Has anyone had valve train noise only when the engine is at operating temperature and not at idle from 1000 rpm to 1800 rpm can also hear the noise when in gear and rolling forward at 1000 rpm to 1800 rpm the noise seems to be be coming from divers side cylinder head more exhaust cam area
thanks

 

Do you have a light weight flywheel?

A

 

the only mods to the car are fabspeed headers and mufflers evo cold air intake, stock flywheel

 

I used to get a lifter tick sound when I used headers. You'll sometimes get that with a leaking exhaust manifold gasket or flange gasket between your headers, cats, or mufflers.

You may want to retorque the bolts on the exhaust system as with heat cycles they will change shape and start to leak causing the valve noise.

Cheers
Aaron

 

checked exhaust had small leak resolved leak noise still apparent, from what i've heard lifter noise usually is most pronounced when cold till oil is at temp then can fade away or stay, my noise is heard when at operating temp, it is more pronounced if i have been driving really hard.

thanks for the input
Marko

 

What oil do you run?

I switched to a thicker Motul oil instead of the watered down Mobil 1 recommendation.

Cheers
Aaron