172 decat fitting

[vala]

well im going to fit a decat to my 172.
the old bolts on the cat to centre section are well and truly rusted so unless wd40 helps it overnight it looks like the ol angle grinder will be coming out:evil:
am i correct in thinking its just a standard 13mm nut and bolt combo (maybe with a couple of washers)? just thinking of getting some stainless steel ones to replace them.
as for the cat to manifold i've ordered a fitting kit through k-tec so hopefully that will solve that end.

 

[renault_wizz]

Good luck fittin the de cat they r a rite b**ch...... B careful when takin the spring bolts out which hold downpipe 2 manifold

 

[vala]

Good luck fittin the de cat they r a rite b**ch...... B careful when takin the spring bolts out which hold downpipe 2 manifold

cheers matey and will do with regards to the spring bolts.

anyone got any answers to my question regarding the 13mm nut and bolt?
also there seems to be a metal gasket (looks like it anyhow)...can i just replace this with a silicone sealant or won't that be good enough to withstand the exhaust temp?

 

[James.f]

heat them up, then try and remove them, and if you do get them off soak them up with WD then whack some grease on them so they will bolt back together easily

 

[vala]

Cheers for the reply. If the heat method or WD40 doesn't work will any stainless 13mm nut and bolt work? Or would I have to use something like a locking nut etc?
And also will a silicone sealant be any good as it's looks like the metal one there isn't in the best of shapes (although its not blowing from there...)