exhaust knuckle query

[fano45]

in light of the growing number of cracked flexis
do you guys think that if the car was designed with a spring knuckle in between the two cats
as apposed to the existing design that it would take the strain and prevent this from happening?

 

[TB Rich]

in light of the growing number of cracked flexis
do you guys think that if the car was designed with a spring knuckle in between the two cats
as apposed to the existing design that it would take the strain and prevent this from happening?

I have done this on mine because the manifold has no flexi, I'm not sure it would be needed in addition to a flexi. I think the only issue is on the standard manifold the flexi's are just inaccessible, if anyone gets a failed manifold I'd personally be going the K-tec route now because that would be so much easier to replace if it fails.

 

[fano45]

had a stock exhaust refitted and the section between the two cats was replaces with a straight pipe, no joint.
pedantic i know but im sure if i have a knuckle like yours installed it will be best.
i also have a vibreation at 3500 that im sure is coming from this.
mounts all checked and replaced

 

[fano45]

Btw where is your upstream o2 sensor?

 

[TB Rich]

had a stock exhaust refitted and the section between the two cats was replaces with a straight pipe, no joint.
pedantic i know but im sure if i have a knuckle like yours installed it will be best.
i also have a vibreation at 3500 that im sure is coming from this.
mounts all checked and replaced

If you are back on the stock exhaust then that's mild steel. I have seen a mild steel sprung joint in 2.5" from Jetex which would make this a very easy job indeed!

Btw where is your upstream o2 sensor?

That was a mid fitting photo when first installed. I've actually got a different system (Akra) attached now.

I had the front section TIG'd including the extra lambda (sorry for blurry photo!)

 

[fano45]

Thanks mate you a star