The ultimate tappet thread

[Ben Lessani]

Not sure whether I posted or not, that was the nick of the inside of the rocker cover. There was no contamination anywhere else, not even on the baffle. It could be unrelated, but worth a mention.

With regards to the pressure, I've never had the light come on, and my journeys about include some fairly hard right turns with no sign of low pressure, no light, no buzz.

The ATF will be my last(ish) resort, after the pressure test anyway. Its got me well and truly baffled.

[sidecarphil]

i've always removed tappits with a magnet and so far no problems 

you learn something every day huh 

[danny_p]

seen what happens  if a cam gets magnitised,  that is scary   but it had been stuck to an i beam for months with a big f off magnet

[mattkh]

Hi
I am learning so much from this thread.
Going back to basics, is the tappet noise the one caused when the valve edges hit the seats on the cylinder head or is it something different.

[danny_p]

it's caused by the gap between the tappet and camshaft,  if the gap is to big the cam hits the tappet when it lifts the valve whears if it's correct  the valve will sit on it's seat firmly but the cam and tappet will make contact before the cam starts trying to open the valve,  ( with mecanical tappets )  hydralic ones do pritty much the same job  but tend to stay incontact with the cam but compensate  for wear tempriture ect  untill they themselves wear or block,   big bounus with them is no fecking about with screwdriver thou gadge and spanner settign the bastards up

[mattkh]

Hi
Thank you.
In that case, Ben's problem must be the cam timing or incompatible tappets.

[danny_p]

 for some reason the tappets arnt wanting to take up the clearance when hot,  thats something else

[DarnPB]

Hi
Thank you.
In that case, Ben's problem must be the cam timing or incompatible tappets.

Cam timing will not cause the tappets to be noisy.

[sidecarphil]

could do if it was a long way out

but then there is a BIG problem

this isn't his problem

does sound like an oil pressure problem when it warms up , but why is a mistery at the moment

[DarnPB]

could do if it was a long way out

How?

Tappets take up the gap between the valve and the cam. Doesn't matter how far out the cam timing is. Any noise will be catastrophic destruction as the valves hit the pistons or pinking and back firing. Tappet noise...er no!