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| Dodge Competition and Performance General Dodge Competition and Performance Discussion |
10-02-2012, 08:19 AM
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#1
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Name: qssc
Title: Diesel Enthusiast
Status: Not Here
Join Date: Sep 2008
Location: Eastern Shore, MD
Member`s Gallery
Posts: 151
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60lb valve spring limit
When are 60lb valve springs not enough spring for a 12v. They seem to the most common upgrade but there are other options out there. Is it determined by boost? rpm? What draws the line when say you need to from a 60lb spring to a 150lb?
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1998 ram 2500-SOLD
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10-02-2012, 08:42 AM
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#2
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Name: DISTURBED
Title: YEA WE RIDE THE SHORT BUS
Status: Not Here
Join Date: Nov 2007
Location: Winchester, Va
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Posts: 6,417
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RPM, cam lift/profile
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Thanks, Jeremy
01 CTD Retired sled puller, dedicated "Twin Turbo" tow rig
96 CTD "TOO" Disturbed 3.0 - Built by Disturbed Diesel Performance
96 CTD "The Sickness" 2.6/2.8- Built by Disturbed Diesel Performance
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10-02-2012, 08:46 AM
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#3
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Name: qssc
Title: Diesel Enthusiast
Status: Not Here
Join Date: Sep 2008
Location: Eastern Shore, MD
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Posts: 151
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Say I ran a stock cam, what rpm do they need to be bigger? I have a 215 pump with 5k gsk. Just figuring our what would be best option when I assemble engine
__________________
1998 ram 2500-SOLD
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10-02-2012, 08:51 AM
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#4
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Name: DISTURBED
Title: YEA WE RIDE THE SHORT BUS
Status: Not Here
Join Date: Nov 2007
Location: Winchester, Va
Member`s Gallery
Posts: 6,417
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Stock cam needs nothing more then the 60#
__________________
Thanks, Jeremy
01 CTD Retired sled puller, dedicated "Twin Turbo" tow rig
96 CTD "TOO" Disturbed 3.0 - Built by Disturbed Diesel Performance
96 CTD "The Sickness" 2.6/2.8- Built by Disturbed Diesel Performance
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10-02-2012, 12:45 PM
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#5
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Name: 91shelbydaytona
Title: Too Much Time
Status: Not Here
Join Date: Nov 2008
Location: Viroqua, WI
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Posts: 334
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Ive heard many people say 4k rpm is the limit with them but then again tons of people run over 4k without issues including myself. I would say the locks will pull through the retainers before you have a spring issue
__________________
Chris
94 1500 RCSB 12v, Joker Fabrication, Farrell Diesel Service, Hamilton Cams, Airdog
11.40 @ 119.28
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10-02-2012, 01:03 PM
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#6
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Name: ENafziger
Title: Too Much Time
Status: Not Here
Join Date: Oct 2008
Location: Knoxville, TN
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Posts: 843
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60 lb does not mean 60 lbs...it means 60 lbs over stock, right?
Does 150 lb mean 150? ...or does it mean 150# over stock?
__________________
2006 Dodge 3500 SRW, 62/476 twins, Flux 2.5s, G56, Carli 2.65s, etc. Jer. 33:3
2003 Ford Excursion, '97 Cummins P-Pump, HX35/475 twins, studded and o-ringed, ZF6/271, forged Rickson 19.5s.
1991.5 W250, NV4500, Rickson 19.5s, HE351, long travel suspension build
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10-02-2012, 01:44 PM
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#7
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Name: Timebomb
Title: Bootney Lee Fonsworth
Status: Not Here
Join Date: Apr 2007
Location: The Swap Meet
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Posts: 2,069
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Correct, the 60# is around 155lb on the seat Stock is around 95lb on the seat.
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95 12v 4x4 Ex Cab Auto
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10-04-2012, 10:39 PM
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#8
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Name: Tate
Title: What?
Status: Not Here
Join Date: Nov 2007
Location: Airdrie, Alberta
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Posts: 3,419
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Quote:
Originally Posted by ENafziger
60 lb does not mean 60 lbs...it means 60 lbs over stock, right?
Does 150 lb mean 150? ...or does it mean 150# over stock?
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IIRC, the 60 lbs. designation was for the exhaust valves with an exhaust brake, they would hold back 60 psi of back pressure without blowing open.
__________________
'98 3500 2wd, 24v, 5 spd, p-pumped
'98 2500 4wd, 12v, 6 spd, VP'd 
'02 VW Jetta, 5 spd.
My p-pump conversion pics
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