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  #16 (permalink)  
Old 08-31-2010, 04:49 AM
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Quote:
Originally Posted by adantessr
I always set the lifters on a 350 at 1 & 1/2 turns . I've done dozens this way and never once had a problem . Try it . You may like it .
well i put the motor back together last night with actually 2 new lifters (well 2 new lifter guts) as guided by colbalt it took care of the gushing lifter problem but once it warmed up again i could still hear the noise....and how do you get 1.5 turns on your valves i went .5 on all mine and the thing start shaking and shuddering and carrying on wouldnt stay running....vaccum gauge needle had the jitters ....took a .25 off each engine smoothed out vaccum reads normal.....so i havent the slightest clue how you can turn them down that much.....has anyone else used voodoo cams ....are they prone to make this much vavletrain noise?....if i find out this is what it is i`m getting rid of it

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  #17 (permalink)  
Old 08-31-2010, 07:41 AM
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Quote:
Originally Posted by untchable502
well i put the motor back together last night with actually 2 new lifters (well 2 new lifter guts) as guided by colbalt it took care of the gushing lifter problem but once it warmed up again i could still hear the noise....and how do you get 1.5 turns on your valves i went .5 on all mine and the thing start shaking and shuddering and carrying on wouldnt stay running....vaccum gauge needle had the jitters ....took a .25 off each engine smoothed out vaccum reads normal.....so i havent the slightest clue how you can turn them down that much.....has anyone else used voodoo cams ....are they prone to make this much vavletrain noise?....if i find out this is what it is i`m getting rid of it
Wow. Are you sure you were only just taking the slack out of the pushrod and not the lifter before you tightened the additional .5 turns . I have never heard of any lifter that wouldn't take .5 turns . I did have a set of heavy duty lifters back in 1970 that I put in my '62 Impala SS 327 with a new cam that wouldn't take more than a 1/2 turn though . I am only famiiar with stock lifters and totally unfamiliar with performance cams. Sorry if I gave you some bad info . I still stand by that I have adjusted doxens of engines with STOCK lifters to 1.5 turns after the slack is out of the pushrod . Happy motoring .
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  #18 (permalink)  
Old 08-31-2010, 08:07 AM
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Quote:
Originally Posted by untchable502
and how do you get 1.5 turns on your valves i went .5 on all mine and the thing start shaking and shuddering and carrying on wouldnt stay running....vaccum gauge needle had the jitters ....took a .25 off each engine smoothed out vaccum reads normal.....so i havent the slightest clue how you can turn them down that much.....has anyone else used voodoo cams ....are they prone to make this much vavletrain noise?....if i find out this is what it is i`m getting rid of it

Would'nt be because of weak valve springs or mismatched springs?? Installed at wrong height? I have a Voodoo 60103 and not had any problems like that. I have gotten some engine noise from the valvetrain at about 300 miles after installing, but that is normal-just going to readjust them this week. I have them set at 1 1/2 turns as well...
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  #19 (permalink)  
Old 09-02-2010, 03:03 PM
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Originally Posted by Blownchevelle68
Would'nt be because of weak valve springs or mismatched springs?? Installed at wrong height? I have a Voodoo 60103 and not had any problems like that. I have gotten some engine noise from the valvetrain at about 300 miles after installing, but that is normal-just going to readjust them this week. I have them set at 1 1/2 turns as well...
so upon further investigation i have found one rocker nut really easy to turn...alot easier than the rest on the driver side...havent checked passenger yet....does that sound like a weak or broken spring??....maybe the inner one??...if so think that is where all the noise is coming from??...the new cam has alittle more lift than the old one
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  #20 (permalink)  
Old 09-02-2010, 06:21 PM
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You need to replace the nuts if you're using stamped rockers w/self-locking nuts.

If the rockers have polyloc-type nuts, they shouldn't be loosening because they have a locking feature to them- as long as they're correctly tightened.

That said, I have seen polylocs loosen after being well and truly hammered on by a bad lobe allowing way too much lash into the system. But that was the least of the problems...
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  #21 (permalink)  
Old 09-02-2010, 06:28 PM
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Quote:
Originally Posted by cobalt327
You need to replace the nuts if you're using stamped rockers w/self-locking nuts.

If the rockers have polyloc-type nuts, they shouldn't be loosening because they have a locking feature to them- as long as they're correctly tightened.

That said, I have seen polylocs loosen after being well and truly hammered on by a bad lobe allowing way too much lash into the system. But that was the least of the problems...
Personally , I'd go one step further and use the all steel self locking nuts . They cost quite a bit more but I just trust them a lot more in this application . JMO
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  #22 (permalink)  
Old 09-02-2010, 07:08 PM
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Actually Big, a "polyloc(k)" is an all steel nut, w/an allen grub screw in the center.

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  #23 (permalink)  
Old 09-02-2010, 07:21 PM
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Quote:
Originally Posted by cobalt327
Actually Big, a "polyloc(k)" is an all steel nut, w/an allen grub screw in the center.

Thanks for clearing that up for me , cobalt . When you said polyloc , I was thinking 'nyloc' . Obviously not the same thing . I learned something again today . Therefore the day was not a total loss after all . LOL
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  #24 (permalink)  
Old 09-02-2010, 08:03 PM
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Quote:
Originally Posted by adantessr
Thanks for clearing that up for me , cobalt . When you said polyloc , I was thinking 'nyloc' . Obviously not the same thing . I learned something again today . Therefore the day was not a total loss after all . LOL
those are a good idea but my nut isnt loosening its just really easy to tightened down doesnt feel like theres much pressure or resistance so i am wondering if you guys think it is a broken spring?
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  #25 (permalink)  
Old 09-03-2010, 11:15 AM
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Go to the local parts house and get a new set of rocker nuts. There should be resistance even before the nuts are fully down.
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  #26 (permalink)  
Old 09-03-2010, 11:21 AM
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Quote:
Originally Posted by GMC boogie
Go to the local parts house and get a new set of rocker nuts. There should be resistance even before the nuts are fully down.
Ditto that ...Sounds to me like the nuts are no longer self locking . I found a set of polyloc nut for $28.94 HERE : http://www.pitstopusa.com/detail.aspx?ID=59662
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