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Discussion Starter #1
Can you please list the Pros and Cons of having Headers over stock exhaust manifold?

P.S. Please no promoting of one brand over the other... ie. kooks are better than JBA's

Thanks, Mike
 

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jba's are said to give ya about 10 horsepower to the wheels...... way less than the advertised increase, of course. and im sure it will make your car sound better with a full exhaust

those are 2 pros

2 cons would have to be
people say that headers have bad cracking problems, and also they are like almost IMPOSSIBLE to install without pullin the motor...............they may be impossible to install. i dunno.

i havent ever installed these or heard an mn12 4.6 with headers. so i am goin by what i have heard.

you can xtrude hone the manifold for non cracking and more power.
 

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Overkill Fetish Freak
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First off, Kooks are better than JBA's.

Pros...

Headers
Flow, Power, Sound.

Extrude Honed Stock Manifolds
Better then stock flow, Non-Cracking, Stock part

Cons...

Headers
Install from hell if the motor is in the car, Clearence issues, Cracking (JBA'S), Poorly made (JBA's), Collector's can be a little off (JBA's), Prone to blowing a gasket/Bolts loosen up.

Extrude Honed Stock Manifolds
Install from hell if the motors in the car, Not enough flow for serious HP.


At least that's how I've seen it.
 

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headers is to top fuel dragster as stock manifolds is to escort.

like biggie said, kooks are better tha jba, and all that other mumbo jumbo he posted below that, talking about headers flow more air and produce more power and sound etc...
 

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JBA's were the worst $1100 I've ever spent. That's 500 or so for the headers and 600 for the install when I couldn't handle it myself. I noticed absolutely no gains whatsoever on my stock heads. For the same money I could have had heads ported or bought an MMX driveshaft, Mk 8 converter and gears. Tell you which one I wish I'd done....Can't tell you anything about the Kooks.
Will
 

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Discussion Starter #7
thank you very much for all the responses. Im getting the JBA ones from someone on here for pretty cheap compared to what they are new. They already have the welds done where they are most likey to crack(a problem that i heard taht occurs often on them). Plus i am going to the junkyard soon to see if i can find me a decent pair of some PI heads. Im looking to get my car in the low 14's high 13's with a N/A engine and then throw a AED on it and some nitrous(by then this car will not be a daily driver and just a track car). So im just buying the obvious stuff that will help me in the long run.

I still have a lot of maintance to do like the 60,000 mile checkup, oil change, fix the tranny....

Im planning on doing these items in this order...



1.Air silence removal (done) (Free

2.True dual exhaust w/flowmaster40's, two hi-flow cats, remove resonator/third cat (this weekend, mufflers coming in tommorow) ($80 for the mufflers and like 20 for piping etc. and like 30 for my friend that is going to help me- total $130)

3. Tranny cooler and J-mod (next week or maybe the week after) ($?)

4.Air intake (hopefully the MAC CAI but if not enough money at the point ill do the "civic mod") ( MAC $150 or Civic mod $50

5.UD pulleys ($70)

6.Lightning 90 MAF

7.180 Tstat

8.PI Heads PnP

9.Chip (tuned by ?, suggestions needed)

10.New wheels and tires



Does the Jmod and the tranny cooler require taking down the exhaust because if it does ill just go get that done before i get the exhaust done. How much does it cost for the parts to get it done, the j-mod ?

Im hoping to get all of this done by the end of this year, which is very possible if i keep the job that i have now. Ill also do clear corner and a few other cosmetic enhancements here and there. I would definetly like to have everything up to 6 done before winter starts(late october) so i can just leave the car in my friends shop to do the head swap and all.

I would like to also get some 3.73 gears put in that list too, but i wasnt too sure if that needed a chip of not. If it doesnt need a chip burn than i would like to get that put in there when the tranny and all that wonderful junk is being done.

Any other suggestion or parts that i would need and the approx. price for items 2-5 including the 3.73 gear if that doesnt need a chip would be greatly appreciated.

Thanks,

Mike
 

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The 90mm LMAF will require a new chip and it'll be way too big for an na engine with no head work. I'd either get an 80mm LMAF, GT MAF or wait for the supercharger to get that 90mm unit.
 

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you will need a chip and a little speedo tooth if you get the 3 73's other wise your speedometer will be off and you will top out at 90 mph............i did.

and if you get your cpu tuned, get it tuned by JERRY trust me. he tuned mine and its great.


and you will NEED it tuned if you get bigger maf and injectors.

the tranny cooler wont require you to remove anything really xcept the battery to make it easier................. and i don kno if you have to drop the xhaust to do the jmod, i doubt it........but i did the jmod with no xhaust on the car, so i dunno xactly.

the jmod in total cost me like 100 bux for parts. and im sure a shop will do labor for you for like 50 bux i guess. its not THAT hard if you do it yourself, just BE CAREFUL.

and i dont really have any advice on heads, ive never messd with my heads.

goodluck
 

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I know this is a bit off the original topic, but DjKlown asked, so...........

Within the last 2 months just did about everything you are planning to do...

I did the true duals, UD pulleys Mac CAI, first; then did Plugs, 9MM Ford wires, '02 GT MAF and chip.. pulled 206 rwhp / 184.7 ft-lbs (sae) on an under 90 degree day in FL.. there are those that say that's impossible with stock heads... I can fax you the graphs.... with stock tires (lotsa traction problems) another hot nite in FL, I turned 15.022

after that I installed a 70mm TB and lost power and the bottom end dropped out... (187 rwhp / 140 ft lbs...)

Took the 70mm TB off and put the stock one back on

Next I did 3200 rpm stall PI Torque Converter; Reinhart Automotive Bullet Proof Trans; Miramax Drive shaft; and 3.73 aluminum Cobra rear, and re-flashed the chip... Saturday, I pulled 204.5 rwhp / 174.7 ft-lbs (sae) ... it was over 90 degrees and the chip is running the engine a bit richer now for street use. I put some wider tires on, but still have traction problems, had kind of a bad launch day at the track, but turned 14.90... stock heads, stock cams...

I highly recommend you consider altering the order of your mods: do the '02 GT MAF (you don't need anything bigger until you do the heads/cams), plugs, wires and chip first.... the chip is the single most effective mod you can make.......... I felt a "seat of the pants" improvement after the 02 GT MAF and the chip...

do the bolt-ons (pulleys, CAI, duals) as you can afford them.... you won't have to re-flash the chip until you do either the heads or differential... unless you go radical with a TC like I did and you want to drive on the street...

As far as who does the chip..... I'm in Florida, so I use Dennis Reinhart... Proximity makes it easier if the chip has to be tweaked (and it may)... where you are at, I'd check with Fordchip.com... they are the "source" for chips for our cars...

About the headers.... I've got Kooks sitting in my garage waiting for Renegade heads to attach them too, they are extremely well made, thick flanges, high quality stuff... I actually ordered JBA's and was convinced by the negative experiences of many to switch... of course if someone were giving me a set for nothing..... I'd still have to consider the install... if I'm paying, or doing it myself.. wouldn't want to have to do it twice because the headers had leaks or cracks...

as for the install... check with JL, he just finished installing a pair of Kooks. It was a 7 hour install job on a lift....
If you really want to know what this all cost, send me a PM or e-mail and I'll tell you what I paid... I will tell you here that the true duals, pulleys, MAC CAI, 02 GT MAF and chip were the cheapest things I did and the most noticable gains........
 
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