Valves
12-30-2004 | 08:40 AM
#1
Thread Starter
Registered
Joined: Jul 2004
Posts: 324
Likes: 0
From: STEVENS POINT WI
Valves
Can some one explain the difference between Ferera sever duty valves and inconell valves. i have a set of Ferera's and am considering running them on a 512 cid with a .613 .629 LSA 112 hyd roller cam with aluminum heads. Pro's and con's please......
12-30-2004 | 11:21 AM
#2
Registered
Joined: Jan 2001
Posts: 3,140
Likes: 0
From: Holland MI
Re: Valves
Manley Extreme duty is acceptable for exhaust usage, as is the Ferrea super alloy. The Ferrea valves were less expensive than the Manleys so I went with the Ferrea valves.
Inconel is a trademark name so some of the valve companies like Ferrea don't hang that name on their products.
Inconel is a trademark name so some of the valve companies like Ferrea don't hang that name on their products.
12-30-2004 | 03:49 PM
#5
Registered
Joined: Nov 2001
Posts: 3,393
Likes: 6
From: IBX
Re: Valves
I need 16 1.88 inconnel exhaust valves. Was planning to go with the extreme duty manleys, but ferrea would be good too. I've heard it said the ferrea flow better. Who has the best price on either? $280/8 is high in my opinion.
BT
BT
12-30-2004 | 05:06 PM
#6
Registered
Joined: Dec 2003
Posts: 8,306
Likes: 3
From: Los Angeles California
Re: Valves
Originally Posted by blue thunder
I need 16 1.88 inconnel exhaust valves. Was planning to go with the extreme duty manleys, but ferrea would be good too. I've heard it said the ferrea flow better. Who has the best price on either? $280/8 is high in my opinion.
BT
BT
12-31-2004 | 12:42 PM
#9
Platinum Member
Joined: Sep 2001
Posts: 5,769
Likes: 150
From: tn
Re: Valves
Ferrea SuperAlloy
Manley ExtremeDuty
They are BOTH "Inconel" valves.
They BOTH have hardened inserts in the tops of the stems.
They BOTH have stainless stems (not inconel) with the faces "somehow" metallurgically fastened to the stems (I've not heard anybody have trouble with the heads popping off either of them).
Any weight difference will be due to the amount of material (degree of cutback and face thickness), not due to the density of the material.
General consensus is that the Ferreas flow a little better.
Manley ExtremeDuty
They are BOTH "Inconel" valves.
They BOTH have hardened inserts in the tops of the stems.
They BOTH have stainless stems (not inconel) with the faces "somehow" metallurgically fastened to the stems (I've not heard anybody have trouble with the heads popping off either of them).
Any weight difference will be due to the amount of material (degree of cutback and face thickness), not due to the density of the material.
General consensus is that the Ferreas flow a little better.
12-31-2004 | 05:47 PM
#10
Toxic FORMULA
Joined: May 2002
Posts: 4,238
Likes: 1
From: pitman nj
Re: Valves
Originally Posted by blue thunder
I need 16 1.88 inconnel exhaust valves. Was planning to go with the extreme duty manleys, but ferrea would be good too. I've heard it said the ferrea flow better. Who has the best price on either? $280/8 is high in my opinion.
BT
BT
