After fitting the new centre section I am having trouble getting it to seal properly.

Where it joins the back box, I have no issue. The problem is where the centre sections joints onto the front part of the exhaust (think the Cat is there too?).

It looks like a ring of wire wool used as the gasget. I can only get it to seal with some sealant and tightning it up fully. I thought this section had to be a little loose (hence the prings on the bolts) to compensate for engine movement etc?

Any ideas would be good

 

The bolts should be done up until they hit their stops (thats what the stops are there for!), then, and only then, will the spring be at the right compression for it to seal.

Simon

 

the problem being even when the stops are tight enough it still leaks. Got round it by using normal bolts and doing them up tight with sealant.

 

try gettin a new wire ring seal as yours may have worn(is yours all shinny and polished where its been wearing),stupid question but u are puting the springs on the centre pipe side.

 

yes, on the rear side of the coupling. its crap!!!

 

must admint on mine I havent got the springs so I have just used normal bolts and nuts with a bit of paste (still use the donut gasket as well)

 

sound, lets hope we get no problems then! Noticed when I shook the exhuast that the drive shaft also shook and appears to be bolted together near the rear cat? Hmmmm....