[1981zapper]

Before putting my 427 engine in, I wanted to make sure that my timing tape was dead on, so i used a Piston stoper to make sure, well i put my piston stopper a little to far in and i think i hit the valves, the threads on the piston stoper are nicked, i'm worried i might of done damage to one of valves??

[68NovaSS]

I doubt you did any damage, is this a hydraulic cam? And you were turning it slowly by hand? I would do a compression check just for peace of mind and pull the valve covers and have a look around.

[1981zapper]

Originally Posted by 68NovaSS

I doubt you did any damage, is this a hydraulic cam? And you were turning it slowly by hand? I would do a compression check just for peace of mind and pull the valve covers and have a look around.

The engine was just rebuilt with Edelbrock Aluminum RPM Heads, and the engine has not ran yet, yea i was turning it by hand, i had the valve covers off when doing it, i didn't see anything, what should i look for?

[68NovaSS]

The only thing you could possibly see is a valve sticking open, or a bent pushrod. It doesn't look like you hit hard enough for any of that. JMO

[1981zapper]

Yea good idea, well i thought of buying a inspection camera, i can get one with a 9.5MM camera head, so i will check it out tomorrow

[1981zapper]

and yes it is a roller cam

[F-BIRD'88]

Next time loosen off the rockers completely on that cylinder before installing the piston stop.
Yes you may have bent a valve.

[alkey]

do a leak down or comp test.you could put compressed air into that cyl and listen for air leak if you dont have comp tester or leak down gauge

[bigblockragtop]

I did the same exact thing with mine. I never took it apart but it has 10k miles on it since. I was using it to check timing like you(TDC) Then I would just unsecrew it and rescrew it As it go closer after that to check it. I can't say you did not hurt anything but I don't think I did Good luck