Mysterious clicking noise from engine...

[savageoutlaw]

did you stuff the exhaust and listen for changes?

Yes, and as the engine quietens and slow, the "clicking" becomes louder and faster.

Means and exhaust/extractor leak or loose?

[Steelies]

yep start looking/listening/feeling where your manifolds join to head. without burning yourself or losing fingers that is..

i'm guessing A series motors share bolts between intake and exhaust manifolds? if your new extractors have a slightly different flange thickness to the intake manifold the bolts will be acting more on one that the other - ie the manifold with the thinner flange wont be squished as tight.

[Aaron]

When I had a ticking noise like this, I found the exhaust manifold gasket was gone.

Replaced it and the ticking was gone.

[savageoutlaw]

Thanks for that, the dude who done the exhaust/extractors is gonna have a look at it this monday

[RUNAMUCK]

I've had that problem a number of times on my A15. It was made worse by the ported out head making an off the shelf gasket not fit. I used grey three bond on my inlets, and that god awful red high temp sillycon on the header flanges. It never did it again.

[felixx]

when u drove past today, it sounded like a manifold leak

[bubblegoose]

if your new extractors have a slightly different flange thickness to the intake manifold the bolts will be acting more on one that the other - ie the manifold with the thinner flange wont be squished as tight.

this

[savageoutlaw]

have a slightly different flange thickness to the intake manifold the bolts will be acting more on one that the other - ie the manifold with the thinner flange wont be squished as tight.

Confirmed, guys that done it found that straight away and are working on it now, said they may need steel gaskets so it wont happen again.

Edit

Steel gaskets put on and the noise is instantly fixed and a smoother ride.