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-   -   Valve adjustment Help (https://www.racingjunk.com/forums/showthread.php?t=20465)

FullTimeRacing 06-27-2008 03:26 PM

after 40 passes pulled the valve covers to check the lash wow it was .030 started at .022 so i put on tdc.every rocker I could get a .018 gage under I adjusted.turned it 90* and so on.Did I do it right? All cold

burgessdg 06-29-2008 07:27 PM

This is just an "opinion", but it is an opinion based on knowledge. Sure, there are more ways to skin a cat than just one. I don't remember reading if the question was directed at a hyd, or solid. Way different error factors there. You might not see any difference in the numbers on the Dyno with different syles of adjustment. But, the most foolproof way is to ensure the lobe is on the base circle of the cam. That takes the potential error of a high duration cam out of the picture with doing them on top dead center, or worse yet 8 at a time. I personally would never do 8 valves at a time on any cam with any duration. But hey, that's my opinion.

Dan

olds48 06-30-2008 12:27 PM


Originally Posted by montecarlo84
after 40 passes pulled the valve covers to check the lash wow it was .030 started at .022 so i put on tdc.every rocker I could get a .018 gage under I adjusted.turned it 90* and so on.Did I do it right? All cold

You set them cold,did you check them cold or hot?The way you did it will work fine.Same way I do mine,with no problems.After you set them cold just go back and do one head at a time at operating temp.Do one head,fire the motor,get it back up to temp,then do that head.Checked mine this weekend after 30+ passes,intakes were dead on the money,ea few of the exhausts were about.003 loose.Just reset them hot and you'll be fine.Leaving them set where you set them cold is were your difference come from,probably,if not figure out why they are loosening.If you don't have stud girdles already ,they will keep them from backing off :D

Tod74 06-30-2008 01:49 PM

They will be looser hot than cold. Mine is around .006 looser when hot. I just set mine cold that much tighter than I want them to be hot.

FullTimeRacing 07-01-2008 08:40 AM

I allways set'em cold i don't like hot oil and stuff.Oh I have a stud griddle on it.

FullTimeRacing 07-02-2008 06:12 PM


Originally Posted by Tod74
They will be looser hot than cold. Mine is around .006 looser when hot. I just set mine cold that much tighter than I want them to be hot.

I thought that it would be opozit(I know i did not spell that right)learned something new. :o

TheRabbit 07-02-2008 06:51 PM


Originally Posted by montecarlo84

Originally Posted by Tod74
They will be looser hot than cold. Mine is around .006 looser when hot. I just set mine cold that much tighter than I want them to be hot.

I thought that it would be opozit(I know i did not spell that right)learned something new. :o

took me a minit to figure that out. my tired brain just wouldn't compute that for some reason!! lol

Thunder71 07-25-2008 05:03 AM

i set mine> exhaust starts to open adjust intake on that cylinder>>>intake starts to open then to full lift then almost closed adjust exhaust...i warm motor to 160 degrees do 1 side then put valve cover back on then warm to 160 degrees then do the other side...i pull the plugs on the side i am doing so the motor turns easy with long rachet on the crank bolt...my cam card from comp cams says .026 on both valves....how tight do you guys like the feeler gauge to move when adjusting??? :?:

curtisreed 07-25-2008 05:57 AM


Originally Posted by Thunder71
my cam card from comp cams says .026 on both valves....how tight do you guys like the feeler gauge to move when adjusting??? :?:

If you want them set at .026 use a .025 and .027 feeler guage, just set them where the .025 will go and the .026 won't. Simple as that. Go-Nogo.

Curtis

Tod74 07-25-2008 07:44 AM


Originally Posted by Thunder71
i set mine> exhaust starts to open adjust intake on that cylinder>>>intake starts to open then to full lift then almost closed adjust exhaust...i warm motor to 160 degrees do 1 side then put valve cover back on then warm to 160 degrees then do the other side...i pull the plugs on the side i am doing so the motor turns easy with long rachet on the crank bolt...my cam card from comp cams says .026 on both valves....how tight do you guys like the feeler gauge to move when adjusting??? :?:

I do the EOIC thing too....except I do it with it running. :P


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