Valve Spring Keepers

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JayBayBay
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Valve Spring Keepers

Post #1 by JayBayBay » Sun Nov 20, 2016 1:23 pm

Hey everyone, putting together my head after milling and some port work and ran into trouble with a keeper. Surprised I didn't notice it earlier but one and only one of my valve keepers is incorrect.

One on the left is the odd ball

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Anyone know the manufacturer/part number that was used for the aluminum heads or the specs so i can order up a new one? I know they're 5/16" stem but not sure on the degree. Thank you!

CNC-Dude
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Re: Valve Spring Keepers

Post #2 by CNC-Dude » Tue Nov 22, 2016 12:17 pm

They look like the average run of the mill stock replacement 7°lock used in any Chevy, Ford or Chrysler 11/32" valve stem. They are nothing special or custom. The oddball one if used in a matching set changes the installed height approx .050".
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RichCreations
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Re: Valve Spring Keepers

Post #3 by RichCreations » Thu Nov 24, 2016 5:36 pm

CNC-Dude wrote:They look like the average run of the mill stock replacement 7°lock used in any Chevy, Ford or Chrysler 11/32" valve stem. They are nothing special or custom. The oddball one if used in a matching set changes the installed height approx .050".

except they are 5/16, not 11/32... but they are 7 degree

CNC-Dude
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Re: Valve Spring Keepers

Post #4 by CNC-Dude » Thu Nov 24, 2016 6:12 pm

I saw he said 5/16" even when I was typing in 11/32" and it still didn't click.
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drag-200stang
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Re: Valve Spring Keepers

Post #5 by drag-200stang » Fri Nov 25, 2016 12:21 am

I think you are both right, I see both sizes.
66 Mustang Coupe
200 turbo w/lenco 4-spd
stock adj. rockers, stock timing set, ARP studs
best 1/4 mile ET 9.85/best mph 139 on 8 lbs progressing to 15 lbs boost
Went 9's when 10's was fast.

RichCreations
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Re: Valve Spring Keepers

Post #6 by RichCreations » Sun Nov 27, 2016 11:54 pm

drag-200stang wrote:I think you are both right, I see both sizes.

well, they are supposed to be 5/16...

JayBayBay
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Re: Valve Spring Keepers

Post #7 by JayBayBay » Sat Dec 03, 2016 2:36 pm

Thanks guys!

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wsa111
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Re: Valve Spring Keepers

Post #8 by wsa111 » Sat Dec 10, 2016 10:06 pm

Many camshaft mfgs. have 3 styles of keepers to allow different installed height for the retainers.
-.030-0-+.030.
Comp cams uses keepers for a 5/16 valve stems so you can use retainers designed for 11/32 or 3/8 valve stems.
The way to go is use valves .090" longer than stock so you have a better selection of valve springs for solid lifter cams which are aggressive & require 130# seat pressure & over 300# open pressure.
If you get an aggressive solid lifter camshaft with high spring pressures i would get the camshaft nitrided
hardened to prevent wear. Also need a hardened distributor gear.
67 mustang,C-4, with mod. 80 hd, custom 500 cfm carb with annular boosters, hooker headers, dual exh.-X pipe, flowmaster mufflers, HEI dist. Engine 205" .030" over with offset ground crank & 1.65 roller rockers. 9.5 comp., Isky 262 cam.
2003 Ford Lightning daily driver. Recurving Distributors. billythedistributorman@live.com
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JayBayBay
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Re: Valve Spring Keepers

Post #9 by JayBayBay » Tue Dec 13, 2016 4:45 pm

So it turns out the keepers are actually 10 degrees on the ones I got with the head (I learned the hard way).

drag-200stang
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Re: Valve Spring Keepers

Post #10 by drag-200stang » Tue Dec 13, 2016 5:01 pm

So are the retainers 10 or 7 degree ?
66 Mustang Coupe
200 turbo w/lenco 4-spd
stock adj. rockers, stock timing set, ARP studs
best 1/4 mile ET 9.85/best mph 139 on 8 lbs progressing to 15 lbs boost
Went 9's when 10's was fast.

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