PRC Dual valve springs - your suggestions
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My PRC dual valve springs (rated at .650+ lift) have 30k miles on them, I use the springs with my MS3 cam and my engine is perfect - no sputtering, no misfires, no unusual noises, etc…..Pulls like an animal and no signs of Valve float. Im just worried that they have 30k miles on them, When should I change them out?
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I would definitely do srrings and retainers I Put new ones on when I did the cam and then I went with dual springs when I did the heads ( patriot gold), also did rods. Its kinda cheep insurance IMO.
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No dude I'm just saying that when you do a cam swap if you still have stockers replace the springs, rods and retainers . Titanium retainers will last for along time of corse. But when I went heads I went with dual springs which came with the heads along with the retainers, reused the TR rods.
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www.patriot-performance.com
gold springs .650 lift are $8.00ea
gold extremes .660 lift are $9.50 ea...
gold springs .650 lift are $8.00ea
gold extremes .660 lift are $9.50 ea...
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To err on the safe side I would replace them if you don't have the capability to test and shim as needed to desired open and closed pressures. $100 and 4 hours of cussing installing them are better than dropping a valve into a piston.
I have a tad over 20K on my Patriot Golds with my TR224 and they are only down a few lbs over new.
I have a tad over 20K on my Patriot Golds with my TR224 and they are only down a few lbs over new.
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I would change all the springs, because with 30,000 miles they will be stressed , I use the PRC Platinum springs .670 lift., I had the PRC gold .660 springs and when i removed them they were different height by .200" with 15,000 mile, BUT i was maxing them out ,with .651 lift cam. So i up graded. But the best part i never broke any of the with that lift. PRC is a grate spring