Looking for recommendations on Fenderwell Headers for a CJ-7. Hedman Headers are $139 in 4WD Hardware, very reasonable sounding to me. Anyone have any experience? I am going to change my in-frame POS to Fenderwells. In-Frame Headers Suck. All they are is a big headache.
Also, what have you used for exhaust off the Fenderwell Headers? 4WD also has the Hedman exhaust kit that includes non-baffled mufflers and side pipes. I can get a complete kit with Headers, Collectors, Mufflers, and Side Pipes for $239 in 4WD Hardware, all Hedman. Sound Good?
I run Cyclone fenderwells on mine(I think they were made by hedman) The last set I bought(about 3 years ago) was about $100 for mufflers I run a Cherry Bomb header muffler(similar to a glass pack, but with a collector flange on one end). It bolts right up to the collector(got it at Checker Auto parts about $30 each) From there a short piece of exhuast pipe and 90 degree elbow with a chrome tip on it. All exhaust parts available at auto parts store in exhaust bins(very inexpensive) I use the U-bolt style connectors to put it all together(never leaks) and hang it from the body on the "universal tail pipe hanger"(Just a piece of rubber with holes drilled in it) As far as noise they cherry's are a little loud, but I have never been pulled over with them!
Well, I have a 350 conversion CJ5 with the hedman fenderwell headers. First off, some cutting and modifications may be required to get the correct fit in the fenderwells. I had to cut a small amount off the inner fender so they do not rub. Aside from that they have been nothing but great. Great flow because if their long tube design. Now about the mufflers. The ones that come in the kit if you chose to buy them, well made but LOUD. For a daily driver bad call, not to mention depending on the officer of the law next to you in traffic you may get a ticket. If you have neighbors and you leave for work early these are a real bad idea. I had them for about a year and looked for replacements. I found the Purple Hornies that are a collector muffler and got those and they bolted right up. They were not as loud but still were too loud for a daily driver or an early morning driver. They stayed on for about a year. Looked again and found some Dynomax collector mufflers that could have been a bolt on, but I took the mufflers and the Jeep to the shop and they welded it up real nice and made some real nice turnouts for me. If I had to do it all over again I would just get the headers by themselves and then get the Dynomax mufflers and have them installed. The Dynomax sound deep and have the right tone, not like the other two pairs that just sounded like open pipes. No difference in power between the three pairs either. One other thing, I have a CJ5 so getting the correct fit is more difficult because there is not too much room between the collector and the rear wheel, on a 7 it would be a bit eaiser to get something to fit good I would think.
Baffeled muffler. You are refering to the side pipe mufflers from hedman. If you are, this is the deal. They are about 4" in diameter made out of 1/8" steel, welded real nicely. You could not hurt these things. You could roll over them with a turck and not dent them. You can get your hand in them up to your elbow from the outlet. The baffeled part is like this, inside, up near the collector they weld perpendicular to the length of the pipe steel pieces that take up a little more than half of the 4" pipe, then a little further back they weld another piece but on the other side. I think there are 3 or 4 of them in these side pipes. As for the spark arrest test, do not know. I never saw flames or sparks out of mine at night but you may want to contact hedman on that. Yes they are very loud, with a 401 you will be moving some air and they will be loud.
The part number is 17753. I paid about 45 bucks each for them from summit racing. Summit does not show them in the listing but they show them if you search by part number "WLK-17753". Follow the link below and you can see a picture of them. It is from the dynomax dealers book. It gives dimensions and all other info you will need.
When I went and had the mufflers installed they cut and flipped the mufflers around so they fit better. As well as making the distance from the collector to the muffler shorter. That made more room for the turn out in back by the rear tire. The mufflers are hang at an angle with the bottom close to the skid plate and the top close to the bottom of the tub. They do not hang lower than the skid plate so I did not lose and clearance. I wanted to have them flat but they would not fit with the angle of the headers and the location of the skid plate. They did what they could and it turned out nice. Cost a 100 bucks at the shop, done in an hour. After the 3 years of having it sound like a stock car, this is perfect. I can even hear the radio when I am at highway speeds now. It was so loud before that I thought the radio I had installed sucked and it was really just that the exhaust was too loud!
Anyway if you have any other questions I'll help if I can.
That's exactly the info I am looking for, Thanks Much!
I suspected that the Hedman "mufflers" in the kit were similar to a glasspack, which is not much short of plain annoying! I used to use glasspacks back in my days of immaturity, LOL, I guess kind of comparable to these jerks running around with the 6" exhaust tips on their rice-cars that sound like weedwackers going down the street.
I appreciate your first-hand experience/trials. I had Dynomax Turbos on my last CJ, with a built 258/dual exhaust, and they were recommended by this real good custom exhaust shop near me. I loved the sound, very nice, low rumble, not annoying at all, just good quality sound.
I'm going to look into getting the 17753's like you got, they look perfect, and easy to setup. Thanks!
When I did have the side pipe mufflers and the Purple Hornies on my Jeep it was not a daily or regular driver. I finished up a few other projects on it (heater core, blower motor upgrade, wiring issues - so I could drive it in crappy weather) and have been able to drive it more regular and that is the reason for searching out some solution to the exhaust issue. If it had stayed as a summer fun toy I would have left the Purple Hornies on it.
Like I said before it is perfect now. Just enough rumble at idle and at full throtle in second going for third, sweat. Normal rpm range for highway speeds, almost no noise and with the top off you really cannot hear anything except wind noise and the radio. It was a cheap solution ($200+/-) to my issue. At this point I have had enough of loud and I wanted these installed right so I went to the shop. You could really hang these yourself and save some money.
I'll try and post a picture over the weekend if I get a chance.
what motors are you guys running????? AMC's or chevy. I have a small block chevy in mine and I have seen fender well headers made by headman for this setup. Is there enough room to run cat's on it???????
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I have a 350 chevy and I cannot see any way to run a cat with any muffler I've seen. If I remember corretly there is 28 inches from the collector to the rear tire. That is pretty small for a cat and a muffler. I have seen on a CJ7 a cat bolted directly to the collector and a muffler directly to the cat with a turn out and even that was slim. I do not have emissions testing so a cat is not critical for me.
thanks for the reply. I also have a 350 and right now i have the inside the frame shorty headers. the problem i ran into was when i installed the shackle reverse kit the passenger side header had to be removed because it was soo close to the frame. always something.. 1 step forward 2 stpes backward.... i am going to try to heat the header and bend it in about 1/2".. was also thinking about putting regular length headers inside the frame put then i ave to contend with the oil filter and tranmission brackets on the drivers side..... I do have to worry about emissions that is why I was asking about installing cat's and mufflers. I guess if you have evrything running outside the frame you cannot install nerf bars. correct.
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I don't think you would be able to put the nerf bars on with the setup I have. The mufflers are tucked up near the lower part of the tub pretty much. They are also completely under the tub so you do not burn the back of your leg getting in or out. I suppose if you hung them lower you could get the framework for the nerf bars to the frame rails, but at the cost of ground clearance. I have no need for the nerf bars but to each their own.
I'll be putting a 360 in my 82 CJ-5 this fall and I haven't made up my mind on using headers or stock manifolds. If I use the manifolds what problems will I have? I will be using a T-150 d-20 combo also.