When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Has anyone else seen this im tearing the motor down for my car reworking everything changing the springs the retainers the locks getting ready to start reassembly cleaning port and polish and lapping out the valves almost all of my exhaust valves have a crack in the tip top of the valve where the rocker arms meet about an 1/8 inch down the stem well above the lock grove almost as if another metal was heated and fused to the top of the valve to maybe put a harder metal above the softer valve material to give a little endurance to the life of the valve from the beating they take from the rocker arms, has anyone else seen this? i have not noticed any issues with the intake im guessing COOLER? DIFFERENT MATERIAL? only on the exhaust side and im wondering is this something that is being caused by an underlying issue or just stressed out valves im ordering new exhaust valves but want to try to get my engine on the right track the first time not after it drops a valve on a new engine.
COOLER? DIFFERENT MATERIAL? only on the exhaust side and im wondering is this something that is being caused by an underlying issue or just stressed out valves im ordering new exhaust valves but want to try to get my engine on the right track the first time not after it drops a valve on a new engine.
More than likely, yes they do have a hardened tip welded on. What kind of valves are they?
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
cracking in the valve tip? 
