M44 exhausts manifolds

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sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

M44 exhausts manifolds

Post by sobe_on » Tue 14 May, 2013 09:50

http://www.zroadster.net/forum/viewtopi ... 11&t=37965
Hello~ Mind Zed is RHD 1.9 M44, actually I have checked the manifolds is the same parts number for RHD & LHD even the same as 318is, but I dont understand why the parts number is difference as the U.S version.

In fact, I want to buy the manifolds from schmiedmann but bit sure it is fit for my baby or not, any body help? :bow :bow :bow
http://www.schmiedmann.co.uk/3_series/E ... htm#paging
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2224

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by BladeRunner919 » Tue 14 May, 2013 11:15

sobe_on wrote: In fact, I want to buy the manifolds from schmiedmann but bit sure it is fit for my baby or not, any body help? :bow :bow :bow
http://www.schmiedmann.co.uk/3_series/E ... htm#paging
I'd advise you to contact them direct and ask, then the onus is on them to give you the correct information, rather than finding you have a part you can't use. I don't think there are many owners of US-spec cars on this forum to be able to give you an answer to the differences between US and EU M44 cars and why they have different manifolds.

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markrnorton
Joined: Mon 05 Jan, 2009 13:19
Posts: 841

  Other roadster
Location: Essex

Re: M44 exhausts manifolds

Post by markrnorton » Tue 14 May, 2013 13:16

US spec LHD manifold will not fit a RHD Z3, clashes with steering column
I have had first hand experience of this. thats why i made my own downpipe
Still modifying

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Wed 15 May, 2013 19:34

markrnorton wrote:US spec LHD manifold will not fit a RHD Z3, clashes with steering column
I have had first hand experience of this. thats why i made my own downpipe
wow, dude` thanks for your comment here
in fact, i have check with the seller and he told me that it is fit for EU M44 cars and cannot be fit for US M44.
But the problem I'm afraid is the down pipe, as you can see it is one 4-2-1 instead of the original (4-2)+(2-1).
so my big question now is want to know that should be the same for EU M44 even RHD & LHD?
If yes, i can order ASAP.

After installed that, maybe i'll change into 57mm throttle 7 go for ECU chip and remap :roflmao:
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

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BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2224

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by BladeRunner919 » Wed 15 May, 2013 19:50

BMW list the same part number for European-spec M44 cars regardless of whether they are LHD or RHD. If you use RealOem.com you can confirm this.

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Thu 16 May, 2013 09:49

After checking that and think I need to cut my down pipe for installation.
:shock:
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Mon 20 May, 2013 05:32

sobe_on wrote:After checking that and think I need to cut my down pipe for installation.
:shock:
After discussing with engineering and order the manifold from Schmiedmann already :roflmao:
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Tue 28 May, 2013 07:12

markrnorton wrote:US spec LHD manifold will not fit a RHD Z3, clashes with steering column
I have had first hand experience of this. thats why i made my own downpipe
so, do you think it is fit for EU-RHD Z3 if the seller said the manifold must be fit for EU-LHD Z3?
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Mon 03 Jun, 2013 02:35

Oh...my god!!
The manifold arrived but the #3 pipe clog up the steering column....(no problem for #1, #2, #4)

I have found a garage to reshape for me and the new shape should me like below in purple line:
Image

Any dude have reshape it as above and installed?
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

gookah
Z Register member
Joined: Thu 07 Aug, 2008 10:51
Posts: 2732

  Z3 roadster 2.8

Re: M44 exhausts manifolds

Post by gookah » Mon 03 Jun, 2013 12:03

sobe_on wrote:Oh...my god!!
The manifold arrived but the #3 pipe clog up the steering column....(no problem for #1, #2, #4)

I have found a garage to reshape for me and the new shape should me like below in purple line:
Image

Any dude have reshape it as above and installed?
I would return it and ask them to supply the correct one
The pipes are all supposed to be equal length, reshaping will make one outlet longer and will imbalance the manifold, You could end up with less performance, not more.
Image

Z3 2.8 Progress Journal (Mine)
Z3 1.9 Sport Progress Journal (Wifey's)

I have an element of 'M-styling' on my car, If that's a good enough reason for the manufacturers to adorn a 320 with the M badge, then its certainly a good enough reason for me..

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Mon 03 Jun, 2013 12:21

gookah wrote:
sobe_on wrote:Oh...my god!!
The manifold arrived but the #3 pipe clog up the steering column....(no problem for #1, #2, #4)

I have found a garage to reshape for me and the new shape should me like below in purple line:
Image

Any dude have reshape it as above and installed?
I would return it and ask them to supply the correct one
The pipes are all supposed to be equal length, reshaping will make one outlet longer and will imbalance the manifold, You could end up with less performance, not more.
Yes, this is the only thing I consider :bawl:
But. I think that will be better than the original manifold because it is steel....,you think correct? :puzzle:
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

gookah
Z Register member
Joined: Thu 07 Aug, 2008 10:51
Posts: 2732

  Z3 roadster 2.8

Re: M44 exhausts manifolds

Post by gookah » Mon 03 Jun, 2013 15:00

I am no expert in the design, but personally I would not risk it..
I would think altering this manifold will cause an imbalance, you may also have problems with the new welds and the flow will not be smooth past the new profile. Also the new welds cannot be polished internally where they are.
Stainless is longer lasting, but not if it causes problems because a weld cracks...
I would return them and ask if they do a version that fits correctly.
Image

Z3 2.8 Progress Journal (Mine)
Z3 1.9 Sport Progress Journal (Wifey's)

I have an element of 'M-styling' on my car, If that's a good enough reason for the manufacturers to adorn a 320 with the M badge, then its certainly a good enough reason for me..

sobe_on
Joined: Tue 18 Jan, 2011 07:44
Posts: 157

  Z3 roadster 1.9

Re: M44 exhausts manifolds

Post by sobe_on » Mon 03 Jun, 2013 15:27

In fact, I didn't found a manifold only for RHD, that's why I bet it but finally lose... :head:
Yes, you are right and this is a risk if go for reshape with weld crack.
Image
BMW Aero Side Skirt/rear spoiler & chrome roll bar/ handle
AC schnitzer front/rear bumper splitter,Exhaust,type2 17"
BC coilover/H&R swaybar/wiecher's strut

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