 Valve lash, CR pushrods / Crusty method |
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| rfinegan |
 Sep 18 2023, 07:40 AM
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#1
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Senior Member  Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region 
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Is it me, or does using the crusty method to adjust the valve lash on anything but a stock cam difficult with overlaps found in Larger Web cam?
Zero Loose gap=no play but can still turn the pushrods or Elephant feet rocker tips I still let a little ticking if both valves are not “rocking” perfect? |
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| VaccaRabite |
Sep 18 2023, 10:18 AM
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#2
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I've never had an issue, and I used a lopey cam on my 2056 with elephant feet and cromo pushrods.
Since the same cam lobe activates 2 lifters (each 180 degrees apart from each other) if one lifter is on cam at all, the other is off. The are 180 degrees out of phase with each other. Its impossible for both to be on cam at the same time. Think about it this way. The cam lobe is not bigger then the base circle. Which means that even if the cam lobe was a cam rectangle, both lifters would still be off cam at 0* and 180* (when the cam lobe was point directly up or down). Even on cams with a reduced circle base for stroker engines, this is done to clearance the crank, not the opposing lifter. Ergo - even on big cams - the method works. Zach |
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| rfinegan |
Sep 18 2023, 10:56 AM
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#3
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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Yep I get the shared lobe, but doing an the intake and the exhaust at the same time?
MY old method was to rotate each valve one at a time it was full open and adjust the other side. Not as fast but seems to get the results I as looking for |
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| ClayPerrine |
Sep 18 2023, 11:50 AM
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#4
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Life's been good to me so far..... Group: Admin Posts: 15,518 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(rfinegan @ Sep 18 2023, 11:56 AM)  MY old method was to rotate each valve one at a time it was full open and adjust the other side. I have always done it this way. I make sure the exhaust valve on the right is fully open, then adjust the exhaust valve on the left side. Repeat until you complete one side. Then repeat on the other side. Never had an issue with valve adjustments after I started doing it this way. Just my $.02 |
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| rfinegan |
Sep 18 2023, 04:16 PM
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#5
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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Thanks Clay,,, i think a hybrid version of this is in order....
QUOTE(ClayPerrine @ Sep 18 2023, 01:50 PM) QUOTE(rfinegan @ Sep 18 2023, 11:56 AM) MY old method was to rotate each valve one at a time it was full open and adjust the other side. I have always done it this way. I make sure the exhaust valve on the right is fully open, then adjust the exhaust valve on the left side. Repeat until you complete one side. Then repeat on the other side. Never had an issue with valve adjustments after I started doing it this way. Just my $.02 |
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| iankarr |
Sep 18 2023, 07:12 PM
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#6
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,481 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region
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Anyone else find it ironic that we spend more time trying to decipher Crusty's method than it would take to just rotate the engine two more times? (IMG:style_emoticons/default/wink.gif)
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| Gint |
Sep 18 2023, 07:48 PM
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#7
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Mike Ginter Group: Admin Posts: 16,083 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
Loved the Cap'n, but I was never a fan of doing valve adjustment that way.
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