Used Prc double valve springs results
08-31-2011, 10:11 AM
#1
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Apr 2007
Location: Green Cove Springs FL
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Used Prc double valve springs results So I pulled off my valve springs today and had them measured and I was pretty shocked in the results... Here are the specs I got online...
.
PRC .650" Lift Spring specs:
Closed Spring Pressure: 145lbs @ 1.800"
Open Spring Pressure: 450lbs @ 1.150"
Maximum Spring Lift: .650"
Coil Bind 1.080"
Spring Rate: 469lbs/in
Here's what the machine came up with...
Closed pressure was 120lbs, Open pressure was only 325lbs
Now I'm not sure how many miles are on these, they were already installed when I purchased the car but does that seem normal for worn springs? I cant imagine them having more then 20-30k on them. EDIT: The springs have atleast 20k on them. I found an old forsale thread of the car, it was listed with 122k and had the same prc's and now has 143k.
.
PRC .650" Lift Spring specs:
Closed Spring Pressure: 145lbs @ 1.800"
Open Spring Pressure: 450lbs @ 1.150"
Maximum Spring Lift: .650"
Coil Bind 1.080"
Spring Rate: 469lbs/in
Here's what the machine came up with...
Closed pressure was 120lbs, Open pressure was only 325lbs
Now I'm not sure how many miles are on these, they were already installed when I purchased the car but does that seem normal for worn springs? I cant imagine them having more then 20-30k on them. EDIT: The springs have atleast 20k on them. I found an old forsale thread of the car, it was listed with 122k and had the same prc's and now has 143k.
Last edited by CustomX; 08-31-2011 at 12:35 PM.
08-31-2011, 10:18 AM
#3
What height were they measured at, and how were they measured. I will bet my lunch money the retainer was not installed on the spring for the test, which would make those numbers very feasible.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
08-31-2011, 10:28 AM
#4
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Apr 2007
Location: Green Cove Springs FL
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Unfortunately I had a phone call and didn't catch the whole ordeal, I gave him the above specs but they were tested without the retainers I know that much. He removed the springs and tested them on some sort of pressure tester he had mounted on his bench.
08-31-2011, 10:49 AM
#5
The shop HAS to check with retainer on to get any of that inner spring's pressure. If they want to check at 1.800", have the retainer sitting on top of the spring, and put the height of the retainer at 1.850" (puts the spring at 1.800" due to 0.050" retainer thickness).
After that your numbers will be great
After that your numbers will be great
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Last edited by Sales2@Texas-speed; 08-31-2011 at 01:07 PM.
