BimmerBrakes SS Headers on E85!

[minmat11]

I finally bit the bullet and just bought me a set of BimmerBrakes SS Headers!

I'm buying a new set of OEM gaskets since I heard the ones that come with headers are not that great. I also got some heat wrap and two sets of spark plug non-foulers for the post cat o2 sensors. Do you guys suggest getting anything else for the install? I'm trying to avoid SES lights, hence the non-foulers. Should I consider another route? Any help will be appreciated!

[Steeler]

I agree on the gaskets that are supplied are not good. Good call on the oem ones.
You will need bolts for the collectors to s-pipe connection and of course gaskets there also.
Put a dab of hi heat silicone on the collector gaskets as I developed a slight leak there even with impacting the nuts.

Chances are you will end up threading the studs out of the head with the frozen on nuts even though the nuts are copper.
I ended up replacing all the nuts and chasing the threads on the studs once the frozen nuts were removed.

Finally, do not overtighten the nuts on reassembly. The recommended torque is around 10-12 ft/lbs I believe.

[minmat11]

Originally Posted by dbarton62

I agree on the gaskets that are supplied are not good. Good call on the oem ones.
You will need bolts for the collectors to s-pipe connection and of course gaskets there also.
Put a dab of hi heat silicone on the collector gaskets as I developed a slight leak there even with impacting the nuts.

Chances are you will end up threading the studs out of the head with the frozen on nuts even though the nuts are copper.
I ended up replacing all the nuts and chasing the threads on the studs once the frozen nuts were removed.

Finally, do not overtighten the nuts on reassembly. The recommended torque is around 10-12 ft/lbs I believe.

Thank you! Could you help me out with something. I'm having really a hard time finding these OEM parts online. Could you help me find the part numbers please

[Arsonism]

There was a thread that listed them out. I'll see if I can't find it when u get home and copy pasta it.

[Steeler]

Originally Posted by minmat11

Thank you! Could you help me out with something. I'm having really a hard time finding these OEM parts online. Could you help me find the part numbers please

Realoem is your friend for all part numbers

http://www.realoem.com/bmw/enUS/part...W-Z4_30i&mg=18

[Arsonism]

Found it.

This list is overkill, but if you wanted to do everything, this is most of it.

- 18 manifold studs Part #: 07129900298
- 18 manifold nuts Part #: 11721437202
- 6 Header gaskets Part #: 11627830667
- 4 Header to exhaust bolts Part #: 11621318568
- 4 Header to exhaust nuts Part #: 18301317898
- 2 Header to exhaust gaskets Part #: 11627830668
- Air valve control gasket Part #: 11727505259
- 8 Front axle reinforcement plate hexagon screw Part #: 31106772199


I did not use all these components, but it's on the safe side to have everything if you care to.

[Steeler]

The OP has a non M

[minmat11]

Originally Posted by dbarton62

The OP has a non M

Found it! Could you tell me exactly what I should order from this list please

http://www.realoem.com/bmw/enUS/show...diagId=18_0496

[Steeler]

Originally Posted by minmat11

Found it! Could you tell me exactly what I should order from this list please

http://www.realoem.com/bmw/enUS/show...diagId=18_0496

Don't think you need guidance especially if you DIY

Items 3, 6 and 4 is what I would have on hand.

[Arsonism]

Originally Posted by dbarton62

The OP has a non M

Oh my bad! I didn't realize. I also made a silly assumption that most of these parts would be similar. I'm still not super keen on the differences on these models.

[minmat11]

Originally Posted by dbarton62

Don't think you need guidance especially if you DIY

Items 3, 6 and 4 is what I would have on hand.

Are these the right gaskets? With a heat shield?
[IMG][/IMG]

[Steeler]

Yes,
I drilled out the rivets, installed gaskets and headers, tightened all the nuts then pressed the shields back into the dimples.

[minmat11]

Originally Posted by dbarton62

Yes,
I drilled out the rivets, installed gaskets and headers, tightened all the nuts then pressed the shields back into the dimples.

You're awesome. Thanks for the picture! You didn't cost or wrap your headers? How's the temperature under the hood?

[Steeler]

Originally Posted by minmat11

You're awesome. Thanks for the picture! You didn't cost or wrap your headers? How's the temperature under the hood?

Ceramic coated.
Inside and out

http://www.fireballcoatings.com

[minmat11]

Originally Posted by dbarton62

Ceramic coated.
Inside and out

http://www.fireballcoatings.com

I'm getting a heat wrap. the size is 2" x 50ft. How much do you think I should get?

[Steeler]

I would consider getting them ceramic coated. Only $250 in my area.
The wrap will add unwanted diameter to the tubes that will shroud the studs and make torqueing difficult. IMO.
There are already 2 nuts that you can't get a ratchet on as it is.

[3GFX]

Love this thread. Bought the same headers...worried about the Engine light...gonna try without spacers first (since the after cat O2 has a raised section).

Let me know how yours goes! I'll post when mine is done over the next few weeks.

[Steeler]

if you are running catless the gas smell when waiting at stop ligts will not be nice.
I doubt the defoulers will work but worth a try.
I have gone to Magnaflow cats on mine after 3 different configurations.

[pokeybritches]

I ordered some cat simulators from ****** (different from O2 simulators). They wire inline with O2 sensor and adjust the output signal. I'll let you know how they work once I get them put in.

[pokeybritches]

Apparently the filter blocked the name. First letter A, next REA, and then 74.

[Steeler]

Excellent Josh
In for results

[3GFX]

Originally Posted by dbarton62

if you are running catless the gas smell when waiting at stop ligts will not be nice.
I doubt the defoulers will work but worth a try.
I have gone to Magnaflow cats on mine after 3 different configurations.

Ran catless on my Jetta. Didn't mind the smell to much for the sound and performance gain. But that was a turbo car so it'll be a different case. I'll run catless and go from there.

Originally Posted by pokeybritches

I ordered some cat simulators from ****** (different from O2 simulators). They wire inline with O2 sensor and adjust the output signal. I'll let you know how they work once I get them put in.

Let us know

Originally Posted by dbarton62

Excellent Josh
In for results

+1