I test drive an S2000 yesterday with the roof off and noticed a faint ticking when driving between hedgerows or walls where the sound was being reflected back at me, is this normal? It didn't seem to speed up or slow down with the speed of the car.

 

"They all do that sir"
It is a character of the engine.
It is just more noticeable when the sound is reflected back in to the cabin.

 

Right-o good to know, have only driven 2 and 1 was with the roof on so I wasn't sure!

 

I've always found that odd - not sure what it is.

Injectors tick at idle though.

 

TCT?

I replaced mine on saturday. The engine is now as quiet as a mouse

 

My guess at that is the VTEC lobe/rocker just flopping away from not being used.

 

Yep agree with above comments, S IMO is a mechnically sounding engine IUKWIM.