×

Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

Valve failure analysis

Practical Engine Building

Forum Posts

Courses

Blog

Tech Articles

Discussion and questions related to the course Practical Engine Building

= Resolved threads

Author
1005 Views

Engine: audi 1.8T 20V

what can cause this failure this's supertech valve kit with everything else OEM in the head the engine just ran for 5 minutes and this happened what could be the problem?

Attached Files

Could you please post a close detail picture of the broken end of the valve stem?

Exactly which valves are they - intake or exhaust, material, solid or sodium filled, etc - the greater the information you can provide, the better. There is no way such failures are acceptable, but apparently there were issues with some nitrided stainless steel exhaust valves failing in a similar manner.

What the engine rpm at the time, or shortly before?

[edit] You may find this of interest - https://www.youtube.com/watch?v=CvrVLa5iR40

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?