LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Car runs like crap after installing roller rockers

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Old Jun 12, 2005 | 01:54 PM
  #1  
96KillaZ's Avatar
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Car runs like crap after installing roller rockers

I installed roller rockers on my driver side today and now my car is running horrible. It shakes, it sounds different and my car feels like it is running at half its strength. I installed my rockers by doing the engine on method which by the way was a pain in the *** due to the oil leaking on the headers and then the smoke. Each rocker was turned a 1/4 past zero lash. I hope I didnt damage anything. What am I doing wrong? Why is my car running like crap? I live in the bay area in San Jose and it would be great if someone could come over and show me how to properly adjust my roller rockers.... Thanks
Old Jun 12, 2005 | 04:57 PM
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Re: Car runs like crap after installing roller rockers

Are they tapping? (Making a loud clanking noise?)
Old Jun 12, 2005 | 04:57 PM
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Re: Car runs like crap after installing roller rockers

......on just the driver side?
Old Jun 12, 2005 | 05:07 PM
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Re: Car runs like crap after installing roller rockers

Originally Posted by romoranger
......on just the driver side?
Thats what I was wondering too.
Old Jun 12, 2005 | 05:28 PM
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Re: Car runs like crap after installing roller rockers

You have probably got them to tight. Go to Shoeboxe's site and review the procedure.
Old Jun 12, 2005 | 06:05 PM
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Re: Car runs like crap after installing roller rockers

here is a reliable procedure....rocker arm adjustment here

Billy D.
Old Jun 13, 2005 | 02:18 AM
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96KillaZ's Avatar
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Re: Car runs like crap after installing roller rockers

Originally Posted by romoranger
......on just the driver side?
Well after I did the driver side and the car was running horrible I did not proceed to to do the other side of the car untill I figured things out, but I think I may of just tightend them to tight.

P.S does anybody have any tips on how to adjust the rockers while the engine is on and not get oil all over the place? My biggest problem was oil dripping on the headers and causing alot of blinding smoke
Old Jun 13, 2005 | 04:52 AM
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Re: Car runs like crap after installing roller rockers

Originally Posted by 96KillaZ
Well after I did the driver side and the car was running horrible I did not proceed to to do the other side of the car untill I figured things out, but I think I may of just tightend them to tight.

P.S does anybody have any tips on how to adjust the rockers while the engine is on and not get oil all over the place? My biggest problem was oil dripping on the headers and causing alot of blinding smoke

put towels next to the heads so when the oil shoots out the towl will catch it!
Old Jun 13, 2005 | 07:17 AM
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Re: Car runs like crap after installing roller rockers

jesus christ. Put the roller rockers on both sides first. Your roller rocker's are 1.6 and your stock ones are 1.5 I believe. So you're running bigger on one side than the other. That would explain the stumbling. You've got one bank running stronger than the other. That would be like buying a cam that is .500 lift on one side and .600 lift on the other side. Also, you probably have an lt1 knock module. You'll need an lt4 knock module with roller rockers.
Old Jun 13, 2005 | 05:35 PM
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Re: Car runs like crap after installing roller rockers

First 1.6 on one side and stock on the other won't cause problems like he is having.

Second, you don't need to adjust your valves with the motor hot and/or on. Let it cool down, take your time and do it right. Double check. Then you should be good to go.
Old Jun 13, 2005 | 05:42 PM
  #11  
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Re: Car runs like crap after installing roller rockers

I thought you were supposed to adjust the rockers by sound. How else could you do it?
Old Jun 13, 2005 | 05:50 PM
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Re: Car runs like crap after installing roller rockers

You tighten the rockers until you feel drag on the pushrod. You then turn the nut the specified amount(1/16, 1/8 etc.) and lock them down. They have to be at the right spot on the cam though.
Old Jun 13, 2005 | 08:59 PM
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Re: Car runs like crap after installing roller rockers

Originally Posted by slimdawson
You tighten the rockers until you feel drag on the pushrod. You then turn the nut the specified amount(1/16, 1/8 etc.) and lock them down. They have to be at the right spot on the cam though.
How do I lock them, my roller rockers have poly locks and I know it has something to do with those allen wrench nuts in the center of the roller rocker but exactly how do I do it? Do just set the rockers than I tighten the poly locks? Thanks
Old Jun 13, 2005 | 09:28 PM
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Re: Car runs like crap after installing roller rockers

I posted the dummy proof procedure for doing your adjustment....screw doing it w/ the motor running... this way takes a little longer, but you will only do it once. To do the poly locks, you reach zero lash on your pushrod, tighten the allen head as tight as you can, then give the outer nut (9/16 I believe is standard for poly locs on 3/8" studs) about 1/8 to 1/4 turn and your done...move to the next one~

Billy D.
Old Jun 14, 2005 | 12:40 AM
  #15  
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Re: Car runs like crap after installing roller rockers

Try this.....

Unplug the coil wire to the opti so the car doesnt fire.
Have someone bump the engine.watch 1 set of valves at a time until you see both the intake and exhaust go completely flat(both will be even with the roller ends up and springs uncompressed) once they are both at TDC(top dead center) then spin the pushrod with your fingers and slowly tighten the polylock until it does not spin anymore(zero lash) after you reach zero lash give it about a 1/4 turn more. do each cyl. like this one by one then start the car and listen if any of them are tacking a little bit go through and lightly tighten the ticking ones.


good luck
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