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Heads up defective Cyclone headers #1651111 07/25/14 11:24 PM 07/25/14 11:24 PM
Joined: Dec 2003 Posts: 22,695 Bitopia J jcc OP If you can't dazzle em with diamonds..
jcc OP If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,695 Bitopia	I had another recent thread regarding a SB dyno test. Seems like a cheap set of headers would do the job. I have a brand new set of cheap Cyclones bought years ago that I bolted up today. I was surprised to find on the pass side the this 3"? crack, looks like it might have been the ERW seam. Might be best to check this area before any warranty expires. I Iig welded the crack, not sure if any internal obstructions developed, but its not a big concern. 8219857-CycloneheadersIMG_5190.jpg (92 downloads) Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Heads up defective Cyclone headers [Re: jcc] #1651112 07/26/14 12:56 PM 07/26/14 12:56 PM
Joined: Jan 2003 Posts: 1,798 McGregor,Iowa 52157 5 500ciDuster top fuel
500ciDuster top fuel 5 Joined: Jan 2003 Posts: 1,798 McGregor,Iowa 52157	I got some back in the early 80's that collided on the block and oil pan bad enough to keep the flange from sealing on the exhaust ports so I called the company which said they didn't know of any problems but 3 sets later they claimed the jig had been changed and I ended up having a nice fitting set. Then a few year later I bought a set that had never been used for $25 at a swap and the holes drilled about 3/8" low on the port flange so they got welded closed and redrilled. Mitch

Re: Heads up defective Cyclone headers [Re: jcc] #1651113 07/26/14 01:09 PM 07/26/14 01:09 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I've seen splits like that on lots of tubing.. its usually how hot the seam welder is set it that causes it to split but it normally will only happen after the tubing has been bent

Re: Heads up defective Cyclone headers [Re: MR_P_BODY] #1651114 07/26/14 02:02 PM 07/26/14 02:02 PM
Joined: Dec 2003 Posts: 22,695 Bitopia J jcc OP If you can't dazzle em with diamonds..
jcc OP If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,695 Bitopia	Makes sense to me, first split I have ever seen, but then I lead a sheltered life. Also gives me a greater appreciation of why roll bars are not allowed to be made of the stuff. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Heads up defective Cyclone headers [Re: jcc] #1651115 07/26/14 02:34 PM 07/26/14 02:34 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: Makes sense to me, first split I have ever seen, but then I lead a sheltered life. Also gives me a greater appreciation of why roll bars are not allowed to be made of the stuff. roll bars are made out of erw tubing all the time and they will pass cert. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: Heads up defective Cyclone headers [Re: dusturbd340W5] #1651116 07/26/14 02:41 PM 07/26/14 02:41 PM
Joined: Dec 2003 Posts: 22,695 Bitopia J jcc OP If you can't dazzle em with diamonds..
jcc OP If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,695 Bitopia	I thought DOM ( a much higher grade processed erw?) was the standard, seems risky, especially if as Mr P says he seen split tubing often. Its basically tail pipe material? Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Heads up defective Cyclone headers [Re: jcc] #1651117 07/26/14 03:42 PM 07/26/14 03:42 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	Quote: I thought DOM ( a much higher grade processed erw?) was the standard, seems risky, especially if as Mr P says he seen split tubing often. Its basically tail pipe material? a lot of the chassis shops that sell kits are a thick wall erw unless you upgrade to dom. I got the standard kit from Chassis Engineering and it was erw and my car was certed to run 8.50. and there is a LOT of rides out there running the same stuff. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: Heads up defective Cyclone headers [Re: dusturbd340W5] #1651118 07/26/14 03:52 PM 07/26/14 03:52 PM
Joined: Jan 2003 Posts: 4,616 Kissimmee Fl. D dusturbd340W5 master
dusturbd340W5 master D Joined: Jan 2003 Posts: 4,616 Kissimmee Fl.	if you look here http://www.appliedracing.com/tubing-and-plate/tubing-dom---mild-steel---4130/ you will see they have CM/DOM/and mild steel and if you look at there cage kits there standard options are CM or mild steel which is ERW. 70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4

Re: Heads up defective Cyclone headers [Re: dusturbd340W5] #1651119 07/26/14 04:15 PM 07/26/14 04:15 PM
Joined: Apr 2007 Posts: 951 Temperance, MI P prochargedhemi super stock
prochargedhemi super stock P Joined: Apr 2007 Posts: 951 Temperance, MI	most places that use welded seam tube will bend it with the seam to the inside of the bend. The lack of stretching the seam helps it not tear

Re: Heads up defective Cyclone headers [Re: prochargedhemi] #1651120 07/26/14 05:51 PM 07/26/14 05:51 PM
Joined: Feb 2007 Posts: 2,578 sweden 1 1Fast340 master
1Fast340 master 1 Joined: Feb 2007 Posts: 2,578 sweden	Quote: most places that use welded seam tube will bend it with the seam to the inside of the bend. The lack of stretching the seam helps it not tear thats one of those situations where you cant win,if the weld is harder than it should the pipe will have weird wrinkles or wont compress as it should and will therefore stretch the outside radius to much and split from that instead. strange things happen..

Re: Heads up defective Cyclone headers [Re: 1Fast340] #1651121 07/26/14 05:57 PM 07/26/14 05:57 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: most places that use welded seam tube will bend it with the seam to the inside of the bend. The lack of stretching the seam helps it not tear thats one of those situations where you cant win,if the weld is harder than it should the pipe will have weird wrinkles or wont compress as it should and will therefore stretch the outside radius to much and split from that instead. strange things happen.. Correct.. if the weld is right you can put that seam anywhere and it'll bend perfectly

Re: Heads up defective Cyclone headers [Re: MR_P_BODY] #1651122 07/26/14 07:21 PM 07/26/14 07:21 PM
Joined: Feb 2007 Posts: 2,578 sweden 1 1Fast340 master
1Fast340 master 1 Joined: Feb 2007 Posts: 2,578 sweden	Quote: Quote: Quote: most places that use welded seam tube will bend it with the seam to the inside of the bend. The lack of stretching the seam helps it not tear thats one of those situations where you cant win,if the weld is harder than it should the pipe will have weird wrinkles or wont compress as it should and will therefore stretch the outside radius to much and split from that instead. strange things happen.. Correct.. if the weld is right you can put that seam anywhere and it'll bend perfectly absolutely correct,just a shame its so darn difficult and expensive finding tubing with good welds these days. 10 years ago any tubing would be good for most anything you could imagine doing to it and then some,these days there is all sorts of isues even doing the simplest of things. almost glad im not working with that anymore

Re: Heads up defective Cyclone headers [Re: 1Fast340] #1651123 07/26/14 07:34 PM 07/26/14 07:34 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Quote: Quote: most places that use welded seam tube will bend it with the seam to the inside of the bend. The lack of stretching the seam helps it not tear thats one of those situations where you cant win,if the weld is harder than it should the pipe will have weird wrinkles or wont compress as it should and will therefore stretch the outside radius to much and split from that instead. strange things happen.. Correct.. if the weld is right you can put that seam anywhere and it'll bend perfectly absolutely correct,just a shame its so darn difficult and expensive finding tubing with good welds these days. 10 years ago any tubing would be good for most anything you could imagine doing to it and then some,these days there is all sorts of isues even doing the simplest of things. almost glad im not working with that anymore I was doing the buying for all the material needed for the exhaust lab at Chrysler and I bought all of my tubing from a couple of places(both were US made tubing) and I bought about 3000' per year.. only once did I have a issue with bending it and it split at the seam.. plus old tubing gets brittle from just sitting around... almost all of what I bought was 416 stainless tubing unless we had a special build for someone that called for another material.. the 416 is a stainless but is magnetic but has real good bending properties

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