Ferrea Valves
Thread Starter
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Ferrea Valves
Anyone running or know someone running the ferrea sodium filled
or hollow stem valves. They are lighter but I wonder if they will
hold up. I think ford used sodium filled valves in there old 427
nascar engine. opinions
or hollow stem valves. They are lighter but I wonder if they will
hold up. I think ford used sodium filled valves in there old 427
nascar engine. opinions
Last edited by Little Mouse; Jun 6, 2006 at 07:23 PM.
Thread Starter
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
The cost is a little more then regular stainless but no where near
as expensive as titanium. I'm looking for a way to extend the power range
of a cam and make it easy on the valve springs.
as expensive as titanium. I'm looking for a way to extend the power range
of a cam and make it easy on the valve springs.
Last edited by Little Mouse; Jun 6, 2006 at 07:41 PM.
Safety Car
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Alfa Romeo used sodium filled exhaust valves in all of their 4-cylinder engines from the mid-50's or so. I think WW II aircraft engines may have used them also. I vaguely remember my father talking about them. I never had any valve issues with the Alfa that I owned and never heard of any from the Alfa owners group.
Rick B.
Rick B.
Thread Starter
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Seems like I read the C5 ZO6 uses sodium filled valves, and the new
C6 ZO6 427 uses titanium valves, they did this on both engines to
help extend the rpm range of the hydraulic roller cams. I would like to
use the ferrea valves on a crane solid street roller. The open spring pressure
on the street solid roller cam is 402 pounds.
C6 ZO6 427 uses titanium valves, they did this on both engines to
help extend the rpm range of the hydraulic roller cams. I would like to
use the ferrea valves on a crane solid street roller. The open spring pressure
on the street solid roller cam is 402 pounds.
Last edited by Little Mouse; Jun 6, 2006 at 09:18 PM.
Le Mans Master
Joined: Jul 2001
Posts: 9,622
Likes: 16
From: absecon nj
I used them in all my circle track motors i built 7800 rpm was the norm. and never had any trouble with them.My brother just had them installed in his patriot heads last week.Youll get more rpm out of them.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I personally would not run springs of 400 lbs open on a SR cam. That puts valve float right at 7000 rpm new!
What happens two years down the road when they have lost 25#'s?
I had spring problems or should i say, valve float & piston contact. Never again! I buy quality stronger springs.
What happens two years down the road when they have lost 25#'s?
I had spring problems or should i say, valve float & piston contact. Never again! I buy quality stronger springs.
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Thread Starter
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Ok Gkull That is what crane recomends for the cam. Give me a
recomendation for a better quality spring. I would like to try
a beehive style spring with a titanium retainer and a fairly light
valve. They may not make a beehive spring with enough open
pressure I have not checked into them yet.
recomendation for a better quality spring. I would like to try
a beehive style spring with a titanium retainer and a fairly light
valve. They may not make a beehive spring with enough open
pressure I have not checked into them yet.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
They make behive for SR cams. They just cost $800. Mine are from comp cams.
Go to their list of springs and it's easy to figure out what you need from the charts.
Go to their list of springs and it's easy to figure out what you need from the charts.
A good quality old fashioned dual spring is 
Thread Starter
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Could be I don't Know, The first I heard of sodium valves being used
on american V8s Was when Ford used them on the 427 wedge
nascar motor in the early 60s to help valve spring life. They were
in the mark 4 version of the GT40s that won Lemans.
on american V8s Was when Ford used them on the 427 wedge
nascar motor in the early 60s to help valve spring life. They were
in the mark 4 version of the GT40s that won Lemans.
