Thick Valve Spring Shims?

Ed Wright · 01-06-2010, 10:00 AM

Quote:

Originally Posted by STK4340

Have you thought about using -0.050" locks and only one 0.060" shim? Just a thought...

That is what I use. If that and a locating spring seat still won't get it I add shims. The -.050" locks get you more clearance from the rockers too.

STK1217 · 01-06-2010, 11:38 AM

What dia. springs are you using.

Chad E532 · 01-06-2010, 02:42 PM

I am running 1.500" OD dual springs. The heads were setup for 1.950 installed height with the hardened locators and 0.030" of shim already under the locators. They are AFR 195 Eliminator heads that run 8mm 10 deg retainers and keepers so I am not sure if anyone makes the -0.050" drop retainers. I looked at AFR and they only list the "standard" height versions. I originally bought the heads assembled with their springs, but on this winters refurb I was planning on installing the correct springs from the cam card which run the different height.
Thanks
Chad

Ed Wright · 01-06-2010, 02:54 PM

Quote:

Originally Posted by Chad E532

I am running 1.500" OD dual springs. The heads were setup for 1.950 installed height with the hardened locators and 0.030" of shim already under the locators. They are AFR 195 Eliminator heads that run 8mm 10 deg retainers and keepers so I am not sure if anyone makes the -0.050" drop retainers. I looked at AFR and they only list the "standard" height versions. I originally bought the heads assembled with their springs, but on this winters refurb I was planning on installing the correct springs from the cam card which run the different height.
Thanks
Chad

Comp does. I use 1.5" PAC springs, and Comp has both the retainers and both -.050" and +.050" locks

Jeff Lee · 01-07-2010, 01:19 PM

Use a spring cup. Buy or have one made if necessary. It will help control the spring, especially if you have multiple shims under the spring right now. I picked up some good RPM when I made the change on my stocker.

01-06-2010, 11:38 AM	#2
STK1217 Member Join Date: Nov 2006 Posts: 137 Likes: 48 Liked 10 Times in 7 Posts	Re: Thick Valve Spring Shims? What dia. springs are you using. Last edited by STK1217; 01-06-2010 at 11:42 AM.

01-06-2010, 02:42 PM	#3
Chad E532 Member Join Date: Jul 2008 Location: Lindstrom MN Posts: 156 Likes: 7 Liked 54 Times in 7 Posts	Re: Thick Valve Spring Shims? I am running 1.500" OD dual springs. The heads were setup for 1.950 installed height with the hardened locators and 0.030" of shim already under the locators. They are AFR 195 Eliminator heads that run 8mm 10 deg retainers and keepers so I am not sure if anyone makes the -0.050" drop retainers. I looked at AFR and they only list the "standard" height versions. I originally bought the heads assembled with their springs, but on this winters refurb I was planning on installing the correct springs from the cam card which run the different height. Thanks Chad

01-07-2010, 01:19 PM	#5
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Thick Valve Spring Shims? Use a spring cup. Buy or have one made if necessary. It will help control the spring, especially if you have multiple shims under the spring right now. I picked up some good RPM when I made the change on my stocker. __________________ Jeff Lee 7494 D/S '70 AMX