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Iheartporn
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Discussion Starter · #1 ·
Who would win in a fight?

I'm guessing they're both fine products so based on that ASSumption which will flow more.
I know the Manley units neck down and have a tuliped exhaust. It seems like the Ferrea's have a flat bottom that might help flame travel.
Since I need to get new valves are there any factors other than price that might actually mean something?
 

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Yup,Manleys suck.
 

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Iheartporn
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Discussion Starter · #3 ·
Really? I thought the "severe duty" line was the standard hotrod valve for our engines?
 

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earlbrown said:
Really? I thought the "severe duty" line was the standard hotrod valve for our engines?
Nope.
There's a reason that Ferreas are used by a LOT of TR guys.
The metalurgy of the Manleys doesn't cut it[heads shifting,valves not sealing,etc.].
Do a search here for Ferrea valves in the tech section for the P/N's[I've got a set at the shop,but I forget the #'s off the top of my head].
 

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Older than dirt
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1 step further...

The Radius Kid said:
Nope.
There's a reason that Ferreas are used by a LOT of TR guys.
The metalurgy of the Manleys doesn't cut it[heads shifting,valves not sealing,etc.].
Do a search here for Ferrea valves in the tech section for the P/N's[I've got a set at the shop,but I forget the #'s off the top of my head].
Neither the "common", stainless Manleys, nor the Ferreas will live real long in EGTs above 1300*.

The exhaust valves in the Champion heads on my stage car were found to have:
1. Heads deformed to a "tulip" shape.
2. Of the 6, 5 had radial cracks.
3. All 6 had caused the seats to be beat out, due to the heads being deformed.

A call to Champion got a recommendation to the engine shop, to use Ferrea ICONEL valves. Only they would survive at the elevated turbo exh temps.

I had instrumentation on the car that indicated the EGT'S had not been over 1650*.

My story, and I'm sticking with it.... :yup:
 

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I have a bad taste for Manley's from playing with motorcycles...I am with Chuck.
 

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Old Buzzard said:
Neither the "common", stainless Manleys, nor the Ferreas will live real long in EGTs above 1300*.

The exhaust valves in the Champion heads on my stage car were found to have:
1. Heads deformed to a "tulip" shape.
2. Of the 6, 5 had radial cracks.
3. All 6 had caused the seats to be beat out, due to the heads being deformed.

A call to Champion got a recommendation to the engine shop, to use Ferrea ICONEL valves. Only they would survive at the elevated turbo exh temps.

I had instrumentation on the car that indicated the EGT'S had not been over 1650*.

My story, and I'm sticking with it.... :yup:
I believe it.
I remember a few years ago where a guy I know who races sprint cars was telling me that the guys were tearing the heads off the Manley valves.
They switched to Ferrea and the problem was solved.
I believe the stock exhaust valve is Inconel as well.
Good point Chuck.
 

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Iheartporn
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Discussion Starter · #8 ·
Old Buzzard said:
Neither the "common", stainless Manleys, nor the Ferreas will live real long in EGTs above 1300*.

A call to Champion got a recommendation to the engine shop, to use Ferrea ICONEL valves. Only they would survive at the elevated turbo exh temps.

I had instrumentation on the car that indicated the EGT'S had not been over 1650*.

My story, and I'm sticking with it.... :yup:

The only Ferrea's I could find for Buicks were the 6000 series. Are the inconels a diffrent series?
 

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I did a little searching and came with:

Hpp-f6237

Hpp-f6238

Hope that helps.
 

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Manley, and Milodon, have "extreme service" valves, made of high temp materials, including Inconel. Milodon claims theirs is good up to 1600 degrees. I guess the bottom line is similar to some other subjects. The right component from vendor "A", is almost always better than the wrong component from vendor "B", no matter which component we're discussing.
 

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Iheartporn
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Discussion Starter · #11 ·
Right. But what I've found alot of times is that you can get the good stuff for a SBC and just replacement series for our V6's.
I tend to look second and name brands now because if the 2nd place guy makes the good **** for our engines, it might work better than the top brand's average stuff.


That and I only want to do this engine once!
 

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Iheartporn
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Discussion Starter · #12 ·
The Radius Kid said:
I did a little searching and came with:

Hpp-f6237

Hpp-f6238

Hope that helps.

That's the part#'s for the 6000 stainless series. Are those the same ones Chuck is talking about?
 

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Listen Up Or "take It For What It's Worth"

:6: A local head man here that has been doing heads from at least the "60's" told me that the only exhaust valve that he has found that could standup to a 140 lbs. of boost, that's right 140 lbs.; four turbos in series on a diesel engine were REV brand inconel valves. TA Performance offers this exhaust valve at extra cost on their new SE & SI heads over the standard stainless steel exhaust valve.
The 1.60 dia. part number from the REV catalog to fit the TA head is CL1193 but this valve may not be the right length/dia. for your application. :6:

PS: He is old but he started young. He welds "rare" cast iron manifolds with a torch on a gas flame oven and programs his CNC machine along with all the other stuff you would find in a head shop, i.e. flow bench, etc. :D
 

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No matter what I did valve wise, I would coat the valve faces and coat the back and port on the exhaust side.
 

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Iheartporn
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Discussion Starter · #15 ·
I plan on coating both valve faces and the exhaust top too.

Just trying to decide what valve to order so I can finish my heads.
 

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Old Buzzard said:
Neither the "common", stainless Manleys, nor the Ferreas will live real long in EGTs above 1300*.

The exhaust valves in the Champion heads on my stage car were found to have:
1. Heads deformed to a "tulip" shape.
2. Of the 6, 5 had radial cracks.
3. All 6 had caused the seats to be beat out, due to the heads being deformed.

A call to Champion got a recommendation to the engine shop, to use Ferrea ICONEL valves. Only they would survive at the elevated turbo exh temps.

I had instrumentation on the car that indicated the EGT'S had not been over 1650*.

My story, and I'm sticking with it.... :yup:
Chucks right on the money. I had the severe duty exh valves. 4 out of 6 were slightly bent causing seal loss. I ran 1600-1650 egts. A call to Manley said those valves were no-no in the that EGT range. I now run the Inconels.
 

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Free Door Removal
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So I should replace my intakes too, or just the exhaust valves?

Joe
 

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Older than dirt
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If...

87bigcut said:
So I should replace my intakes too, or just the exhaust valves?

Joe
You plan on "leaning on it", I'd not do it with the stainless exh valves. :sw:
 

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