so was installing BC 3plus cams in my b16, had cam gear set at 0,0 and rotated the motor, on exhaust stroke the valve is hitting the piston, only on cyn 3. very confused its just stage one cams. only thought is to removed the head and see whats up? looking see what other insight can be shed on the issue.
thanks

 

make sure everything is lining up timing mark wise, I'd say it's off at couple to few teeth. Start over with everything at TDC and check your marks.

 

i will try that again the marks seemed good.

 

could the head be milled that much, to where a stage one would hit? any one know the height so i can check.

 

with vtec engage or not?

 

you should not be hitting the pistons with valves when you're using BC3 cams set at 0/0. IF you're SURE that everything is lined up and you're still hitting the pistons, something else is WAY off.

 

he hasnt said what he has done to the bottom end so how do you really know?
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I know by what I said. IF everything is lined up and he's still hitting the pistons, SOMETHING ELSE IS WAY OFF. (Read bottom end)