SR20VE head valves

[CheeseTofu]

Hi guys,

I've just recently done a SR20VE head conversion on a SR20DET block. Just to check if the stock valves break easily at high rpm? I sent mine for a tune and ended up with broken valves in cylinder 1 and the valve guides across the cylinders were broken as well. Looking to upgrade to Supertech valvetrain set, are they good?


Thanks in advance

[WDRacing]

If they broke I doubt it was from fatigue or wear. What rpm did it see. Was there valve float? Sounds like you have a timing or clearance problem. Were there any contact marks with the piston?

[2_Liter_Turbo]

Supertech makes decent valves. Sounds like you either had some timing maladies or something went seriously wrong in your valve train to cause that. They don't "just break".