what valves springs should i use?? for 15-18 psi - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 14 Old 09-28-2011, 02:26 PM Thread Starter
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what valves springs should i use?? for 15-18 psi

hey guys what valve springs should i use>> 2004 gt turbo. im going for 600rwhp. 15-18 psi should get me there.


im going to be using stock cams. and stock heads


what seat pressure ???

is there a spring kit that out there that has everything a need??
(springs,seats,retainers,locks)


im also going to order valve guides through mmr. (only 100 bucks)


any help would be great.


2004 Mustang Sonic Blue - turbo- - MMR 4.75 900
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post #2 of 14 Old 09-28-2011, 06:32 PM
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custom 135lb stage 3 boost springs from mhs with the matching sized titanium retainers. they are oversized


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post #3 of 14 Old 09-28-2011, 07:02 PM Thread Starter
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custom 135lb stage 3 boost springs from mhs with the matching sized titanium retainers. they are oversized


ok great thank you. i dont know much about heads.

will these valves work with my stock cams? and since there over sized, is there any machine work need for them to fit???

im assuming i should buy new valve guides as well right??

just wondering thank you

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post #4 of 14 Old 09-28-2011, 07:40 PM Thread Starter
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are these any good????

Patriot Performance Valve Spring Kit

Patriot Performance 4.6L 2V Mustang Valve Spring Kit (99-04 Mustang GT) at AmericanMuscle - Free Shipping!

115 lbs on the seat and 285 lbs open
also has Titanium Retainers


also what does it mean that head machining is required?? what needs to be done for them to fit??

sorry guys, im just trying to learn

thanks brett

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post #5 of 14 Old 09-28-2011, 11:28 PM
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well i believe the heads need to be clearanced to fit the larger springs. im not sure exactly how because i had mine done for me. Maybe Nick Mckinney will chime in and say what exactly needs to be done. I would go with the most seat pressure you can find. I believe the Comp high load springs have 125lbs of pressure. Bronze valve guides would be recommended for your combo

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post #6 of 14 Old 09-29-2011, 12:47 PM
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Get comp cams 120lb high load valve springs and be done!!!!!!

Voodoo racing innovation built 4v , powerglide, borg warner s475 at 29psi, custome turbo kit , pro efi ecu, Aeromotive fuel pump, aeromotive fuel rails, id 1000 injectors, e85. Best to date 1.36 60'
Best pass to date 8.92 at 156mph. Best 1/8 mile 5.6at 127 mph.
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post #7 of 14 Old 09-29-2011, 01:56 PM Thread Starter
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Get comp cams 120lb high load valve springs and be done!!!!!!
where can i order these at.


also do they come as a kit, with the seals, retainers,locks? or do i use my stock ones?

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post #8 of 14 Old 09-29-2011, 03:14 PM
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where can i order these at.


also do they come as a kit, with the seals, retainers,locks? or do i use my stock ones?
I got mine from jegs, use everything stock but retainers. Here are the links

Comp Cams 26125-16 Comp Cams Beehive Valve Springs

Retainers at summit
COMP Cams 792-16 - COMP Cams Steel Valve Spring Retainers - Overview - SummitRacing.com

Voodoo racing innovation built 4v , powerglide, borg warner s475 at 29psi, custome turbo kit , pro efi ecu, Aeromotive fuel pump, aeromotive fuel rails, id 1000 injectors, e85. Best to date 1.36 60'
Best pass to date 8.92 at 156mph. Best 1/8 mile 5.6at 127 mph.
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post #9 of 14 Old 09-29-2011, 04:44 PM Thread Starter
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I got mine from jegs, use everything stock but retainers. Here are the links

Comp Cams 26125-16 Comp Cams Beehive Valve Springs

Retainers at summit
COMP Cams 792-16 - COMP Cams Steel Valve Spring Retainers - Overview - SummitRacing.com



ok great thank you very much for the links.


i think im also going to replace the seals, and guides as well. only about 120 bucks to replace with new seals and bronze guides

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post #10 of 14 Old 09-29-2011, 06:49 PM
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careful with using high pressure springs on the factory valves. you can break a valve and if that happens the head and piston are going to get damaged as well. i would recommend stainless valves also. i know thats not what you want to hear though.



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post #11 of 14 Old 09-29-2011, 06:56 PM Thread Starter
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careful with using high pressure springs on the factory valves. you can break a valve and if that happens the head and piston are going to get damaged as well. i would recommend stainless valves also. i know thats not what you want to hear though.


lol no i deff dont want that to happen lol what valves do you recomend?

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post #12 of 14 Old 09-29-2011, 08:36 PM
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I would go with Manley stainless steel valves. Thats what I have and they are good quality

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post #13 of 14 Old 03-25-2013, 09:28 PM
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IM thinking about running the basically same set up but, I don't want a broken valve so I should go with 95# instead of the 125lb I picked out?
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post #14 of 14 Old 03-25-2013, 10:38 PM
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I run the high loads with .030 shims under them to bump the spring pressure up even higher. You have no worries about breaking a valve due to the springs.

2002 2V TF heads Custom Edelbrock NA SVT Cams
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