headers, yay or nay? - JeepForum.com

 
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post #1 of 14 Old 06-07-2007, 02:11 PM Thread Starter
BlueFalcon
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headers, yay or nay?

Is there a substantial performance increase from adding headers and a better exhaust from stock? What do they change, and whats a good setup with inframe headers. Do you have to lift the whole engine out or can you squeeze em in somehow? yay or nay?

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post #2 of 14 Old 06-08-2007, 11:19 AM
cyclic17
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Last year, I upgraded to Borla headers, a K&N filter, and swapped an MC2150 carb on my 258. I've noticed a HUGE improvement over stock in both performance and mpg (believe it or not!).

In retrospect, I wish I would have done them separately to determine which swaps did what. But overall, I can now hit 65mph (although a little bit sketchy...) whereas before I could only hit 54mph downhill with a tailwind.

As far as installation, I did not have to pull the motor in order to install the headers.

*'81.5 CJ7, D300, T-5, 258ci, 4" BDS lift, 33 's on 15x10 Bajas, Narrowed Waggy D44 Front, Scout D44 rear w/ARB locker, Not-so-Painless Wiring Harness, Warn 8274, Borla Headers, MC2100 carb, Shrockworks sliders, KC's, Full cage

*RIP: '88 Comanche Chief, stock except for KC lights on rollbar and custom stereo.
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post #3 of 14 Old 06-08-2007, 11:47 AM Thread Starter
BlueFalcon
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what exhaust did you use with the headers?
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post #4 of 14 Old 06-08-2007, 03:22 PM
Mr.Crowley
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headers are good for all around performance...unless you re-cam it and swap in a huge carb it will only want to come alive in the upper rpm's....what engine we talking about anyways?

1980 cj7 258 weber,5'' of lift,33'' boggers,lincoln locked,lockright and a snorkle...Khaki Jeep Club member No. 1
1984 cj8 350 on 35's..the wifes
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post #5 of 14 Old 06-08-2007, 03:34 PM
4.7stroker
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Use the cheap ebay header, it is stainless steel, it has expansion joints so it won't crack, it is cheap, it will give you just as much power as any other, it is cheap, a lot of peeps on this forum have used it and like it and have I mentioned it is cheap?

Dwayne
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post #6 of 14 Old 06-08-2007, 06:09 PM
CJ Chet
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Quote:
Originally Posted by Mr.Tinkertrain
headers are good for all around performance...unless you re-cam it and swap in a huge carb it will only want to come alive in the upper rpm's....what engine we talking about anyways?
Depends what headers you get. Some are designed for high end, and some are designed for low end. I've had real good luck with Borla headers, the cheapo 4wd Parts cat-back, Weber 38/38 and K&N intake. Lots of low end, tons of torque!!

'86 CJ7
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post #7 of 14 Old 06-08-2007, 06:28 PM
Mr.Crowley
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yes the shorty 's tend to give you more low end,while the long tube full lengths are primaraly an upper rpm...then you have the the torque tube ones where theres a smaller pipe inside of the collector that steps it down to create back pressure...thats the key to low end torque...

1980 cj7 258 weber,5'' of lift,33'' boggers,lincoln locked,lockright and a snorkle...Khaki Jeep Club member No. 1
1984 cj8 350 on 35's..the wifes
Quote:
Originally Posted by Me
"offroad it, and wave then you might understand"
BLS Home Chapter... Where it all Started
:hahaha: yj

My low Buck Rock Crawler project Project..Stop by and check it out..The lizzard Queen
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post #8 of 14 Old 06-11-2007, 06:31 AM Thread Starter
BlueFalcon
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its a 304.
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post #9 of 14 Old 06-11-2007, 07:33 AM
BESRK
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Actually, longer small primary tubes tend to move peak torque down lower in the RPM range while shorter larger primaries move it up. That's why Top Fuel dragsters run huge short zoomies.

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..


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post #10 of 14 Old 06-12-2007, 01:24 PM
marmaduke
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I think edelbrock do a direct replacement header for a 304 that uses the same Y pipe and therefore the same exhaust, I'm afraid I went for the easy option and went for fenderwell headers and a pair of side pipes

'86 cj7, 360 cui, msd ignition, hedman htc's and still upgrading
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post #11 of 14 Old 06-13-2007, 02:01 AM
marmaduke
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Yep, 4wd sell them for $382, or you can get in frame dual outlet headers for $155

'86 cj7, 360 cui, msd ignition, hedman htc's and still upgrading
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post #12 of 14 Old 06-13-2007, 10:03 AM
gunsmokex
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Yeah you just have to decide if you want, in frame or outside frame headers. I'd definitely get them though, you'll notice an immediate difference. $ for performance its probably the best engine you'll do.
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post #13 of 14 Old 06-13-2007, 11:48 AM Thread Starter
BlueFalcon
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I would like in frame headers, just dont know what other parts I would need to get. I cant really afford the edlebrock ones, although they are nice.
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post #14 of 14 Old 06-14-2007, 07:58 PM
Mr.Crowley
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depending on engine and whatnot,pretty much a trip to the exhaust shop or running new pipes yourself..thats about it..

1980 cj7 258 weber,5'' of lift,33'' boggers,lincoln locked,lockright and a snorkle...Khaki Jeep Club member No. 1
1984 cj8 350 on 35's..the wifes
Quote:
Originally Posted by Me
"offroad it, and wave then you might understand"
BLS Home Chapter... Where it all Started
:hahaha: yj

My low Buck Rock Crawler project Project..Stop by and check it out..The lizzard Queen
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