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by OldSkrote - 31/07/25 02:07 PM
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Aug 24th, 2023
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Joined: Nov 2016
Posts: 121
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Nov 2016
Posts: 121 |
Sorry if this has been covered in the past.
I have just started replacing the very worn CVH valve stem oil seals (head still on), and wondered whether it is worth fitting new valve springs ? If recommended, has anyone got a set they don't need ?
The engine has obviously been well looked after. There is no appreciable wear on the camshaft lobes, still giving a lift of just under 0.24 of an inch, and the compression is up to spec and equal across the cylinders, so I am tempted to leave well alone.
Thank you in advance, John.
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Joined: Aug 2015
Posts: 1,578 Likes: 105
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Aug 2015
Posts: 1,578 Likes: 105 |
How many miles has it done?
My thought would be to change the springs given that you are taking the old ones off.
There is a school of thought which says valve springs go weak over time rather than through fatigue but I've never really subscribed to it
Try Burton Power for a new set of springs
Arwyn
Last edited by Arwyn Williams; 21/11/17 05:57 PM.
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Joined: Nov 2016
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L - Learner Plates On
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It has done 100,000 miles, drives really nicely, and the engine has never been touched, except for regular servicing.
Given what I understand to be the already very high loads on a CVH valve gear, I feel reluctant to use non Ford springs in case they have a higher spring rate ? ie Burton's springs are described as heavy duty ?
John.
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Joined: Sep 2010
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Sep 2010
Posts: 2,397 Likes: 14 |
Jads , Burtons are THE Ford engine experts, real quality stuff and recommended.
1969 4/4
1995 plus 8
2002 Aero S1
2013 M3W
2014 Plus 8
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Joined: Apr 2013
Posts: 1,705
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
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Jads, I have used Burton springs on two CVH heads I have rebuilt and not had an issue
Graeme: 2011 +4
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Joined: Aug 2015
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
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100k?, well due for a change I'd reckon!
Heavy duty doesn't necessarily mean increased spring poundage.
Arwyn
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Joined: Nov 2016
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OP
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Thank's everyone, new springs ordered from Burton, and less than 1/2 the price of Ford.
John.
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