Heavy Duty exhaust hangers?

[R60BBA]

It might be worth considering a rubber insert rather than the poly bush.

Where did you get the mount from?

No need.

I just came back from a 3,200 mile road trip around the South of France, including a track day and the hangers are good. No added NVH either.

My mechanic supplied and fitted the mount but you can buy it here: https://www.powerflexsuspensionbushe...l-112134-p.asp

[Obioban]

No need.

I just came back from a 3,200 mile road trip around the South of France, including a track day and the hangers are good. No added NVH either.

My mechanic supplied and fitted the mount but you can buy it here: https://www.powerflexsuspensionbushe...l-112134-p.asp

I don't think anyone's concern is that the hangers are going to have an issue or that there will be NHV.

[R60BBA]

I don't think anyone's concern is that the hangers are going to have an issue or that there will be NHV.

0-60motorsports asked about NVH in post 53…

I responded with my initial findings in post 54 - that having a polymount as the standalone mount whilst retaining the other two mounts as genuine BMW rubber did not result in any new NVH.

ac427 picked up my response in post 54 and suggested that I consider swapping out the polymount with rubber…although not quite sure why…as well as asking where I got it from.

Nonetheless, I took the opportunity to confirm that there is no need to swap out the polymount seeing as I have done much more miles since my initial response in post 54 with no issues…whilst also answering his question on where one can get the polymount from…

[ac427]

0-60motorsports asked about NVH in post 53…

I responded with my initial findings in post 54 - that having a polymount as the standalone mount whilst retaining the other two mounts as genuine BMW rubber did not result in any new NVH.

ac427 picked up my response in post 54 and suggested that I consider swapping out the polymount with rubber…although not quite sure why…as well as asking where I got it from.

Nonetheless, I took the opportunity to confirm that there is no need to swap out the polymount seeing as I have done much more miles since my initial response in post 54 with no issues…whilst also answering his question on where one can get the polymount from…

My thinking was rubber would allow more movement for expansion

[R60BBA]

My thinking was rubber would allow more movement for expansion

You’re right and it does.

But I got tired of replacing the standalone mount so took my mechanic’s advice (Russ Foster at Swift Performance).

I’ve still got two genuine BMW rubber mounts (on the nearside for our RHD cars), so the exhaust can still expand when it’s hot…

[WBVenom]

I spoke with Ben of Rogue Engineering, who is going to look at redesigning their exhaust hanger (currently V4 with a rubber bushing and rigid design) to accommodate thermal expansion. Will see what comes of it.

Current V4 design shown below:

[Tbonem3]

In case there was anyone left who was still unclear as to the level of engineering on display at Rogue ENGINEERING. "Exhaust pipes expand?"

[davidinnyc]

In case there was anyone left who was still unclear as to the level of engineering on display at Rogue ENGINEERING. "Exhaust pipes expand?"

I actually LOL'd.

[Tbonem3]

Call it Bengineering