Re: Hughes Valves
[Re: 340king]
#1441190
05/24/13 01:11 PM
05/24/13 01:11 PM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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A close friend of mine bought a set of CNC edelbrocks from hughes with their valves. It broke a valve shortly after install, not many passes on it, with a solid flat tappet.
Personally I'd go with Ferrea or Manley, its not worth the risk. I have broken a manley valve, and when I redid my current heads I still opted to have manleys put back in.
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Hughes Valves
[Re: BradH]
#1441192
05/24/13 05:24 PM
05/24/13 05:24 PM
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Joined: Nov 2006
Posts: 1,086 Baton Rouge, La.
StandOnIt
super stock
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super stock
Joined: Nov 2006
Posts: 1,086
Baton Rouge, La.
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I bought a set of magnum heads from a guy around here that had those valves with the Hughes hyd roller valve springs installed. More than half the valves were bent and would not come out of the guides. Was run with a Comp cam around .570ish lift if I remember correctly. I dont know what rockers he used tho. I run the Hughes magnum bar 1.65 ratio rockers and my valves are steady as a rock in my EQ heads. I dont have the Hughes valves in mine tho.
76' Volare, 5.9 magnum w/Iron heads. New best 10.68 at 123 mph 1/4 mile.
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Re: Hughes Valves
[Re: Triple Threat]
#1441193
05/24/13 06:24 PM
05/24/13 06:24 PM
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Joined: Jul 2005
Posts: 134 Flyover Country
340king
OP
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OP
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Joined: Jul 2005
Posts: 134
Flyover Country
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Quote:
A close friend of mine bought a set of CNC edelbrocks from hughes with their valves. It broke a valve shortly after install, not many passes on it, with a solid flat tappet.
Personally I'd go with Ferrea or Manley, its not worth the risk. I have broken a manley valve, and when I redid my current heads I still opted to have manleys put back in.
I have looked for anything in the stock 1.92" diameter and haven't found a single source. I would certainly use Ferrea if they made a valve that matched the parameters that we are faced with.
We can use a Chevy 1.94" intake valve, but we would have to turn it down to the 1.92" so that the valve job, which is restricted to 1/4" below the top of the seat cut for valve job, can be made to fit. A better valve job using just the 60° - 45° - 30° angles just fits. So going to a larger valve is out of the question.
I am open to any other sources also. I just want the best reasonably priced valves I can find for this engine. $20 a valve is what I would call reasonable.
Thanks for the replies.
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Re: Hughes Valves
[Re: 340king]
#1441197
05/24/13 09:19 PM
05/24/13 09:19 PM
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Joined: Feb 2005
Posts: 20,201 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,201
PA.
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There are so many no-name stainless valves on the market now so you have to be careful. We upgraded my sons small block Edelbrock heads a few years ago and one of his valves chunked off on #3 cylinder. We lucked out as we pulled the head, got a new valve and I did a valve job on it, assembled the head and before we installed the head I turned the engine over. Or tried to turn it over as the piece of valve went thru the victor intake and dropped in a cylinder on the other side. We pulled that head, removed the piece, inspected the head, assembled everything and raced the next weekend. Like I said WE LUCKED OUT. Call either Todd@CompetitionWedge or Dan@Performance Only and see if they can find you something in the REV valve line. Pretty sure they both use and recommend them.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Hughes Valves
[Re: VernMotor]
#1441200
05/24/13 11:19 PM
05/24/13 11:19 PM
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Joined: Jan 2003
Posts: 7,131 Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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Aren't Magnums 8mm and not 5/16?
Drag Week 2011 - 77th place - DD Drag Week 2012 - 2nd place SRBB N/A Drag Week 2014 - Kapooya RMRW 2018 RMRW 2020
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Re: Hughes Valves
[Re: Crizila]
#1441204
05/25/13 02:28 PM
05/25/13 02:28 PM
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Joined: Jul 2005
Posts: 134 Flyover Country
340king
OP
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OP
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Joined: Jul 2005
Posts: 134
Flyover Country
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Thanks Crizila, that was the kind of information that I was looking for. I hate to be the Guinea pig!! We are looking at all angles, including having someone fabricate custom valves for this combo. The Hughes valves are a step up from anything else that I can find when it comes to installed height and such. Even with that, there could be some improvement for what we are planning to do, so we may opt in the end to go with a custom set of valves. Time and money sure will dictate that some. Thanks for the replies.
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Re: Hughes Valves
[Re: 340king]
#1441205
05/25/13 02:54 PM
05/25/13 02:54 PM
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Joined: Nov 2004
Posts: 3,544 Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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What I/H are you using? Are the spring pads uncut? What legth valve is it you need?
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Hughes Valves
[Re: CompWedgeEngines]
#1441206
05/25/13 05:09 PM
05/25/13 05:09 PM
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Joined: Jul 2005
Posts: 134 Flyover Country
340king
OP
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OP
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Joined: Jul 2005
Posts: 134
Flyover Country
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Quote:
What I/H are you using? Are the spring pads uncut? What length valve is it you need?
We are shooting for around the 1.800" IH range. The spring possibilities really open in that range. We haven't touched the heads with any tooling, other than to see what valve cutter insert might work best on the Serdi (by hand). I haven't looked over the spring pad thickness possibility yet. We will look at that as an option to get the best spring IH. The Hughes valves are 5.014" OAL from what I measured. That is 0.100" longer than stock by advertisement. That should set us up at 1.750" for IH. So a 5.065" OAL might fit the bill, but it might not also hurt to have some more valve above the retainer, so just say 5.100" OAL should be close.
It is the old pluses and minuses game here. Taller valves helps spring selection and stud clearance, but hurts push rod clearance on intake face of head. It also adds weight, albeit a small amount.
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