Just finished reinstalling the rebuild head.now everything is back in and ready to start. We did a valve adjustment, checked the firing order.i guess everything to start it up. I gave it some gas and it started up but, my first valve(exhaust) was making a sound like air escaping .not ticking.going back to the reason I got my head rebuild. The same valve was dropping the lash. I put it back on about three times but it kept on coming off.i guess what I'm trying to say is that did we mess up installing it or the head was rebuild bad or the head was in too bad of condition to be rebuild. .sorry if the description is too brief ask any question if It sound to confusing

I used 0.08 for intake and 0.10 for exhaust on the valve adjustment

Did you re-use the valves? Sounds like one is sticking open, either bent or galled in the guide area.

All the valves are new. That's the reason I'm confused. Can the head be bad and the person that rebuilt it didn't check it right or something.

How about the springs?

All new. Tomorrow I'm checking the compression. Was 0.08 intake and 0.10 exhaust good.thats on cold. And 0.10 intake and 0.12 exhaust on hot. We also replaced the timing, sprokets, tensioner. But I'm almost 100% we did it right.

Was a new valve guide installed?

I'm thinking that they didn't replace the guide. That is one of our conserns blue

I did a compression test and all came out from 148 to 150. I would do a leak down test but I don't have the equipment. I'm also gonna remove the oil pump switch the position of the distributor. Making sure my timing is correct

The things that you're checking won't have anything to do with the lash pad coming off.

Here's something that might cause your problem - a lack of lubrication. Make sure that you have oil coming from the holes in the camshaft or the spray bars. Maybe someone left the plug out of the end of the camshaft or blocked the oil passages in the cam towers, or you have a bent or clogged spray bar.

Zed head. My lash pad doesn't come off no more. I got it rebuild but after I put the new head I turn it on and it seems like the same valve it making a sound. It sounds like pressure releasing. That's why I think that the guy didn't do a good job.before and taking it back I want to make sure it wasn't my fault

Sorry, your first post reads like it's still coming off. Not very clear what the problem is.

How can you hear noise from the valve with the valve cover on? Are you spinning or running the engine with it off? OR are you hearing noise as you turn it over by hand with the cover off. You might just be hearing noise from the crankcase through the timing chain area as some cylinder pressure leaks past the rings. It's common to hear hissing noises if you're just turning the engine over by hand. They all do it.