fixing a bent header?

25 replies to this topic
  • Guest_Guest_*

Posted May 18, 2001 - 05:44 PM


I used o2/acetaline
and it does get verrrrry hot
just b carefull with the pressure.
we tried propane and it just did not get hot enuf.
I have a Noleen header and my freind that this jig belongs to has the T-4 setup front to rear.
Yes I think that they are thicker by quite a bit.
Maybe just needs to be hotter with less air psi.
We used between 75psi and 80psi

[This message has been edited by g4racing (edited 05-18-2001).]

  • motoman393

Posted May 18, 2001 - 06:12 PM


Well that makes sense, thats what I was thinking was it wasnt hot enough! Since Acetiline is much more expensive we will be going to a welding shop with our jig tomorrow to get it straightened out. Thanks for your help!


I get my kicks on a 2001' YZ426!
Friendswood, TX

  • motoman393

Posted May 19, 2001 - 06:17 PM


Well my header turned out is no longer a HUGE crease but now a little line. Another 10 more mins and I could have gotten it perfect, but I didnt want to use all of my friends oxyacetiline (even though it was a very large tank)! I used about 60-70 PSI of pressure in my header and it worked great, it took a total of 20 mins! Man that stuff burns hot, I was wearing welding gloves and it still was like an oven ,it also was in a hot barn (gotta love the TX weather right? LOL)

I think as long as you keep the bead of the flame (the neon blue tip) about 4 inches away from the header at all times and move it around will not blow a hole in your header! Well I appreciate all your tips and suggestions! Thanks,


I get my kicks on a 2001' YZ426!
Friendswood, TX

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  • motoman393

Posted June 20, 2001 - 10:07 AM


Just to let you guys know I put up a procedure and pics on how to fix your header on my website! Click HERE to goto the "how to fix your header page" just letting you guys know, there is a lot of new guys on this BBoard and they may have this problem too! Later,


I get my kicks on a 426!
Motoman393's MX Site

  • ExhaustWorks

Posted June 20, 2001 - 07:39 PM


Hey! Here's your LOW COST ALTERNATIVE!$26.00 per pipe for 1985 and newer exhaust's.

.............................................<IMG SRC ="">

[This message has been edited by ExhaustWorks (edited 06-20-2001).]

  • bjscheel

Posted June 28, 2001 - 08:44 PM


i have a 98 400f with a fmf header and pipe. I had exhaust works fix my smashed header it took only a day and you can't even tell it was ever bent or smashed. The best part was there was no discoloration.
I highly suggest trying him.

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