alrighty, i am down to header choices and I still am confused as to which one flows the best. It seems the Borla 17039 has changed design and was no longer recomanded by Hesco. they suggested i look into the JBA1526S header. it seems this one has 1.5" primaries with a 2" collector. i have one coming next week just to take a look at it and see if it would work.
Does anybody have a good recomendation besides the junk APN headers. I just cant justify putting on an inferior product in a high fail rate application. I would rather utilize a brand I sell so warrantys are not a problem if needed. I would like to know what part numbers people are using for the split header design with two 2' collectors.
Header choice on a 4.7 MJ build
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1BADMUDR
- Posts: 9
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YJason
- Donator
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Re: Header choice on a 4.7 MJ build
I run a Borla 17202 heat wrapped to the collectors into 2-2" pipes into a 3" pipe to a 50 series flomaster, then 2.5" out the back.
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1BADMUDR
- Posts: 9
- Joined: November 27th, 2009, 10:33 am
- Stroker Displacement: 4.7
- Vehicle Year: 1988
- Vehicle Make: JEEP
- Vehicle Model: COMANCHE
- Location: Raleigh, N.C.
Re: Header choice on a 4.7 MJ build
what vehicle do you have that header in?? is it a cherokee or comanche? I am curious about it fitting in my slammed MJ utilizing a 94 block and head witha 00 XJ intake.
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seanyb505
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Re: Header choice on a 4.7 MJ build
Why are APN junk inferior products? Ive read more of borlas cracking and my APN has held up just fine for a few years now....
Now I can be like all those other awesome people with more than one Jeep in their sig, but now I have to say one of them is sold:(
97 XJ 4.6
90 MJ 4.0 - sold
I want to have as many Jeeps as children. DD, offroader, drag MJ and another one. 4=4
97 XJ 4.6
90 MJ 4.0 - sold
I want to have as many Jeeps as children. DD, offroader, drag MJ and another one. 4=4
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YJason
- Donator
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Re: Header choice on a 4.7 MJ build
Its in a YJ but they are short headers. They are made to have catalytic converts bolted to the bottom of them. I have mine running in front of the oil pan and doesn't hang any lower than the bottom of the oil pan.1BADMUDR wrote:what vehicle do you have that header in?? is it a cherokee or comanche? I am curious about it fitting in my slammed MJ utilizing a 94 block and head witha 00 XJ intake.
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lazybaka
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- Vehicle Year: 1998
- Vehicle Make: jeep
- Vehicle Model: cherokee
Re: Header choice on a 4.7 MJ build
where have you read about borla's cracking ?
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YJason
- Donator
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Re: Header choice on a 4.7 MJ build
I've heard that the Borla headers that are similar to the factory headers crack in the same place near the collector.
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Cheromaniac
- I live here
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Re: Header choice on a 4.7 MJ build
Some Borla headers have indeed cracked and a bad driver's side engine mount is often a contributing factor. I've had mine for 12 years and 156k miles with no problems.YJason wrote:I've heard that the Borla headers that are similar to the factory headers crack in the same place near the collector.
1992 XJ 4.6 I6 - 5MT - Stroker build-up, Stroker "recipes" Sold
1995 Mustang GT - 4AT - Modded Sold
2006 Mustang GT - 5MT - Modded Midlife Crisis Car
1995 Mustang GT - 4AT - Modded Sold
2006 Mustang GT - 5MT - Modded Midlife Crisis Car
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yuppiexj
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Re: Header choice on a 4.7 MJ build
A regular splashing of cold water during stream crossings tends to shorten the lifespan a bit.
TurboTom wrote:i will eat my words later if need be.
Proud owner of many stroker parts, that have not yet spontaneously assembled themselves.TurboTom wrote: Not sure of your rules...but you need to start with an engine that works best for the rules and cheat from there!
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