Comp Cams Valve Springs - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 04-06-2014, 12:58 PM Thread Starter
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Comp Cams Valve Springs

So, simple question (if those actaully exist) should I swap out my valve springs for the 910 springs on riff raff with the mods I have listed below? Planning on a 38r down the road to. On a side note, anyone know the approximate wait time on a BTS trans as of now? I'm so close to being able to afford a new trans. But then again there aint anything wrong with mine now so I may try and hold out. Thanks for the help

2003 Excursion Eddie Bauer 7.3
6 Inch ProComp Lift, 315/75/16 BFGoodrich All Terrain Tires, BTS Transmission, 175/100 P.I.S. Injectors, PMF Traction Bars, Garrett 38r, International Up Pipes, Dyno Proven Tunes, 6.0 Transmission Cooler, CCV mod, MBRP 4" Turbo-Back Exhaust, RiffRaff Over Boost Code Regulator, Moto Metal MO951 Black Rims, Dual Sky Jacker Steering Stabilizers, GlowShift Gauges, Mile Marker 449SS Lockout Hubs, 6637 Intake.

Putting this old PMR truck to the test....
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post #2 of 20 Old 04-06-2014, 05:46 PM
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What does upgrading valve springs on a diesel engine get you unless it's to fix valve float caused by an exhaust brake? These engines just don't rev very high.
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post #3 of 20 Old 04-07-2014, 06:12 AM
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Originally Posted by RAMKILLER97 View Post
So, simple question (if those actaully exist) should I swap out my valve springs for the 910 springs on riff raff with the mods I have listed below? Planning on a 38r down the road to. On a side note, anyone know the approximate wait time on a BTS trans as of now? I'm so close to being able to afford a new trans. But then again there aint anything wrong with mine now so I may try and hold out. Thanks for the help
I've heard guys with stock engines claim to feel and hear a difference with those springs. For how cheap they are I think its worth it for sure
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post #4 of 20 Old 04-07-2014, 11:00 AM
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We always recommend new comp springs with Inj's...

BTS is booking into July
We also can get you a BTS quicker..PM me if I can help
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post #5 of 20 Old 04-08-2014, 09:46 AM Thread Starter
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We always recommend new comp springs with Inj's...

BTS is booking into July
We also can get you a BTS quicker..PM me if I can help
Thanks for the info. I'll be sending you a PM prob in a couple of months to order one. Also do you know how difficult the springs are to change? Is there any special tools that would make life easier?

2003 Excursion Eddie Bauer 7.3
6 Inch ProComp Lift, 315/75/16 BFGoodrich All Terrain Tires, BTS Transmission, 175/100 P.I.S. Injectors, PMF Traction Bars, Garrett 38r, International Up Pipes, Dyno Proven Tunes, 6.0 Transmission Cooler, CCV mod, MBRP 4" Turbo-Back Exhaust, RiffRaff Over Boost Code Regulator, Moto Metal MO951 Black Rims, Dual Sky Jacker Steering Stabilizers, GlowShift Gauges, Mile Marker 449SS Lockout Hubs, 6637 Intake.

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post #6 of 20 Old 04-08-2014, 10:00 AM
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You can put each cyl on TDC then using a KD # 3271 and a small telescoping magnet remove the keepers. I also use compressed air at the same time using glow plus adapter.
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post #7 of 20 Old 06-02-2014, 07:02 PM
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You can put each cyl on TDC then using a KD # 3271 and a small telescoping magnet remove the keepers. I also use compressed air at the same time using glow plus adapter.
Would you recommend changing the valve springs on a 230K mile 7.3 before installing a exhaust brake? Also , are you changing just the exhaust springs or the intake too?

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post #8 of 20 Old 06-03-2014, 02:58 AM
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your changing all the springs, and you may look into shimming the springs also, increases seat holding pressure even with those springs, I think its .030 if I remember right, thats the shim thickness, summit sells them. I would do that if I was running above 40psi boost all the time, its the turbo drive pressure that you have to worry about. Thats what floats the valves.

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post #9 of 20 Old 06-03-2014, 04:41 AM
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DO not shim the springs, they would get to close to binding and no need.
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post #10 of 20 Old 06-03-2014, 04:51 AM
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Everybody but Cary will tell you to shim them because you want ~130 lbs of seat pressure.

Comp 910 Valve Spring Install How-To - PowerStrokeArmy

Damn good write up with pictures, then go to post #6 for the info on installed heights to get you to the proper seat pressure.

Or do what many do an just install the 0.030" shims and call it a day

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