98cobrakillata

iTrader: (2)

Patriot Gold Springs how many miles are they good for on say no more than .600 lift?

luv2spd

iTrader: (1)

Depends a lot on usage, how often it sees high revs, proper break-in, etc. In general I'd say a good 15-20k.

98cobrakillata

iTrader: (2)

well these would be on a daily driver.so they would see all rpms regulary.

Bad30th

iTrader: (13)

An educated guess would be 15-20k to be safe. Depends on many things - including cam lobes/lift, operating conditions and break-in.

It's kinda like asking "if I eat right how long will I live". The time could come tomorrow, or it could (hopefully) be a long time.

The double springs should give you a little more peace of mind knowing that the valve shouldn't drop even if one spring does break.

Cheers,
Bad30th

cyphur

iTrader: (10)

20-25k unless you take it to the redline every day, on a decent sized cam.

Lostpatrolman

iTrader: (3)

do these springs need to be shimmed ?

ROCNDAV

iTrader: (100)

So, if a person was to install the PP springs, would it be a good idea to rent or purchase a spring tension measuring tool? then compare tension at 20-25K?

If so, how much change should be allowed, or should they just be changed?

David

luv2spd

iTrader: (1)

No they do not.