Manifold blowing

[TIMMOS29]

I think my manifold is blowing and id like to try and find out where.

Is there a trick in seeing where it is blowing from? I havent got access to a lift ramp.

 

[enuff_zed]

Common N46 issue. Will be where the pipes all meet up, below the steering column joint

 

[TIMMOS29]

Common N46 issue. Will be where the pipes all meet up, below the steering column joint

i take the whole lot needs to come off and welded up? The manifold is stainless i think and the cats are steel?
Is it diy doable, as’ive got a mate that is a welder…

 

[TIMMOS29]

I take it from these photos this is a fairly common thing….can the repair be done whilst on the car? And would jb weld paste help or hinder cheers

 

[Jahmez]

I had the same problem on mine, but my mechanic wasn't to keen on welding it in place, turns out it was blowing in several places and it was too awkward a job. Ended up buying a second hand manifold off of ebay for £140, which came off a car with less than 30k on the clock. I am going to have the original one welded up and have as a spare.

 

[TIMMOS29]

I had the same problem on mine, but my mechanic wasn't to keen on welding it in place, turns out it was blowing in several places and it was too awkward a job. Ended up buying a second hand manifold off of ebay for £140, which came off a car with less than 30k on the clock. I am going to have the original one welded up and have as a spare.

ok good shout, did you take the manifold off or was it your mechanic?

 

[Jahmez]

All done by BMW specialist. They ended up replacing all four sensors on exhaust too. I didn't have the time to start stripping the car on the drive as I was working too many hours last year.

Have you read this?

https://z4-forum.com/forum/viewtopic.php?t=91195

 

[TIMMOS29]

All done by BMW specialist. They ended up replacing all four sensors on exhaust too. I didn't have the time to start stripping the car on the drive as I was working too many hours last year.

Have you read this?

https://z4-forum.com/forum/viewtopic.php?t=91195

Great find thanks!!!!!!

 

[Jahmez]

You're welcome.