Why not M52TUB28 ?

[Rob_farmer]

Guys,

Are there any reason other than VANOS problems, why people don`t fit those updated engines into e30? Is it maybe more complicated compared to M52B28?

[rich318i]

think its due to emissions also pre and after cat lambda sensors

But like to know my self why!!!

[DanThe]

The main reason is down to management, can bus and fly by wire mainly, there are people that know how to flash this out of the ECU but its still a big secret and as such they charge fortunes for it, £800 odd.
The other reason is the head/gas flow design, when they designed the engines they were not interested in them making more power, just reducing emissions, due to this the ports are much smaller and IMO give less scope for power increases.
As an example I rebuilt the bottom end of a 3.0 M54 into a single vanos 2.8 engine, using the standard 2.8 cams/ECU and it made more power and torque than the M54B30 engine is supposed to have

[LondonTom]

As an example I rebuilt the bottom end of a 3.0 M54 into a single vanos 2.8 engine, using the standard 2.8 cams/ECU and it made more power and torque than the M54B30 engine is supposed to have

Hi Dan,

What numbers should a well put together m52b30 make? I'm trying to figure whether to go this route or bite the bullet and go s5*...

[Andy325i]

Subscribed Dan guessing an M54B30 would have the same issues as the M54B28tu then? (Management and head flow)?

[DanThe]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

[LondonTom]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

Thanks Dan - healthy amount of torque.

[DanThe]

Ive not long built another, same spec as mine - http://www.e30zone.net/modules.php?name ... sc&start=0

[Nas80]

there is a guy advertising on ebay that can flash out the canbus crap for £200 quid.

http://item.mobileweb.ebay.co.uk/viewit ... cmd=VIDESC

[DanThe]

there is a guy advertising on ebay that can flash out the canbus crap for £200 quid.

http://item.mobileweb.ebay.co.uk/viewit ... cmd=VIDESC

Good find!

[rich318i]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

Did Alpina spec M52's just use the standard M52 cams then??

They Real S52 CAMS or made in CHINA copies ?? LOL

236HP without a remap?????

[AndyZippy]

Mine's the one Dan mentioned above - I'll post up once i have her dyno'd, though might be a few weeks. It is a total beast though, the torque is like a wall!!

[rich318i]

Mine's the one Dan mentioned above - I'll post up once i have her dyno'd, though might be a few weeks. It is a total beast though, the torque is like a wall!!

standard or remapped?? what are the mods you got for getting 236HP ??? love to know!!!

[DanThe]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

Did Alpina spec M52's just use the standard M52 cams then??

They Real S52 CAMS or made in CHINA copies ?? LOL

236HP without a remap?????

Whats alpina got to do with it?

Yes, 236hp and 239lbft with a standard 2.8 ECU, 6500rpm rev limit

[maggspower]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

Did Alpina spec M52's just use the standard M52 cams then??

They Real S52 CAMS or made in CHINA copies ?? LOL

236HP without a remap?????

Whats alpina got to do with it?

Yes, 236hp and 239lbft with a standard 2.8 ECU, 6500rpm rev limit

Some nice numbers there Dan. A few more to come if remapped too, no doubt.

Do the AFRs stay in the good zone with the standard map?

[DanThe]

Yeah ive been saying it for ages but I will get it mapped at some point

The M52 management is very adaptive, you can run a 2.5 on 2.8 ecu/injectors with no issues too

[sunnysr]

So how come loads of these 328s seem to have head work done or had failing head gaskets is it an actual common problem with them or have i just seen some unlucky ones for sale .

also the 323 motor is a 2.5 version of the 2.8 how come people dont fit these instead of the m50 is it down to the same problem as the M52TUB28 with the can bus crap

[rich318i]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot better, just not got round to dynoing it again

The m52tu is pretty much the same engine as the m54

Did Alpina spec M52's just use the standard M52 cams then??

They Real S52 CAMS or made in CHINA copies ?? LOL

236HP without a remap?????

Whats alpina got to do with it?

Yes, 236hp and 239lbft with a standard 2.8 ECU, 6500rpm rev limit

others said your alpina 3.0L did 236hp and i be lucky to get them figs with my S52 cams and all my mods.

Even your self said dan the 250-260Hp wasnt possible with the cams so now going by what your saying now it is!!!

[maggspower]

So how come loads of these 328s seem to have head work done or had failing head gaskets is it an actual common problem with them or have i just seen some unlucky ones for sale .

also the 323 motor is a 2.5 version of the 2.8 how come people dont fit these instead of the m50 is it down to the same problem as the M52TUB28 with the can bus crap

The 323i is fitted with a load of detuning stuff, throttle, manifold etc. Fitting the 2.5 gubbins makes it go like a...er... 2.5

A bit like the m50 manifold releases the latent power in a 2.8.

[Rob_farmer]

Mine did 236hp and 239lbft
Ive since fitted S52 cams and it goes a hell of a lot bette

How much in total it cost you?

[Rob_farmer]

It is a total beast though, the torque is like a wall!!

Do you have build thread? Very interested