes, Not sure about the E92 but there are a number of threads where people have swapped rotors and carriers from the higher HP cars. Parts can be picked up at a junk yard. It's not a big deal but unless you are tracking the car it's probably not worth the effort.
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      06-03-2016, 06:01 AM   #8
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Quote:
Originally Posted by rjahl View Post
Brakes, Not sure about the E92 but there are a number of threads where people have swapped rotors and carriers from the higher HP cars. Parts can be picked up at a junk yard. It's not a big deal but unless you are tracking the car it's probably not worth the effort.
Yeah it's not worth the effort for normal everyday driving.
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      06-25-2016, 02:58 AM   #9
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Getting closer to pulling the trigger on this swap.
Currently my car has the small block 2.5 litre N52B25; 215hp motor, Australian delivered 2012 325i auto.
I have located a suitable donor 3 litre engine from 2009 E89 Z4 with N52B30AF low km 255hp motor, which also had sports auto tranny.
It comes with the 3 litre DISA manifold and engine oil heat exchanger, but no exhaust manifold.

So is this engine swap really going to be as easy as "plug and play" like I am hoping?
Should the car start up and run, reasonably driveable?
..... without throwing any error codes?
Is it even possible that the ecu could "learn" to adapt it's tune to adjust for the higher capacity?
Alternatively, how would I actually go about obtaining a flash tune to update from the 2.5 litre to the 3.0 litre performance? (Shipping of cpu to USA is not a practical option from Australia).
Is the 2.5 litre exhaust on my car going to be restrictive to the 3 litre engine's maximum performance?
.

Last edited by Twoforty; 06-25-2016 at 07:37 AM.. Reason: additional info added.
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      06-25-2016, 04:05 AM   #10
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Both engines should have MSV70 ecu. It would surprise me if no companies in Australia could do this programming of ecu. I have several in my city who tunes BMW ecu. A sport air filter and exhaust would give you about 15hp extra. Just make sure that the engine isn't a n53. Check vin to also make sure engine ecu is MSV70.

Last edited by Vagsfjord; 06-25-2016 at 12:00 PM..
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      06-25-2016, 06:24 AM   #11
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One more thing, to get official approval and write the new engine into the cars registration they most likely must performe a brake test. You might be forced to get bigger calipers, disks and pads from a 330i. If you have sport suspension there are some limitations to how big you can go.
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      06-25-2016, 07:19 AM   #12
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Quote:
Originally Posted by Vagsfjord View Post
Both engines should have MDS70 ecu. It would surprise me if no companies in Australia could do this programming of ecu. I have several in my city who tunes BMW ecu. A sport air filter and exhaust would give you about 15hp extra. Just make sure that the engine isn't a n53. Check vin to also make sure engine ecu is MDS70.
Interesting.....
Thanks for the suggestion.
Just ran a check on the VIN numbers. My car and the donor are both controlled by MSV80!.
Obviously different from yours, but fortunately match each other.
Definitely talking about N52 engines here in Australia.
So are you thinking we could confidently say that I have a plug and play project at hand?
Such that it will start up and be driveable from day 1?

This is the donor engine for transplant. N52B30AF
.
Attached Images
 

Last edited by Twoforty; 06-25-2016 at 08:23 AM.. Reason: pic
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      06-25-2016, 08:28 AM   #13
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N52 is MSV70 or MSV80.. only N53 would be MSD70 or MSD81.

if you are swapping DMEs you need the matching CAS and keys. I would hang on to your old DME to get it reprogrammed, since now your keys won't match your car - and if you need new ones from the dealer, it will be a pain in the ass.
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      06-25-2016, 12:03 PM   #14
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MSV80 can be more of a challenge to reprogram for some tuning companies. First find a shop and then buy the engine is my advice.
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      06-25-2016, 09:08 PM   #15
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I was hoping not to swap computers.

Right now this does not sound like a simple plug and play project.....
but a royal PITA.

Not surprised my mechanic has been hesitant to tackle this project with me.

Last edited by Twoforty; 06-25-2016 at 09:36 PM.. Reason: add
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      06-25-2016, 11:17 PM   #16
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Call some tuning companies and ask about reprogramming MSV80. Don't swap computers.
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      06-26-2016, 01:46 AM   #17
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I don't see how this is an issue for any competent tuner.
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      10-18-2018, 11:52 AM   #18
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Sorry to wake up this old thread Vagsfjord, but I am also installing an N52B30 in my car. Is there any social media I can contact you in? So we can communicate faster, and in norwegian?
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      10-18-2018, 12:11 PM   #19
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Nobody has suggested an LS swap? Really?

I know, the government won't approve.

https://bringatrailer.com/listing/1985-bmw-318i-3/
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      11-15-2018, 01:34 PM   #20
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Did you ever do the swap Vagsfjord?
I live in Oslo aswell and drive a 325i wanting more power
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      11-15-2018, 01:49 PM   #21
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Quote:
Originally Posted by Christian F View Post
Did you ever do the swap Vagsfjord?
I live in Oslo aswell and drive a 325i wanting more power
Yes I did the swap and so did forum member "ledel".
But I haven't had time to reprogram the dme.
So far engine is running fine with 325i n52b25 software.
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      08-27-2020, 07:42 PM   #22
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Quote:
Originally Posted by Vagsfjord View Post
Yes I did the swap and so did forum member "ledel".
But I haven't had time to reprogram the dme.
So far engine is running fine with 325i n52b25 software.
Hi Vagsfjord & ledel was this as straight forward as purely replacing the engine, exhaust, cooling fan, and flashing the dme?

Did you find anything else needed to be done?
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