bent pushrods with new roller rockers

[erhan ergin]

The rollers are not self aligned. The stamped ones are not self aligned either below is a pic.
BTW I found one more bent pushrod. I took all the roller rockers off. I will just go back to using the old stamped rockers.
The stamped rockers look quite warn, would you say that looking at the pics? Would the over tightened rockers be causing such a warn tip or is this pretty normal?

 

[COPO]

You have worn rocker arms with one having a nice gouge.
I replaced my Z28 rocker arms for the accuracy of the 1.52 roller tip. I had over 100,000 miles on my 0 rocker arms and they still looked good. Get yorself a set of roller tip non adjusting if you still are going to use guide plates.

Using 1.52 Comp Magnum Roller Tip Rockers,
part # 1412-16

 

[biker]

The rollers are not self aligned. The stamped ones are not self aligned either below is a pic.
BTW I found one more bent pushrod. I took all the roller rockers off. I will just go back to using the old stamped rockers.
The stamped rockers look quite warn, would you say that looking at the pics? Would the over tightened rockers be causing such a warn tip or is this pretty normal?

I dont think your roller rockers are the problem. I'm guessing your install with improper valve lashing might have done it. Sorry to repeat that from my last post, but I think pulling the intake to see exactly what you are doing while setting valve lash is a good idea. Gotta make sure each lifter is on base circle and that you are truly working off 0 lash when pre-loading the lifter 1/2 turn.

 

[erhan ergin]

I have done valve adjustment before and used the following method. I opened up valve covers, start the engine. Losen the valve until it ticks then tighten it until ticking quiets down and turn another half a turn. I have also done without the engine running when I was rebuilding my 302 truck engine. I agree wiith the intake off it is much easier. Also I cannot rotate the crank from the crank bolt as it is very congested there, being by myself does not help either. I bump the starter instead which is what got me to this point. I probably would have been OK if I hand rotated it.
Anyway thanks for all the suggestions and replies.

 

[COPO]

There shouldn’t be a problem setting lash with the intake on, just don’t use the spin method, use the up down movement.

 

[biker]

I have done valve adjustment before and used the following method. I opened up valve covers, start the engine. Losen the valve until it ticks then tighten it until ticking quiets down and turn another half a turn. I have also done without the engine running when I was rebuilding my 302 truck engine. I agree wiith the intake off it is much easier. Also I cannot rotate the crank from the crank bolt as it is very congested there, being by myself does not help either. I bump the starter instead which is what got me to this point. I probably would have been OK if I hand rotated it.
Anyway thanks for all the suggestions and replies.

Ok good. You have done it before, so u get the concept. Keep us updated!

 

[cadillac_al]

I have bent valves before on the engine stand just bumping the starter without even bending a push rod. I would be concerned. After getting the valve train set up correctly you should do a compression check to see if the valves are still sealing.

 

[erhan ergin]

Is it possible to pump up the lifters by cranking with the ignition coil unhooked for a period of time? Say 10-20 seconds?
I checked all the pushrods, only 3 are bent and they are all on the driver side where I had put the roller rockers. I did not touch the passenger side and just to be sure I checked couple of pushrods there and they appear OK.
Here is what I am hoping to do essentially:
1- I have all rockers and pushrods removed on the driver side.
2- I checked and saw one lifter is collapsed.
3- I used usb boroscope to check and everything inside looks fine
4- I am going to crank with the starter and hope to pump up the collapsed lifter. I can possible put some oil in there from the top with some silicon hose but I am not sure it would make a difference.

I know this is a short cut and the right thing is to remove the intake but I do not have time and I am worried if I can seal the intake properly. It seems anything I touch ends up leaking these days...

Let me know if you see any issue with what I am planning.

Thanks for all the responses.

 

[biker]

You can certainly try, and it may just work. Make sure your battery is good and charged, pull the spark plugs to let it spin over easier and see what happens.
I dont blame u for not wanting to pull the intake, it's an awkward job to do by yourself especially if you have a stock intake manifold.

Stick a long screwdriver down the pushrod hole and lightly press on the collapsed lifter to make sure it follows the cam lobe during the cranking. If not, it may hang up off the cam and not see any pressurized oil through the oiling port.

 

[erhan ergin]

OK I will try but I am not sure how I can crank and hold the screw driver at the same time. I do have a "lone wolf" remote starter but I could not reach the starter behind the headers to hook it up. I am not sure any of you follow Vicer Grip Garage on you tube , Derek calls his remote starter "lone wolf" cracks me up, really nice guy.
Thanks for the suggestions, I will report back tomorrow how it goes.