Adam_BlackRS

What could it be ?

Coming from the cam pully side.

I've changed the valve springs and tappets

It only does it when the engine/oil is warm

Rab

Worn camshaft? At least, thats exactly what I'm getting from mine.

AndyRST

Was there any play/wear in the bore when you had the engine out? My old red RST had a tapping noise like yours, it only happened when hot.

I replaced the cam and tappets but turned out to be play in the bore of the block.

Adam_BlackRS

Not that i could see. This noise started happening the last time it was alive..... Track National Day 2003 !!!

So it could be the engine.......

Rich_w

Hairline Cracked manifold? As it gets hotter it expands? Probably somewhere you cant see it too.

Daveyraveygravy

Mine was 3 snapped exhaust manifold studs, had exactly the same symptoms.

Only did it after i had given it a good boot!

Friend said it was the noise the valves make just as they open/close, when the manifold was warm it opened up a very small gap which made it possible to hear them

Tony Turbo

Borrow a type of stethascope (spl) tool used for pin pointing noises


That's how we know my injectors make a racket, and not the cam PMSL

Rick

cam pulley/altarnator/manifold

adamS2RST

Cambelt tensioner?

Rick

thats what i meant

Adam_BlackRS

Oh, and it seems to go away when i rev the engine a little

Eagle

iTrader: (2)

so just keep revving the engine

check the alternator heat sheild isn't loose ...

i have had this before .. took me ages to find it 2 of the bolts were loose

Neil S

iTrader: (1)

I'd put money on it being an exhaust manifold gasket, loose studs etc

Have a poke at this first as the bits are cheapest

Neil.

abdr500

iTrader: (1)

pisston slap or littel ends