I mildly built up my b18c1 head. Itr valves, valve springs , retainers. skunk2 stage 1 cams and skunk 2 cam gears. Been running it for about 4000 miles.

On the interstate I hit vtec and felt a hesitation, started to run poorly. Got it home and come to find out that I bent the drivers side exhaust valve on cyl #1.
Its not bent much, just barely. its .05 out of round now.

How is possible that I bent the valve at vtec crossover?

 

how much is your head milled?

did you over rev it?

gear slightly slip?

 

Misshift???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SUPERNATURAL &raquo;</TD></TR><TR><TD CLASS="quote">how much is your head milled?

did you over rev it?


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just a clean up on the head.. stock bottom end. no misshifts or overrev.

 

oh yeah stock headgasket

 

You guys arnt understanding. It happend during vtec crossover 4400rpm.

 

Your timing belt might have slipped and it was just coincidence that it happened during vtec crossover.

 

timing correct? do u have adjustable cam gears?

 

the adj. cam gears were at tcd along with the block when we took it apart. they didnt slip.