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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 04-09-2009, 01:18 PM
-Matt-'s Avatar
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M50 intake manifold?

I have searched but couldn't get a straight answer...

Can I fit an M50 intake manifold (and big bore throttle body) to my single vanos (99) 528?

Has anyone done this yet?

I know there are kits available for the 328 (and US M3). These include everything you need to do the conversion. If there is a kit available for e39 then I would probably do this mod. I'm not keen to try without the kit. Would a kit designed for an e36 328 work?

Last edited by -Matt-; 04-09-2009 at 01:36 PM.
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  #2  
Old 04-09-2009, 02:45 PM
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Bump

I thought someone on here would know about this...

Here is a link giving more detail about what I want to do.

http://www.bmconversions.co.uk/home/...d_details.html

Unfortunately this relates to the 328 - not sure if it applies to the e39?
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  #3  
Old 04-09-2009, 03:50 PM
supark supark is offline
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if you have a 99 528i, then you have a dual vanos M52TU and therefore unfortunately can't do the M50 manifold mod as far as I understand. The M50 mani mod only applies to the single vanos 97-98 engines
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  #4  
Old 04-09-2009, 04:06 PM
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This is one of the things I needed cleared up...

I'm pretty sure I have an M52B28 (single vanos) not a M52TUB28 (dual vanos). Apparently 99 was the year that they made the switch (at least here in the UK) and mine is an early 99 model.

Looking at the actual vanos unit in my car, it seems to have only one lump, not two!

Last edited by -Matt-; 04-09-2009 at 04:49 PM.
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  #5  
Old 04-09-2009, 04:45 PM
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After a build date of 8/98, BMW switched over to the larger bore intake manifold which you already have. The earlier (pre /98) 528 models used the more restrictive intake manifold also used on my S52-B32 (Certain M52's as well) motor in my M3.

In a nutshell, you can't do the upgrade.
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  #6  
Old 04-09-2009, 10:58 PM
regency regency is offline
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Yes mate it can be done, UK single vanos that is.
I have done mine with great results, you will need to relocate power steering res and modify the passenger side cab air intake as ths fowls the manifold. Well worth doing though.
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  #7  
Old 04-10-2009, 06:30 AM
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Quote:
Originally Posted by regency View Post
Yes mate it can be done, UK single vanos that is.
I have done mine with great results, you will need to relocate power steering res and modify the passenger side cab air intake as ths fowls the manifold. Well worth doing though.
Read up, he has a 99 which means he has the m52TU (dual vanos). Yours is a 96 with a single vanos. So NO, he can't do it since technically he already has the larger IM.
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  #8  
Old 04-10-2009, 06:41 AM
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Quote:
Originally Posted by Vipsa View Post
Read up, he has a 99 which means he has the m52TU (dual vanos). Yours is a 96 with a single vanos. So NO, he can't do it since technically he already has the larger IM.
Exactly!
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  #9  
Old 04-10-2009, 11:08 AM
andyffer andyffer is offline
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Last edited by andyffer; 04-10-2009 at 01:54 PM.
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  #10  
Old 04-13-2009, 08:54 AM
regency regency is offline
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Quote:
Originally Posted by Vipsa View Post
Read up, he has a 99 which means he has the m52TU (dual vanos). Yours is a 96 with a single vanos. So NO, he can't do it since technically he already has the larger IM.
Before we can say for definate we need to dertermine single or double vanos, his car is a UK so it's possibly a single??
Untill then reserve judgement.
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  #11  
Old 04-13-2009, 09:04 AM
franka franka is offline
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Quote:
Originally Posted by supark View Post
if you have a 99 528i, then you have a dual vanos M52TU and therefore unfortunately can't do the M50 manifold mod as far as I understand. The M50 mani mod only applies to the single vanos 97-98 engines
Why would vanos prevent a mechanical swap?
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  #12  
Old 04-13-2009, 09:19 AM
zoevans zoevans is offline
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In September of 98 BMW introduced M52TU. So I would try to check your production date. Mine is stamped on the drivers side door sill. You might try calling the BMW dealer. I've called them before and given them my vin no. and they were able to tell me what engine I had.
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  #13  
Old 04-13-2009, 09:35 AM
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I went and looked at my engine and I think you guys are right - I actually have the dual vanos "TU" model (M52TUB28).



I was getting mixed up with the engine in my 97 328 which was a single vanos M52B28.

I guess this means the swap is a no-go for me (or at least would offer no gains) is this right?
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  #14  
Old 04-13-2009, 10:09 AM
poolman poolman is offline
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You have the double Vanos for sure--now do a valve cover gasket and swap out those old seals for the Besian seals and you'll get what your looking for at a cheaper price---just change out the seals
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  #15  
Old 04-13-2009, 01:04 PM
regency regency is offline
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Yep thats a double vanos, end of argument!
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  #16  
Old 04-13-2009, 04:57 PM
supark supark is offline
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Quote:
Originally Posted by franka View Post
Why would vanos prevent a mechanical swap?
bolt pattern and port shapes are different between M52 and M52TU. M54 intake is typically what M52TU guys go with - but it's not as straightforward as the M50 mani install.

For those looking to do this mod with 97-98 528is, people are seeing as high as 210-215 rwhp with S52 cams, M50 intake manifold and cam/intake specific conforti software, documented by many dyno runs over on BFC. Custom software from turnermotorsport.com is $645, cams can be had for about $250-300, and M50 manifold is $50-75. So about a grand in parts and software for what like 40-50ish hp boost? Pretty sweet - I'm actually pretty happy with my 98 528i having found this out (helps salve the hurt of blowing the engine on my 540i)

Last edited by supark; 04-13-2009 at 05:01 PM.
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  #17  
Old 06-06-2009, 10:46 AM
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http://www.bmconversions.co.uk/home/...d_details.html
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  #18  
Old 06-06-2009, 02:31 PM
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An indy who specializes in BMW enhancement just the other day was talking up the M50 manifold swap and said it would fit the m52TU I asked several times 'are you sure, dual VANOS, 99 52TU?' and he said yes no problem. 'Do it all the time'
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  #19  
Old 06-06-2009, 02:41 PM
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Quoted from the M50maniforld.com web site:

Quote:
suitable for M52B25, M52B28 and S52B32 engines found in the following vehicles: E36 323i, 323is 328i, 328is, usM3 ODBII ('96 onwards) as well as in Z3 E36 2.8, E39 523i, 528i and E38 728i. Not suitable for M52TU engines.
Now can we put this one to bed?
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  #20  
Old 06-18-2009, 04:02 AM
SwapMag1c SwapMag1c is offline
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so, this will not fit the M54?
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  #21  
Old 06-18-2009, 04:32 AM
velvetMonkey velvetMonkey is offline
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if you have an M52, you can use the M50 manifold

if you have an M52TU, use the M54 manifold from a 530i. It will bolt right up, although you will need a throttle body adaptor from turner tuning.

The M54 manifold is less restrictive that the M52TU one, and will do the same thing as M50 manifold on earlier engines. From what I've read, M52tu engines are very different to M52, or more similar to M54 (same head etc...)
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