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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 07-27-2013, 04:49 PM   #101
Rob43
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I'll start by saying I don't know.

I'd remove one to see if it's a "dead end" bolt hole, or does that hole go through & into the exhaust. If it's a dead end hole & goes nowhere, well then remove them. If it does go through, cap them with an Allen Head Screw Plug so it's flush when it's screwed in.
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Old 07-27-2013, 05:48 PM   #102
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Quote:
Originally Posted by Rob43 View Post
I'll start by saying I don't know.

I'd remove one to see if it's a "dead end" bolt hole, or does that hole go through & into the exhaust. If it's a dead end hole & goes nowhere, well then remove them. If it does go through, cap them with an Allen Head Screw Plug so it's flush when it's screwed in.
Thanks for the reply my friend..
There are 2 holes in every pipe (6) and each pipe has only 1 bolt, same at all 6..
I was thinking of doing what you suggest.. but decided to ask first if somebody knows..
I will take pics tomorrow and update the thread..
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Old 07-28-2013, 04:46 AM   #103
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Some better pics..


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Old 07-28-2013, 08:45 AM   #104
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Quote:
Originally Posted by Rob43 View Post
I'll start by saying I don't know.

I'd remove one to see if it's a "dead end" bolt hole, or does that hole go through & into the exhaust. If it's a dead end hole & goes nowhere, well then remove them. If it does go through, cap them with an Allen Head Screw Plug so it's flush when it's screwed in.
Just removed one and it's not a "dead end" bolt.. you can see the inside of the exhaust..
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Old 07-28-2013, 09:58 AM   #105
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My car is LHD.. BUT the engine i have came from a UK RHD 330Ci..
So my OEM RHD headers right know look like these..
http://bmwfans.info/parts/catalog/E4...with_catalyst/ which means that i have 8 studs (RHD).. instead of 12 (LHD) per flange..
Should i join up the flanges of the E36 M3 headers? Or will i be ok if i put it as it is? Don't want to go there twice, i don't want to mess with exhaust leak..
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Old 07-31-2013, 09:19 AM   #106
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I've fitted the s50 headers to my M54b30 engine, they fitted with very little modification. I will provide full details of what I did if anyone would like to do the same. Just very busy at the moment.

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still waiting...
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Old 07-31-2013, 01:13 PM   #107
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No S50 headers for me..

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I ended up putting the M52 headers cause the S50 (M3 E36) needed alot of modifications to fit..
While test fitment.. the 6th cyl pipe was touching the gearbox, the 3rd was touching the engine block and of course it needed cut/weld at the end, to mate with the OEM M54 cat back exhaust..
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Old 08-04-2013, 07:44 AM   #108
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M52 headers to M54

M52 Headers with magnaflow 200 cell cats (no cell), oem resonator and custom muffler..
I will make a video when i find some free time..





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Old 08-05-2013, 03:10 AM   #109
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what size primary and secondary OD's?
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Old 08-06-2013, 01:55 PM   #110
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OEM M52 headers..

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what size primary and secondary OD's?
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Originally Posted by zaharias View Post
Primary is where the pipes start just after the flange that bolts on the head?
If yes.. i think it was around 40+ mm OD.. i will see if i can measure and tell you exactly..
After the primary it's all the way dual 2" (51mm) OD..
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Old 08-06-2013, 02:18 PM   #111
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Old 08-07-2013, 04:09 AM   #112
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Primary is where the pipes start just after the flange that bolts on the head?
If yes.. i think it was around 40+ mm OD.. i will see if i can measure and tell you exactly..
After the primary it's all the way dual 2" (51mm) OD..
yes, the OD after the flange, if you measure do it on the straight part not at a bend as it always a little smaller on the bend
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Old 08-12-2013, 11:28 AM   #113
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Old 08-23-2013, 12:04 PM   #114
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Euro S50B32 Headers on M52TU/M54 Engine

Finished the install of the BMP E36 shorty style headers last night. They don't fit quite like stock, and so my down pipe/merge has an exhaust leak, and it was a little tricky getting them onto the head studs.

On the plus side, the low-rpm bog I was getting with the S52 headers is gone, and it should be a good longer tube solution for the E46 non-M.

The downside is that they cost $500, don't fit as well as you'd expect at that price, and still need custom down pipes.


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Old 08-25-2013, 02:16 PM   #115
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Old 09-04-2013, 10:14 PM   #116
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headers for 330ci (RHD)

I'm thinking about buying these headers:

http://www.ebay.com/itm/92-99-BMW-32...e0ff10&vxp=mtr

or these ones:

http://www.ebay.com/itm/200935867692...84.m1423.l2649

but I've heard they both fit into an e46 330ci (RHD)
can someone help me with any details in regards to these headers? I would really appreciate it.
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Old 09-25-2013, 01:10 PM   #117
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Not sure about RHD, they both should bolt up to the head, just a matter of what you need to do from there.

Both will likely require custom downpipes.

Last edited by murph1379; 09-25-2013 at 01:11 PM.
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Old 10-24-2013, 06:00 AM   #118
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My first post here. I had to register because this is one of the only places where I found something about S50 headers on M54 engine. I'm changing the engine in my LHD E36 race car from M50 to M54. I already have the M54B30 engine and thinking now about the headers. I have a set of S50 headers, but they do not fit nicely with the engine block. Cylinder #1 pipe hits the engine block even though I use a 10mm spacer between header flange and cylinder head.

Does anyone have more details how the S50 headers should be fitted to M54?
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Old 10-27-2013, 01:44 PM   #119
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Tried with another set of headers and same problem exists. I tried also with 5-speed ZF transmission used in e36 328i/M3 (Euro). Pipe #6 hits the transmission. It should fit with a 0.4-0.5" thick spacer and two gaskets.
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Old 10-27-2013, 01:52 PM   #120
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That's why i went with the M52 headers at my 330Ci..

I believe you can make them fit cause the engine is down and you can work it better (spacer)..
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