Adjusting solid lifters
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===Crane=== | ===Crane=== | ||
| − | The same basic adjustment procedure should be used for mechanical lifter cams. Instead of lifter preload, you must use the clearance specs on the cam card for your cam. | + | The same basic adjustment procedure (as used with hydraulic lifters) should be used for mechanical lifter cams. Instead of lifter preload, you must use the clearance specs on the cam card for your cam. |
Also see '''[[Adjusting solid lifters#Compensating for a Cold Engine when Adjusting Valve Lash|Info from Crane]]'''. | Also see '''[[Adjusting solid lifters#Compensating for a Cold Engine when Adjusting Valve Lash|Info from Crane]]'''. | ||
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| + | ===Iskederian=== | ||
===Lunati=== | ===Lunati=== | ||
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valve lash settings noted on the spec card are “HOT” settings, and will need to be verified with the engine at operating temperature.) | valve lash settings noted on the spec card are “HOT” settings, and will need to be verified with the engine at operating temperature.) | ||
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On a SBC and most other V8s, you can cut the center out of an old valve cover to use when setting lash hot, engine running. It will keep most of the oil from splashing out. You would use 45 degree bent feelers (or bend them yourself), and if you use polylocs, using a valve adjusting tool like shown below can make things easier. A tool like that can even help when setting the lash cold because it's easier to get the same 'feel' from valve to valve. | On a SBC and most other V8s, you can cut the center out of an old valve cover to use when setting lash hot, engine running. It will keep most of the oil from splashing out. You would use 45 degree bent feelers (or bend them yourself), and if you use polylocs, using a valve adjusting tool like shown below can make things easier. A tool like that can even help when setting the lash cold because it's easier to get the same 'feel' from valve to valve. | ||
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[[File:Crane lash table.jpg|center]] | [[File:Crane lash table.jpg|center]] | ||
| − | {{Note1}}Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. After the engine is warmed up to its proper operating temperature range, you must go back and reset all the valves to the proper "hot" valve lash settings. | + | {{Note1}}Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. After the engine is warmed up to its proper operating temperature range, you must go back and reset all the valves to the proper "hot" valve lash settings.<br> |
| + | ;Return to [[Adjusting solid lifters#Cold adjustment for first start up|''Cold adjustment'']], above. | ||
;Setting Valve Lash on Mechanical Cams | ;Setting Valve Lash on Mechanical Cams | ||
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*If nothing is known about the cam and the engine isn't running, and the unknown cam has to be used, regardless- set the valves cold to 0.016" for an iron head and block engine. 0.016" is used because it's basically at the top of the "tight lash" range, and at the bottom of an old-school cam's wider settings. What you do NOT want to do is set the lash too loose! If you have aluminum heads, go 0.004" to 0.006" tighter on the cold lash. | *If nothing is known about the cam and the engine isn't running, and the unknown cam has to be used, regardless- set the valves cold to 0.016" for an iron head and block engine. 0.016" is used because it's basically at the top of the "tight lash" range, and at the bottom of an old-school cam's wider settings. What you do NOT want to do is set the lash too loose! If you have aluminum heads, go 0.004" to 0.006" tighter on the cold lash. | ||
*Most cams have an ID engraved or stamped into them, often on the back end of the cam. The lift and duration @ 0.050" can also be measured if the equipment to degree the cam is available. | *Most cams have an ID engraved or stamped into them, often on the back end of the cam. The lift and duration @ 0.050" can also be measured if the equipment to degree the cam is available. | ||
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| + | ==Special instructions for Duntov 30-30 cam== | ||
| + | [[Media:30-30 cam adjust.pdf|Duntov and other Chevy solid cams]] | ||
==Resources== | ==Resources== | ||
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