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Re: stealth head cracked
[Re: Quicktree]
#852856
11/15/10 01:45 AM
11/15/10 01:45 AM
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Joined: Jan 2003
Posts: 4,323
NY NY
340duster340
master
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master
Joined: Jan 2003
Posts: 4,323
NY NY
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sorry to hijack the thread, but is anyone running the pro-comp heads?
i would love to see one of the mopar mags do a chineese 440 build .... only thing American made would be the block.
1966 Dart GT
...down to only 1 mopar for the first time in 15 years!
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Re: stealth head cracked
[Re: 340duster340]
#852857
11/15/10 07:22 AM
11/15/10 07:22 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
sorry to hijack the thread, but is anyone running the pro-comp heads?
i would love to see one of the mopar mags do a chineese 440 build .... only thing American made would be the block.
do you love the chinese? 
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Re: stealth head cracked
[Re: 340duster340]
#852859
11/15/10 08:57 AM
11/15/10 08:57 AM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
sorry to hijack the thread, but is anyone running the pro-comp heads?
i would love to see one of the mopar mags do a chineese 440 build .... only thing American made would be the block.
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Re: stealth head cracked
[Re: 340duster340]
#852860
11/15/10 10:52 AM
11/15/10 10:52 AM
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Joined: Jun 2010
Posts: 591
Champion City
The Sphinx
mopar
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mopar
Joined: Jun 2010
Posts: 591
Champion City
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Quote:
i would love to see one of the mopar mags do a chineese 440 build .... only thing American made would be the block.
They did, not sure if the cheap valve in the cheap aluminum head broke, or the cheap rocker arm broke, or the cheap eagle connecting rod broke or the cheap aluminum water pump housing with it's restrictive ports caused the thermo-nuclear meltdown.
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Re: stealth head cracked
[Re: The Sphinx]
#852861
11/15/10 01:41 PM
11/15/10 01:41 PM
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Joined: Feb 2007
Posts: 5,080
organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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situation deteriorating, over?
for what is the good life if not doing things thoughtfully?
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Re: stealth head cracked
[Re: topside]
#852863
11/15/10 03:14 PM
11/15/10 03:14 PM
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Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
@#$%&*!
New user name, Same old jerk!
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New user name, Same old jerk!
Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
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Quote:
...I really like the idea of a stock-looking aluminum head with good architecture...
I wonder how hard it would be to program a CNC to make the Eddies look like a '906?
 
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Re: stealth head cracked
[Re: @#$%&*!]
#852864
11/15/10 04:33 PM
11/15/10 04:33 PM
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Joined: Jan 2003
Posts: 75,070
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
Quote:
...I really like the idea of a stock-looking aluminum head with good architecture...
I wonder how hard it would be to program a CNC to make the Eddies look like a '906?
Not very , but you then would need to ADJUST the surface to LOOK like cast iron.
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Re: stealth head cracked
[Re: topside]
#852866
11/15/10 07:20 PM
11/15/10 07:20 PM
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Joined: Sep 2003
Posts: 2,966
Wendy, I'm home.
dstryr
master
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master
Joined: Sep 2003
Posts: 2,966
Wendy, I'm home.
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If you're going to use Stealth heads then 1) buy them unported and leave them like that or 2) buy them with the CNC porting done. Brandon has replaced the cracked heads so have him stand behind the one you are going to use on your engine. If one breaks and you have had your LOCAL guy do the porting you'll be that much more in the hole to have one head re-worked.
dstryr, since 1986.
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Re: stealth head cracked
[Re: 70Cuda383]
#852870
11/16/10 01:31 AM
11/16/10 01:31 AM
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Joined: Jan 2003
Posts: 5,445
So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,445
So Cal
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Quote:
why are they cracking? too much power? un-true surfaces being clamped down causing too much flex?
or are they simply too brittle?
anyone done any analysis on them to find out why they've cracked?
They crack due to an ineffective QA process in China. In China it is pertinent to have a local QA inspection team that monitors the entire process from raw material procurement to the actual casting..
Without this and a tite audit process, all bets are off.
The China sources will do all sorts of short cuts & tricks when they are not titely monitored and controlled..
We have been sourcing electronic components from China for over 20 years with an average annual $ value of >$10 million. So yes we know something about the Chinese system & culture.. 
Just my $0.02... 
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Re: stealth head cracked
[Re: dOoC]
#852872
11/16/10 06:24 AM
11/16/10 06:24 AM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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With a few exceptions, Stealth heads only fool non-expert folks, who are almost all just as easily fooled by any of the other aluminum heads when painted with a good coat of Hemi orange. All it takes is a quick glance along the intake manifold or lower headbolt bosses for a Moparts member or a savy Mopar-knowledgable buff to spot the Stealths. Overall, for the money, they are a great head.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: stealth head cracked
[Re: jbc426]
#852873
11/16/10 09:52 AM
11/16/10 09:52 AM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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Quote:
With a few exceptions, Stealth heads only fool non-expert folks, who are almost all just as easily fooled by any of the other aluminum heads when painted with a good coat of Hemi orange. All it takes is a quick glance along the intake manifold or lower headbolt bosses for a Moparts member or a savy Mopar-knowledgable buff to spot the Stealths. Overall, for the money, they are a great head.
True but for the other 90% of the car guys "non-mopar" they think 318's are big blocks so if they do see a difference tell tell them its special mopar head desigh of a fuelie head 
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Re: stealth head cracked
[Re: 540challenger]
#852874
11/16/10 01:26 PM
11/16/10 01:26 PM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
Quote:
With a few exceptions, Stealth heads only fool non-expert folks, who are almost all just as easily fooled by any of the other aluminum heads when painted with a good coat of Hemi orange. All it takes is a quick glance along the intake manifold or lower headbolt bosses for a Moparts member or a savy Mopar-knowledgable buff to spot the Stealths. Overall, for the money, they are a great head.
True but for the other 90% of the car guys "non-mopar" they think 318's are big blocks so if they do see a difference tell tell them its special mopar head desigh of a fuelie head
Yah, especially those 'big block" 318 poly motors.... Here's a "before paint" shot of my Indy EZ's.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: stealth head cracked
[Re: jbc426]
#852875
11/16/10 01:31 PM
11/16/10 01:31 PM
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Joined: Mar 2007
Posts: 3,285
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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Quote:
Quote:
Quote:
With a few exceptions, Stealth heads only fool non-expert folks, who are almost all just as easily fooled by any of the other aluminum heads when painted with a good coat of Hemi orange. All it takes is a quick glance along the intake manifold or lower headbolt bosses for a Moparts member or a savy Mopar-knowledgable buff to spot the Stealths. Overall, for the money, they are a great head.
True but for the other 90% of the car guys "non-mopar" they think 318's are big blocks so if they do see a difference tell tell them its special mopar head desigh of a fuelie head
Yah, especially those 'big block" 318 poly motors. Here's a before paint shot of my Indy EZ's
...and here's a shot of my "stealth" Indy EZ's.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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