Can I replace these for normal bolts or is there a reason for the 'give' they provide?

Reason being, I've just put my cat back on for its MOT and theres a grand canyon of a gap and the exhaust is now blowing like a mofo (alongside the rattly cat! the car now sounds totally busted and is meant to make it through an MOT lol)

Its almost like one of the springs has gone loose? Can I know just whack on some normal bolts?

 

Spring loaded because the CAT gasket that goes between the downpipe and the CAT is meant to provide a degree of movement.

Have you lost the gasket?

 

Wouldn't be surprised...mine was missing

Have tried tightening them up in turn to bring the cat closer to the downpipe?

 

That is the thing I suspect you are missing

It's about £3 from Honda.

 

Great post Fester

Cost me a little more than £3 though...nearer a fiver IIRC

 

Hmm.. yeah, sounds like the gasket has gone missing in that case... will have to bodge it with more gasket paste

Also, you can't actually tighten the bolt past a certain extent so theres no way of increasing the spring tension.. i tried washers, but couldn't find the right size

See what happens on Sat, but when the decat is on, I guess I should really just be able to put normal bolts in? I can't remember if theres a gap with the cat or if the downpipe and decat flanges line up without any gaps

 

I got both gaskets today in preparation for possibly fitting a 2nd hand CAT - i know the larger gasket often falls out in pieces when you remove the original CAT, it's best to be prepared to save you taxi ride to get it half way through the job

Tej - get the gasket, exhaust paste won't last 2 seconds in there, the engine movement will crack it out.

 

If you order one first thing tomorrow on a rush order, you should have it by Saturday morning. They aren't usually held in stock

 

Mine arrived next working day at the dealership - should be there friday morning if you order it tomorrow first thing.

 

I'm pretty sure on the stock manifold the donut thing is build into the end of the manifold? - i remember someone on here pointing this out and they were correct.

For my tracysports manifold i had to get a donut, but a garage gave me the largest one they had, luckily it fitted it was either 60 or 63mm.