Valve train points to check
From Crankshaft Coalition Wiki
(→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''']] | ||
| − | |||
*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, | + | *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/ | + | *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 | ||
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