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post #1 of 23 (permalink) Old 08-09-2007, 10:44 PM Thread Starter
 
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Headers

I looked in a search and I could not find what I was looking for.

Where do you guys recommend getting headers? I am looking for my 94 Cougar with the 4.6. Thanks for the help!
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post #2 of 23 (permalink) Old 08-09-2007, 10:56 PM
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your choices are VERY limited, supercoupeperformance sells kooks mid length headers, which are the only good headers available but expensive, theres also jba shorties but they have issues and dont provide much gain.

the stock manifolds can be ported to flow very well also, and wont cost nearly as much as the other choices

-Matt
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post #3 of 23 (permalink) Old 08-09-2007, 11:29 PM Thread Starter
 
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thanks!
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post #4 of 23 (permalink) Old 08-14-2007, 07:51 PM
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is it even a noticable gain?
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post #5 of 23 (permalink) Old 08-14-2007, 08:39 PM
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Quote:
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is it even a noticable gain?
No.At least not with JBA's.Maybe there was a gain but I never felt it.Who knows.If I had to do it all over again I would go for the Kooks right away.

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post #6 of 23 (permalink) Old 08-14-2007, 08:53 PM
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Quote:
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is it even a noticable gain?
not on a stock engine, especially the craptacular F4 cast 94-95 boat anchor heads.




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post #7 of 23 (permalink) Old 08-15-2007, 12:21 AM
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On modified N/A 2V's, the Kooks are worth about 15 - 20 RWHP.

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post #8 of 23 (permalink) Old 08-15-2007, 01:27 AM
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The JBA's issues were fixed apparently. And I must say that there quality is very good too from the ones I have. As for gains, I’m sure kooks would be more. Tests with mustang manifolds vs. shorty headers (ford racing) showed almost no gain on the dyno. BUT the mn-12 manifolds are more restrictive then the mustangs.

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post #9 of 23 (permalink) Old 08-15-2007, 08:57 AM
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yeah, pinch bends do that


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post #10 of 23 (permalink) Old 08-15-2007, 02:55 PM
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kooks are the way to go.... but so expensive... coated headers, dead soft gaskets, long o2 sensors, adapters, adapter gaskets, probably time for new cats, stage 8 locking fasteners, than the actual task of installing them, and than the cost of a shop to do exhaust from the new cats back, money adds up quick

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post #11 of 23 (permalink) Old 08-23-2007, 10:08 AM
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Quote:
Originally Posted by Chris_Murder View Post
kooks are the way to go.... but so expensive... coated headers, dead soft gaskets, long o2 sensors, adapters, adapter gaskets, probably time for new cats, stage 8 locking fasteners, than the actual task of installing them, and than the cost of a shop to do exhaust from the new cats back, money adds up quick
I've got a set of Kooks, but haven't gotten around to installing them yet (I'm lazy) Got any suggestions on brands of gaskets/bolts? also, what do you mean by "Long 02 sensors"? Just longer wires? or am I missing something?

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post #12 of 23 (permalink) Old 08-23-2007, 03:12 PM
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yeah, the longer wires. the sensor is the same.

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post #13 of 23 (permalink) Old 08-23-2007, 03:26 PM
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I bought the longer sensors and I guess my car doesnt need them. The stock ones would have fit fine. But they were old so I replaced them anyway.

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post #14 of 23 (permalink) Old 08-23-2007, 04:44 PM
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Ryan - When I got O2 sensors for the 91, I had the option whether to get long or short wires. I went with the longer wires to be on the safe side You can always tuck the wire somewhere, but it's harder to make it longer.

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post #15 of 23 (permalink) Old 08-23-2007, 09:14 PM
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Quote:
Originally Posted by Silenced View Post
I've got a set of Kooks, but haven't gotten around to installing them yet (I'm lazy) Got any suggestions on brands of gaskets/bolts? also, what do you mean by "Long 02 sensors"? Just longer wires? or am I missing something?
Percy dead soft gaskets, stage 8 locking header bolts for the 4.6/5.4 ford modular motor, both availible on summitracing.com, those are the only way to go, you don't want an exhaust leak or to have to tighten them a few years from now because the bolts backed out do you?

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Current Best: 13.583 @ 103.74 10/2014.
227hp/241tq measured on calibrated mustang dyno, tested at full vehicle simulation with inertia enabled, no number skewing.
-2001 White Ford F-250 Super Duty 6.8 V10, 4-door, 4x4, Limo Tint, BFG KO2's, Bilstein 7100 Remote Reservoir Race Bypass Shocks, 6" Spring lift, Kenwood Double Din, K&N Intake, FlowMaster Exhaust
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post #16 of 23 (permalink) Old 08-23-2007, 09:17 PM
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I did not need the O2 extensions either for the upstream ones, but how the exhaust is, i need them for the rear o2's

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post #17 of 23 (permalink) Old 08-24-2007, 01:54 PM
 
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are the coated ones a must? or can you just buy the uncoated and spray paint them with some high temp paint?
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post #18 of 23 (permalink) Old 08-24-2007, 01:56 PM
 
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and also do you have links for the gaskets and bolts on summit?
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post #19 of 23 (permalink) Old 08-24-2007, 05:33 PM
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i bought the uncoated ones as i am totally broke and even buying them was a stretch. as for the bolts and gaskets, you dont need any parts for them b/c the person making your exhaust should have them.

97 Tbird 4.6
VT built block, fox lake PI heads
Vortech at XY psi
4.10's, KB boost a spark.
Yummy.
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post #20 of 23 (permalink) Old 08-24-2007, 11:03 PM
 
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nice did you like the uncoated ones? yeah i dont really feel like throwing down all that extra money for coated headers. how was the performance of them?
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post #21 of 23 (permalink) Old 08-24-2007, 11:58 PM
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There are options.

www.BRAINCOATING.com..... Powder & Ceramic Coating

WWW.PRESTONSBOOKS.BIZ..... Books at really great prices!
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post #22 of 23 (permalink) Old 08-25-2007, 03:03 AM
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tbirdbrain you make it tempting stop it. I'm trying not to spend money

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post #23 of 23 (permalink) Old 08-25-2007, 06:42 AM
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i have yet to fire the car up. today is actually the day where i get to.

97 Tbird 4.6
VT built block, fox lake PI heads
Vortech at XY psi
4.10's, KB boost a spark.
Yummy.
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