3" exhaust clearance

[willg54]

Right...my fabber called me up concerned about the amount of clearance in a few areas with a 3" exhaust.

Firstly around the downpipe bottom...very little clearance to the floor.

and secondly around the rear driveshaft.

Has anybody got any experience with a 3" exhaust and offer any tips of advice?

Cheers

Will

[terrybullwon]

Right...my fabber called me up concerned about the amount of clearance in a few areas with a 3" exhaust.

Firstly around the downpipe bottom...very little clearance to the floor.

Will.

I have a 102mm down pipe and a 102mm flexi which again is wider than the pipe diameter because of the wire mesh (maybe 110mm) and the gear box is still a lower point. Maybe he needs to try a little harder

[Jamo]

must agree make sure the centre section is not just hanging and has a brace connection

[newsh]

3" all the way should be pretty easy

[ian4455]

Here's a picture of my 3" downpipe put together by myself under the car. Clearance should not be an issue, maybe show this to the fabricator

[terrybullwon]

Here's a picture of my 3" downpipe put together by myself under the car. Clearance should not be an issue, maybe show this to the fabricator

Have you braced it to the transmission?

[Fat Audi 80]

IIRC clearance over the rear subframe is very difficult with 3", you need to ovalise the tube or come down to 2.75"... HTH

[Biturbo]

more foto with 3" on audi

[Jamo]

See Greg_s thread for photos

[Azman]

IIRC I had no issues with 3" all the way over the rear on my old coupe. Fabricator just needs to try a touch harder from the sound of it

[Sonic]

3" downpipe on mine also, the dp had to be re-welded to get it to fit without touching, and is braced on the underside, before going into the 2.75" milltek to get over the rear subframe.

[K Simmonds]

One tip I can give on this topic.

The Alloy the inner CV heat-shield can be swapped for a Steel one from a C3 bus which is a lot thinner and can be modded to make it an even tighter fit being easily welded. Gives an extra couple of mm's and still protects the boot/joint.

[Jamo]

Excuse my ignorance but what is a C3 bus

[tscheel]

One tip I can give on this topic.

The Alloy the inner CV heat-shield can be swapped for a Steel one from a C3 bus which is a lot thinner and can be modded to make it an even tighter fit being easily welded. Gives an extra couple of mm's and still protects the boot/joint.

Pardon my ignorance, but what is a C3 bus? VW Transporter T4?

I have a plow of a 3" SS system from the former owner I'd like to adjust a bit..

[GazzaG60]

t4 is 108mm inners. this was the trick for a 6 speed 02m to the G60 shafts. not sure as never used one. i removed the near DS cover no issues.

3" striaght through. over axle did catch from time to time on rear inner CV. maybe downpipe to wagner tubes allows more space?