Valve train points to check

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(Areas of the valve train that need to be checked and verified)
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==Areas of the valve train that need to be checked and verified==
 
==Areas of the valve train that need to be checked and verified==
 
This list is not all-inclusive. Not all areas will apply to all engines and/or builds.<br> {{Note1}}There is no substitute for physically measuring critical areas like piston-to-valve clearances or valve spring installed height and coil bind. For those measurements, do not rely solely on published figures.[[File:Spring clearance diagram1.jpg|thumb|upright=3|Valve spring clearances. Seal to retainer may be less in some cases]]
 
This list is not all-inclusive. Not all areas will apply to all engines and/or builds.<br> {{Note1}}There is no substitute for physically measuring critical areas like piston-to-valve clearances or valve spring installed height and coil bind. For those measurements, do not rely solely on published figures.[[File:Spring clearance diagram1.jpg|thumb|upright=3|Valve spring clearances. Seal to retainer may be less in some cases]]
*'''[[Valve spring tech]]'''
+
*'''[[Valve spring tech|Valve spring specs]]'''
 +
**Valve spring rate
 +
**Installed height
 +
**Coil bind
 
*[[Valve train points to check#Valve train geometry|'''Correct geometry''']]
 
*[[Valve train points to check#Valve train geometry|'''Correct geometry''']]
*Coil bind
 
 
*Retainer to seal/valve guide boss at full lift
 
*Retainer to seal/valve guide boss at full lift
 
*Retainer to rocker
 
*Retainer to rocker
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**Also see '''[[Quench]]'''
 
**Also see '''[[Quench]]'''
 
*Push rod to guide slot in head (see image below)  
 
*Push rod to guide slot in head (see image below)  
*Use '''EITHER''' self-aligning rockers '''OR''' pushrod guide slots in head '''OR''' guide plates, not two or more of these at the same time
+
*Use '''EITHER''' self-aligning rockers '''OR''' pushrod guide slots in head '''OR''' guide plates, but ''NEVER'' two or more of these at the same time
 
*"Rails" of self aligning rockers to retainer and/or locks
 
*"Rails" of self aligning rockers to retainer and/or locks
 
*Rocker to valve tip (if needed, adjust guide plates if used)
 
*Rocker to valve tip (if needed, adjust guide plates if used)
 
*Rocker slot to stud (if using stamped rockers w/pivot balls)
 
*Rocker slot to stud (if using stamped rockers w/pivot balls)
*Rocker arm/polylok to valve cover or oil baffle
+
*Rocker arm/polylock to valve cover or oil baffle
 
*Camshaft endplay
 
*Camshaft endplay
 
*Distributor shaft endplay and distributor/cam gear mesh/alignment
 
*Distributor shaft endplay and distributor/cam gear mesh/alignment

Latest revision as of 07:29, 15 October 2013

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