Custom 3" exhaust - Questions on supporting it

[Scorpain]

Hello everyone,

First major modification to the car is the exhaust system but I do have a few questions:

I'm using 3" exhaust pipe which is a single pipe to cover every future plan to the car before someone asks why 3"

The questions I have are:
To hold the rear-end of the exhaust up, could I weld a band clamp to the underneath of the rear axle to hold the rear of the exhaust stable?
- I've not seen this done yet and wondered if it would cause some sort of issue that I can't think of.

Does it matter how many bends the pipe has it in? Due to the wishbones, the pipe has to take a sharp 45 degree angle straight off then into a 90 to go around the wise bone and to where the 'bridge' in the fuel tank is located.

Doing some browsing for exhaust hanging rods, prices seem really extortionate - Is there a reason for this? Or would buying straight rod and bending it into shape myself be easier?

Cheers all for your time

[ZX10R NIN]

Go to a company that build custom exhausts they'll charge sensible money & you also get a guarantee on the work carried out.

[Scorpain]

Honestly that was the original plan but:
I've had to order the manifold from Americuuuuh! because it's actually cheaper for what I'm after.
Actually long story short, it's working out cheaper to just build it myself and a mate that has some mild welding experience.
But i'm looking at how to hang it from the car

[Rtig]

Scorpain said:

and a mate that has some mild welding experience.
But i'm looking at how to hang it from the car

Just from this bit alone, I would take it to a proper exhaust place that knows what they're doing....

[paintman]

Attach the exhaust to the car not the axle with sufficient clearance for the axle to travel though its full range without contacting the exhaust.

This might be of interest: https://jetex.co.uk/custom-exhaust-parts/
No reason why you or your friend can't make copies.

Edited by paintman on Sunday 1st July 20:12

[Scorpain]

oh yeah... the axle moves... forgot about that HAHA!

Righty-o so with that in mind, i'm looking to route the exhaust under the axle and make sure I ride every bump instead of trying to fit it under

Cheers for the info chaps!

[E-bmw]

Scorpain said:

i'm looking to route the exhaust under the axle and make sure I ride every bump instead of trying to fit it under

So you are going to fit it under instead of under............ Right!........ Clear as mud!

[Mr2Mike]

Scorpain said:

oh yeah... the axle moves... forgot about that HAHA!

Righty-o so with that in mind, i'm looking to route the exhaust under the axle and make sure I ride every bump instead of trying to fit it under

Cheers for the info chaps!

Assuming you mean you want to route a 3" exhaust under the axle instead of over it, then I'd suggest including a loose slip joint into the system so that minor bumps in the road can rip the system off with less damage.

[paintman]

^^^^
What Mr2Mike says.
Get/make yourself a 3" tube (plumbing pipe or roll up a piece of cardboard) & see how much ground clearance you've got if you put it under the axle. Bear in mind that the tyres will compress slightly as you go over bumps reducing it further.