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02-01-2016, 01:14 AM | #1 |
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Valve springs
I have pac Springs on my O 41 heads, spring pressures run between 270 and 310. I have lots of room, no shim under the springs. When they were new, spring pressure 350lbs. I have enough room to run a 60 shim and will not coil bind. Would a 60 make much of a difference in pressure. Any suggestions Thanks Jay. GT\DA
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02-01-2016, 09:57 AM | #2 |
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Re: Valve springs
yes that will raise pressure,maybe time for a new set though install them to where they are .060'' from coil bind if they are 1409X will be about 425-450 like that.
Mike Taylor 3601 |
02-01-2016, 08:02 PM | #3 |
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Re: Valve springs
They are the PAC 1.500 double spring that sets up at 2.100. They are pretty old but trying to get a few more runs before a new set.
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Mike Pearson 2485 SS |
02-01-2016, 08:08 PM | #4 |
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Re: Valve springs
They are the Pac 1332 spring. Any one know the rate on these springs.
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Mike Pearson 2485 SS |
02-01-2016, 09:42 PM | #5 |
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Re: Valve springs
I think everything you need is in the PAC web site
http://www.racingsprings.com/ValveSpringRateCalculator
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James Schaechter 3163 STK |
02-02-2016, 02:53 PM | #6 | |
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Re: Valve springs
Quote:
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Mike Pearson 2485 SS |
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