The 1.4l petrol exhaust on my daughter's FII is blowing. I tried to "cure" it with high temp gasket sealant and a heavy duty hose clip. The pre-exhaust pipe is rotating inside the flexi connection and the car sounds quite "sporty" again.

 

The options are - new, but this pipe containing the catalytic converter is quite expensive.

Weld it.... or cut the flexi pipe out and replace it with a new intersection which is clamped in like this one: https://www.ebay.co.uk/itm/161759685251?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

 

It quotes the exhaust diameters. Does asnyone happen to know from experience or have a reference of the Fabia exhaust diameter?

Fabia 1.4 pre exhaust pipe.pdf

Edited 31 August, 20214 yr by 26DIPP

You can generally figure it out from the clamp size between front and mid sections, as the outside diameters either side of the cat are the same, usually.

What year and engine code?  Item 6 here if one of those codes: front silencer; rear silencer - Fabia(FAB) [EUROPA 2008 year] (7zap.com)

 

Welding is nicer leak-wise, but trickier as the orientation of the two bits needs to be carefully maintained if done off the car because of kinks up/down and side-to-side in the overall run.

 

Edited 31 August, 20214 yr by Wino

I had that issue many years ago, that point or area certainly with the BBY 1.4 16V was a bit tight for just slapping in roughly the correct sized repair section, so choose carefully, also the exhaust gets very hot in that area, so pick the grade of flexi repair section that is suitable for that, the correct flexi should have 2 internal wrappings then the protection on the outside.

 

You really do need to get under that car and measure the pipe diameter at that point and also measure the length of the flexi section - ie the full length of the section that has protective mesh covering on it - you will see welds where the flexi section got welded to its stubs - then the stubs are welded to the exhaust pipe.

 

I bought mine from senioraftermarket and got an exhaust specialist to weld it into place - but that was back in the day when the only source for a new exhaust section was VW Group and that meant serious money, if you can buy an aftermarket new exhaust section for not too much, that would be the easy way to fix this as certainly in the earlier BBY engine exhaust, there just was not a free space to fit in a simple "clamp in" clamp, which it not the smart way to fix this any way, welding is.

 

Edit:- I will have submitted the sizes in a thread I raised way back in maybe 2006/2007, I had asked someone to check the dimensions of their flexi section - I needed to do that as my exhaust specialist failed to sort it out correctly first time round - so I could not check the original flexi as it would have been binned and the new one was not the right dimensions!

Edited 31 August, 20214 yr by rum4mo

Thanks for the replies,

 

I found the old thread about your Polo.

Our car is a 2009 BXW.

I was hoping someone would give me the Fabia dimensions and I did not have to crawl under the car. I found your senior aftermarket place I think. They are called seniorflexonics now.

I will get the car on the ramp and measure.

45mm as said.

View my previous link on a computer rather than phone if you're not seeing the bit where it says the dual clamp is 45x95mm (ID x length).

I've double-checked with one of two flexis purchased when doing a similar repair on one of my 1.4s.

Edited 31 August, 20214 yr by Wino

New replacement section doesn't need to be very expensive. e.g.

KLARIUS 312045 CTALYC CONVERTER SKODA FABIA ROOMSTER POLO SEAT IBIZA 1.4 1.6 16V | eBay

I bought one from ECP a few years back for similar cash. Not up to OE quality, but may be as long lived as the rest of the vehicle, depending on plans.