cold lash setting 097
Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
cold lash setting 097
Hello, 3 part question
1.is there a way to set the lash (cold) on the 097 so that it will be at the proper(recomended) when warm?
2. what would the lash settings be ?
3.and is the old school way to start at top dead center number 1 position and set the appropriate intakes and exhaust then rotate 360 and adjust the rest?
I checked the archives and could find information on the 30-30 but not the 097
Regards , Xiaoman
1.is there a way to set the lash (cold) on the 097 so that it will be at the proper(recomended) when warm?
2. what would the lash settings be ?
3.and is the old school way to start at top dead center number 1 position and set the appropriate intakes and exhaust then rotate 360 and adjust the rest?
I checked the archives and could find information on the 30-30 but not the 097
Regards , Xiaoman
Melting Slicks
Joined: Jul 2004
Posts: 2,869
Likes: 196
From: Maryland
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
Hello, 3 part question
1.is there a way to set the lash (cold) on the 097 so that it will be at the proper(recomended) when warm?
2. what would the lash settings be ?
3.and is the old school way to start at top dead center number 1 position and set the appropriate intakes and exhaust then rotate 360 and adjust the rest?
I checked the archives and could find information on the 30-30 but not the 097
Regards , Xiaoman
1.is there a way to set the lash (cold) on the 097 so that it will be at the proper(recomended) when warm?
2. what would the lash settings be ?
3.and is the old school way to start at top dead center number 1 position and set the appropriate intakes and exhaust then rotate 360 and adjust the rest?
I checked the archives and could find information on the 30-30 but not the 097
Regards , Xiaoman
ps....i just checked a motors manual from 63 and it also lists .008 intake and .018 exhaust from 58-62 but special hp engines use .018 E->012 I
i would adj them cold at 18-12
Last edited by midyearvette; Mar 17, 2010 at 03:28 PM.
Race Director
Joined: Aug 1999
Posts: 18,126
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From: WI
Cruising
Joined: Oct 2009
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Yes, testing done at the factory never showed much more than .001" difference due to the similar expansion coefficients of the valve train parts with respect to the cast iron heads. Aluminum heads would be another story, but not as much as you might think.
Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
regards xiaoman
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
i used to set them .018 ex. and .012 intake......i will check the assy manual if im wrong.....
ps....i just checked a motors manual from 63 and it also lists .008 intake and .018 exhaust from 58-62 but special hp engines use .018 E->012 I
i would adj them cold at 18-12
ps....i just checked a motors manual from 63 and it also lists .008 intake and .018 exhaust from 58-62 but special hp engines use .018 E->012 I
i would adj them cold at 18-12
I now set them at .012/.018 cold. Works fine for me. If you tighten up the intakes to .008, you'll lose a little bottom end, especially in a 265-283 but pick back up a little on the top end. You can even feel the difference in a 327.
I don't think there's any difference in performance between setting them hot or cold. I can't tell the difference. You gotta' ask yourself, how hot is hot? Hot at idle or hot as wide open, sustained throttle?
One of the main things in adjusting valves is to make sure your adjusting nuts are good and tight on the studs so they don't back off. If they've been off/on the rocker studs a few times, it may be you need new ones.
I adjust one cylinder at a time. Others do it differently.
You may want to adjust one bank at a time cold and then start the engine and check your work while it's idling. This may help until you gain experience.
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Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
thanks for the link never knew about this site or organization, will become a member.
Regards, Xiaoman
Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
Hello,
what about tdc at no. 1 and setting half the valves at once and rotating 360 to set the others...does it mater with solids or does it only apply to hydralics?
Regards, Xiaoman
what about tdc at no. 1 and setting half the valves at once and rotating 360 to set the others...does it mater with solids or does it only apply to hydralics?
Regards, Xiaoman
Team Owner
Joined: Aug 2007
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Army
There is NO lash on hydraulics as they are pre-loaded so of course this method doesn't work on them...
Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
Regards, Xiaoman
Thread Starter
Racer
Joined: Feb 2010
Posts: 292
Likes: 1
From: West Los Angeles California
If you read my attachment it tells you exactly how to do the lash with that 2-step method (which I use). It works perfectly on the Duntov 097 cam and solid lifters...I wouldn't use it on a 30-30 cam.
There is NO lash on hydraulics as they are pre-loaded so of course this method doesn't work on them...
There is NO lash on hydraulics as they are pre-loaded so of course this method doesn't work on them...
regards , xiaoman
