OK so I think I may have a problem. I have put about 50 miles on my car now with just having the engine rebiult. I got on it through a couple of gears and then the car started misfiring and ticking. I'm wondering if the rockers need to be adjusted. Is it normal to have to keep adjusting these? I pulled the covers of to make sure nothing broke and I also looked at the spark plugs to make there was not any oil on them. Everything was intact but I'm not sure what to look for with the roller rockers. Can someone advise me on this please?
Roller Rockers
- Thread starter rrudholm
- Start date
You sure you got them adjusted in good, and locked the lock screw?
If so, you should be fine. But if the lifters weren't primed when you set the lash on the pushrods, that might cause your problem.
First look for easy stuff (exhaust leak, really loose rockers, etc.). If you find nothing, then reset the lash.
If so, you should be fine. But if the lifters weren't primed when you set the lash on the pushrods, that might cause your problem.
First look for easy stuff (exhaust leak, really loose rockers, etc.). If you find nothing, then reset the lash.
It was running very well. I did not hear anything unusual until I decided to push it hard through a couple gears and then all of a sudden it started ticking kinda of loud and it seemed as if not all of the cylinders were firing correctly. What do you mean that the pushrods have to be primed before they are adjusted? This engine was built and oil was not put in until I was ready to prime it and fire it up.
The lifters, not the pushrods, need to be primed when you set the rockers. If not you may end up with your valvetrain too tight (or possibly too loose). Since you have run it, your lifters are now primed. You may want to consider pulling the valve covers and resetting the rockers.
The shop that built my engine never had oil in it so I know then that they could not have adjusted them correctly per what you are saying. What Happened is the car ran and sounded fine but when I would get thr RPM's up then the car would start miss firing and clatter. It would go away when the RPM's would come back down. I'm new to this so I'm not as keen on this as you. I apreciate your input. I have searched this forum and found how to properly adjust the roller rockers but I have one question. When you start feeling resistance on the push rod and the turn 1/4 to 1/2 turn past that. Should you still be able to spin the push rod or not?
drakesdad
Member
reddy351
10 Year Member
Not only that, you need to break the engine in. No synthetic oil for the first 500 miles. No "getting on it" for the first 500 miles. (Keep the revs under 3000, or so.) When you get to about 500-600 miles, change the oil and filter. You can use syn, at the 500 mile oil change. This is all part of the break in period.
Zero Signal
Active Member
If you don't let the lifter bleed down, you will compress the valve spring as you do the 1/2 past zero lash adjustment so it will make is pretty hard to turn the lifter. Once the adjustment is made, you'll probably find you can turn the pushrod with your fingers a few minutes later.
Thank you for your input guys, So when adjusting the 1/2 turn past Zero, I want to turn the nut very slow as to allow it to bleed down right and what if it does not compress and I can't even turn it 1/2 turn without it stopping. Is there a way to tell if you have a collapsed a lifter?
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