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#1
09-04-2009, 08:51 PM
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valve spring pressure tolerances
wondering what would be acceptable tolerances for the valve springs on my solid roller as far as seat pressure.
seat load is rated at 200. using moroso spring checker, heads on the car, i have one that reads 200...about half that read 160 and the other half read about 180. those readings are intermixed exhaust and intake.
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69 bird, 428 custom solid roller, rpm intake, #62 heads sd ported 260 cfm, 850 holley dp. arias pistons.scat rods redneck tranny, continental 3200 stall |
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#2
09-04-2009, 09:18 PM
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Are you checking them all at TDC?
How old are they? Installed height same on all? (spring seat to under side of retainer) |
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#3
09-04-2009, 10:44 PM
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OOOOHHHH lemme guess!!!
Comp #917 springs,,,right??? If so,not all that uncommon of a phenomenon for those springs. 
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#4
09-05-2009, 01:34 PM
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With new springs for rollers I like at least 250 lbs.
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#5
09-07-2009, 07:40 PM
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they are the 917's, they are a couple years old although very low miles.
to check them i just brought them to where i had free play on the rocker
__________________
69 bird, 428 custom solid roller, rpm intake, #62 heads sd ported 260 cfm, 850 holley dp. arias pistons.scat rods redneck tranny, continental 3200 stall |
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#6
09-07-2009, 07:41 PM
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Quote:
__________________
69 bird, 428 custom solid roller, rpm intake, #62 heads sd ported 260 cfm, 850 holley dp. arias pistons.scat rods redneck tranny, continental 3200 stall |
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