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#1
04-23-2004, 08:05 AM
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I could'nt find anything in my manual about valve lash, does it need to be adjusted on my car. If so what does it need to be adjusted to.
thanks |
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#2
04-23-2004, 01:10 PM
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Stock Pontiacs are desgined to be set easy.
The valve train is set so that you only run the lock nuts down to the shoulder on the stud and use 20ftlbs on them. 
__________________
Try calling CRUSHPROOF! 512-386-9889 |
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#3
04-23-2004, 09:42 PM
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Can you come over to my home and watch me do the 421?
If not. Just wait for the Pix Upcomming.
__________________
Try calling CRUSHPROOF! 512-386-9889 |
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#4
04-25-2004, 09:39 PM
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seth, they are hydraulic lifters, they do not run any positive clearance at all. Assuming an all original Pontiac valve train, when the nuts are tightened down to 20ft lbs the lifer is at about half its travel. When aftermarket cams are installed the geometry changes and different locking arrangemnts have to be made and the procedure is more like adjusting hydraulics on a chevy ie the slack is removed and a further half turn sets the preload on the lifter. Obviously the factory nusts wont hold so a simple solution is to use chevy locknts. That senario is possibly where you here of "adjusting" the valves. Either that or in a race motor if a solid lifter cam is installed then the valves need about .020+ clearance adjusted into the valvetrain. Hows that for a longwinded explanation? If there is not a problem with yours, dont screw around with them. No offence meant but by your questions you seem a little vague on how it all works and I would not advise messing with the valves at all based on that. Misadjusted vakves can cause a lot of expensive damage. (8--( Again, I hope you take what I say as well meaning advice. I had to learn from scratch as well. A MOTORS or Chilton manual that covers your car would be good reading.
__________________
  My Daddy bought me a car but all I got was this old Pontiac.
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#5
04-25-2004, 05:22 PM
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also what the clearance do the valves operate at?
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#6
04-25-2004, 04:49 PM
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So the only thing I have to do is remove the valve covers and tighten the rocker arm studs to 20 lb. ft.. nothing else?
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#7
04-26-2004, 07:58 PM
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Valve lash is something that you deal with when you have an adjustable valve train.
Stock setups don't need it.
__________________
Try calling CRUSHPROOF! 512-386-9889 |
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#8
04-26-2004, 05:56 PM
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I got the catalina about a year ago and am still learning about it. Someone was talking about valvelash and I wanted to make sure I did'nt miss anything. thanks for the help. seth
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#9
04-23-2004, 01:31 PM
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Yup, Blackcat is right. If you have a stock valvetrain, tighten them down to 20 ft-lbs and you're done.
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#10
04-23-2004, 08:54 PM
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This is my first time doing this, could you give me a little more info. Sorry for my ignorance.
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#11
04-24-2004, 08:03 AM
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love to, but its a long drive to texas from charleston sc.
 I'll just wait for the pics.
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#12
04-23-2004, 08:05 AM
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I could'nt find anything in my manual about valve lash, does it need to be adjusted on my car. If so what does it need to be adjusted to.
thanks |
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