Valve spring life span - Competition Diesel.Com

pxcr440 · 03-28-2019, 12:50 AM

,, just wondered. What most think is the effective life span of a set of maxspool dual valve springs is , I have a set I used on the street for 50k or so and now in a 3.0 truck seeing 4500+ rpm

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CorneliusRox · 03-28-2019, 03:51 PM

It depends on how much you compress them (cam/rocker). If you stay in between 20%-80% compression, a spring should last for just about ever.

jasonc · 03-28-2019, 04:08 PM

Add extreme heat into that, changes things.

Chassisman · 03-28-2019, 04:18 PM

Best to ask the manufacturer...Pro Stock cars only get a few runs on them @ 400psi and no wonder they break cams!

PRINCETON_JAKE · 03-29-2019, 01:13 PM

To get any real answers you’ll need to pull them out and check pressures. I know in non-diesel motorsports valve springs are changed frequently, and rocker arms backed off in the off season to relieve pressure. I’ve always thought it was strange no one talkes about life on springs in a diesel

pxcr440 · 03-29-2019, 01:58 PM

I have to pull injectors for testing in will just pull a set off one cylinder and check them

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03-28-2019, 12:50 AM	#1
pxcr440 Name: pxcr440 Title: Too Much Time Status: Not Here Join Date: Sep 2010 Member`s Gallery Posts: 254	Valve spring life span ,, just wondered. What most think is the effective life span of a set of maxspool dual valve springs is , I have a set I used on the street for 50k or so and now in a 3.0 truck seeing 4500+ rpm Sent from my SM-G960U using Tapatalk __________________ 03 QCSB-puller- going back to street 04 qcsb-daily/ tow rig 07 qcsb - "Late Night Hustle " 2016 ecipa/fantasy truck pullers points champ

03-28-2019, 03:51 PM	#2
CorneliusRox Name: CorneliusRox Title: Seasoned Rookie Status: Not Here Join Date: Dec 2012 Location: Detroit, MI Member`s Gallery Posts: 4,154	It depends on how much you compress them (cam/rocker). If you stay in between 20%-80% compression, a spring should last for just about ever. __________________ Corey - BSME '21 Tesla Model 3 Perf '22 DMax AT4 2500

03-28-2019, 04:18 PM	#4
Chassisman Name: Chassisman Title: Gator Out... Status: Not Here Join Date: Aug 2016 Member`s Gallery Posts: 266	Best to ask the manufacturer...Pro Stock cars only get a few runs on them @ 400psi and no wonder they break cams! __________________

03-29-2019, 01:13 PM	#5
PRINCETON_JAKE Name: PRINCETON_JAKE Title: Too Much Time Status: Not Here Join Date: Jan 2010 Location: Princeton Minnesota Member`s Gallery Posts: 1,125	To get any real answers you’ll need to pull them out and check pressures. I know in non-diesel motorsports valve springs are changed frequently, and rocker arms backed off in the off season to relieve pressure. I’ve always thought it was strange no one talkes about life on springs in a diesel __________________ silver 2006 ram 2500 4x4, crew cab short box, 48RE auto with "stuff" done, 5.9 with more "stuff" done

03-29-2019, 01:58 PM	#6
pxcr440 Name: pxcr440 Title: Too Much Time Status: Not Here Join Date: Sep 2010 Member`s Gallery Posts: 254	I have to pull injectors for testing in will just pull a set off one cylinder and check them Sent from my SM-G960U using Tapatalk __________________ 03 QCSB-puller- going back to street 04 qcsb-daily/ tow rig 07 qcsb - "Late Night Hustle " 2016 ecipa/fantasy truck pullers points champ

03-28-2019, 04:08 PM	#3
jasonc Name: jasonc Title: Too Much Time Status: Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	Add extreme heat into that, changes things.