Can you bend ot headers
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Can you bend ot headers

  1. #1
    SOUTHERN HOATBOATER 78SPRINT's Avatar
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    Default Can you bend ot headers

    10 years ago we swapped out the 455 olds for a 440 Chrysler. We bought the mounts and log exhaust from cp performance. Wanting more performance we starting looking for a set of ot headers. Finally a set came up for sale on ebay but they were for a v-drive. Being that bb chrysler jet stuff is hard to come by I bought them and they worked great except they burned 2 spots on the top of the transom cause they were angled down. My question is can they be safely bent up a little bit to keep this from getting any worse? Has anyone done this with any success? We were thinking of using an engine hoist and a strap while we heated the bends. I tried posting a pic but I dont have my computer with me right now. Thanks in advance.

    Steve

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    SOUTHERN HOATBOATER 78SPRINT's Avatar
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    Its not the boat in my avatar. Its my brothers boat

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    Senior Member ICECREAMAN's Avatar
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    It's probably not recommended to re-bend headers, but they can be tweaked a little. One way is to run the motor at a fairly high rpm until the headers start to glow then stuff a 2x4 in the pipe and give it a good lift. I did this to even out a set of headers awhile back that weren't level to each other when you looked at them from behind.

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    Bending headers is easy ....... Red hot the bottom of the headers by the small drain hole and then stick a bat in the end of the pipe and bend accordingly. Just a heads up. If the pipes are super nice they will probably not be so nice where you put thetorch to them

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    Senior Member Chop Shop's Avatar
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    Years ago when I worked at a muffler shop we would have to "custom fit" lots of headers. They never seem to fit as good as the application guide says.

    We would stuff a stick of muffler tubing inside the collector (whatever size fit best) and just give it some pressure till they exited away form rattles or heat sensitive items.

    Some we used heat on if they had to be bent ALLOT or if they looked cheap/flimsy.

    Another option is to cut the collectors off and order a set of proper sized replacement collectors and weld them on at the angle you like.


    Is it the exhaust itself blowing on it causing the burn? OR Is it the heat off the headers being too close that is burning them?

    My headers are only 2 inches above the transom on my boat and I run them DRY. But they are SS and jet hot coated. Ive seen dry headers with more clearance than mine burn gel without the Jethot/cermichrome style coating.

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    SOUTHERN HOATBOATER 78SPRINT's Avatar
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    The headers are ceramic coated, but by who is unknown cause they were coated when purchased. The burns are from the exhaust blowing on the transom, so i would like to bend them up level for looks if i can. At least enough to not burn the hull any worse than it already has. Just guessing i figure 5 to 6 inches or so would get them level.

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    Senior Member Chop Shop's Avatar
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    What about adding tailpipes like this?

    Might not be the look he is after tho, but would be easy to do.


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    Quote Originally Posted by 78SPRINT View Post
    The headers are ceramic coated, but by who is unknown cause they were coated when purchased. The burns are from the exhaust blowing on the transom, so i would like to bend them up level for looks if i can. At least enough to not burn the hull any worse than it already has. Just guessing i figure 5 to 6 inches or so would get them level.
    With the ceramic coating, will be tough to put a flame on the pipe without messing it up and using a 2x4 or bat to bend it up. Probably run dry like Ice said and try to bend up. Another way to do by welding is to cut out a slight wedge on the top of each tube with a sawsall, cut half way down, bend up, and re-weld. This will mess up the ceramic coating though. Have done this on the individule tubes where the header mounts to raise away from each side of boat. Worked good but no ceramic coating to deal with.

    Probably be better to cut off the tube at the collector and re-weld.
    Last edited by Ol Blue; 07-30-2012 at 02:02 PM.

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    Quote Originally Posted by 78SPRINT View Post
    The headers are ceramic coated, but by who is unknown cause they were coated when purchased. The burns are from the exhaust blowing on the transom, so i would like to bend them up level for looks if i can. At least enough to not burn the hull any worse than it already has. Just guessing i figure 5 to 6 inches or so would get them level.
    I just did this with a set of 440 headers. I bought them used off this board. When they arrived I found they were run HOT and pulled in towards the engine and to top if off they were not even. So my friend and I used an 8' long 2x4 and pulled the right side up even to the left side. I only had to go a couple of inches. If you need to go 5 to 6 inches you will need heat or leverage or both. For leverage bolt two 2x4's together and sand the corners down until they fit into the collector. you want a tight fit so you don't deform the collector. Use heat only as a last resort. The tubes will deform where you heat them.

    ......................Joey

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    SOUTHERN HOATBOATER 78SPRINT's Avatar
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    Thanks for all the replys and ideas. We are going to try this weekend useing icecream mans idea of running it and then mopars idea with the rounded off 2x4's. Going to cut a couple of pieces for height stops for them to rest on until they cool off. I will take pics of before and after so wish us luck. Thanks again

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    Senior Member almost busted's Avatar
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    I love this site I was scrachin my head trying to think of a way to fix my uneven headers it bugs me that they are off when you look at it from the back. I wasnt sure if I should start strong arming them afraid of damage to something or that it would work at all. Im only off by an inch. so it should work THANKS GUYS!!!!!

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    Senior Member Chop Shop's Avatar
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    Quote Originally Posted by almost busted View Post
    I love this site I was scrachin my head trying to think of a way to fix my uneven headers it bugs me that they are off when you look at it from the back. I wasnt sure if I should start strong arming them afraid of damage to something or that it would work at all. Im only off by an inch. so it should work THANKS GUYS!!!!!

    See if your intake/carb mount is crooked too. Crooked headers can be a sign of a crooked mounted engine. If the carb surface is flat/level, then start bendin!

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    Good point chop shop!! I never noticed the motor being off my but I will look before I get to bending. THANKS!!!!!!

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    Senior Member Marcsrollin's Avatar
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    Contact cj222 on the boards he makes custom headers for cheaper than you can buy a new set of bassett's!
    No matter how good she looks , someone is tired of her shit!

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