|
Author
|
Topic: Valve Spring Installed Height
|
sprcoop
Gearhead Posts: 471
From: Tucson, AZ usa
Registered: Jan 2000
|
posted 06-08-2005 03:17 AM
   
I'm putting together a set of DOOE 351W heads. I'm using Erson E915021 springs that came in the kit for the cam. I couldn't find any specs on installed height other than a fairly vauge reference (on the Erson web site)to 69' 351W that they should be at 1.78 both intake and exhaust. I only got one intake installed and it came to 1.91. The heads have 5000 miles on a valve job but no hardened valve seats. It seems like a lot of material to take off the valve seats. Am I missing something here? How close to the recommended install height should they be? Does 1.78" sound right? I figure if they are giving heights in 1/100's of and inch they are supposed to be pretty close. I have a bunch of shims from 2 sets of heads but thought I would ask. Thanks.------------------
Jerry Cooper
Candy Apple Red, 66' Coupe, Wide Ratio Toploader
9" 3.10 peg leg now, soon to be Traction Loc
302 Block on the Engine stand
Soon to be 300+ HP
15" Styled Steel Wheels
IP: Logged |
sprcoop
Gearhead Posts: 471
From: Tucson, AZ usa
Registered: Jan 2000
|
posted 06-09-2005 01:38 AM
TTT, Anybody?
IP: Logged |
capri man
Gearhead Posts: 6624
From: doerun, ga.
Registered: Nov 2000
|
posted 06-09-2005 09:42 AM
this may not help but the install height on my crane springs is 1.80
IP: Logged |
RonnieT
Gearhead Posts: 835
From: Port Allen, La. 70767
Registered: Jun 99
|
posted 06-09-2005 10:20 PM
Sprcoop,Sounds like you have the wrong springs for your application. The Erson catalog shows 3 different installed height springs on thier site for a 351W.
They show the following:
E915021 1.680"
E915310 1.700"
E915051 1.900" It looks like your heads were set up for the 1.900" springs. ------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23
IP: Logged |
sprcoop
Gearhead Posts: 471
From: Tucson, AZ usa
Registered: Jan 2000
|
posted 06-09-2005 11:03 PM
Ronnie, shows what I know. Didn't know there was such a thing. So, that means that the heads must have been setup for 1.9 springs. That means that the spring seat boss has been ground down 1/4"? Or, the valve stems are 1/4" longer than stock? I had them machined for screw in adjustable studs so he had to grind the boss for the valve guides. He never asked about what springs I had. I'm thinking shimming almost 1/4" is out of the question and I am in the market for the correct springs. This is all I could find on the Erson (Mr. Gasket)site. Either I'm an idiot (entirely possible) or that site is not very easy to navigate. http://go.mrgasket.com/pdf/ford.pdf Where did you find your info? Thanks for the input. This project is going to happen one way or the other.
IP: Logged |
Mustangsandmore Forums
