Fitting TTi headers on a 273

Mopar Exhaust Systems

  1. 67 Barracuda uk

    67 Barracuda uk Member

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    I’ve got milling machines - so we will be able to mill them flat if necessary.
    Good idea about the support from middle to end. Removing it will help pull the header down.
     
  2. 67 Barracuda uk

    67 Barracuda uk Member

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    BCF85E78-E94C-4EAB-A4DE-94C91633666C.jpeg

    C7C3B10D-40E4-465F-83D2-C9F5E0C867CF.jpeg
     
  3. pishta

    pishta I know I'm right....

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    Mattax, tolerances stack up, could just be a slight shift on the mounts to give the required clearance. Also doesnt even need to be 1/8, I bet 16g would work too, just enough to give it a backing. 16g over a 2-3mm gap will provide plenty of support for a flange. UK's headers collectors are way up there, I think he has much more clearance/leaway than we usually see with full or 3/4 length headers. maybe just a kiss on the outside of the flange with a grinder. plenty of meat there.
     
    Last edited: Feb 3, 2019
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    • Mattax

      Mattax Just the facts, ma'am FABO Gold Member

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      That sounds good. The trick will be fixturing it. Others do it. They may use a jig on a belt sander. Headers by Ed used to do it. Calvin Elston and all of the custom builders do too. This evening I can search on Speedtalk forum - I know it came up in discussions.

      I kindof hesitated to post these here, but this what I found.
      I did the best I could using a glass plate and sand cloth, but the overall arch was more than I could address. I wasn't terribly concerned using the fat gaskets and such a thick flange.
      upload_2019-2-3_13-29-26.png

      upload_2019-2-3_13-26-45.png

      upload_2019-2-3_13-26-12.png

      upload_2019-2-3_13-27-35.png
       
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      • Mattax

        Mattax Just the facts, ma'am FABO Gold Member

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        • crackedback

          crackedback FABO Gold Member FABO Gold Member

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          What about slotting the bolt holes to the low side and pulling the header UP slightly when installing. That distance to cover for a decent sealing edge may be a reach on this one. Is that a possibility instead of welding on them or making a plate.

          Jig that in a mill and be done in quick fashion. Or hillbilly it with a dremel or drill...

          There have been issues before with tti and ported heads as well where the sealing surfaces are not close to each other. Only option was to tig them up and mill the surface.
           
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          • inertia

            inertia Well-Known Member

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            I've been using a big flat file, since the 60's. (and sometimes a welder and/or grinder/belt sander)) to true and change the angle the headers leave the engine, by filing the flanges.
            It.s no big deal, it's a last resort for gaining clearances, but used to be absolutely nec. to get the old headers to seal.

            It takes very little material off a flange to get 3/16 on a lower tube, or the collector.
             
            Last edited: Feb 3, 2019
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            • Garrett Ellison

              Garrett Ellison Amateur driver on public roadway, do not imitate..

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              It’s amazing what you can do with a good 2 foot X 1-1/2 inch flat file and a good rythym. I’ve been told several times I looked like I was working on weapons in the Shaolin Temple...
               
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              • 67 Barracuda uk

                67 Barracuda uk Member

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                Thanks for putting the pictures on.
                I’ve got the idea now.
                They need to be perfectly flat to seal.
                I’ll have a go at them tomorrow.
                Thanks for your help
                 
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                • 67 Barracuda uk

                  67 Barracuda uk Member

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                  I think they have it right now.
                  Hopefully
                  I’ll see once I put them back on.
                   
                • 67 Barracuda uk

                  67 Barracuda uk Member

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                  Hi there.
                  Good idea - I will have a look tomorrow- maybe possible.
                  I have a milling machine that I could slot the holes longer.
                  Thanks for your message.
                   
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                  • 67 Barracuda uk

                    67 Barracuda uk Member

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                    Thanks for your message.
                    This is my first Mopar so I’m learning all the time.
                    It looks like people have had this problem before.
                    It’s a good job I can come on here and ask questions.
                    I’ll have a go tomorrow- welding filing -milling etc.
                    Cheers
                     
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                    • inertia

                      inertia Well-Known Member

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                      I edited post #32 .
                       
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                      • 67 Barracuda uk

                        67 Barracuda uk Member

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                        86E09AA5-D6E8-4804-9090-C19E23A1C4ED.jpeg 1FA3210F-A46D-45FF-BB7A-BE0320DC0113.jpeg Hello
                        Just a quick update.
                        I’ve welded my ports up on my new headers.
                        They are now machined on the face - so they are flat.
                        I’ve bolted each header to a piece of steel flat and tried a 0.002” feeler gauge under.
                        I couldn’t get the gauge under so they should all be good now.
                        Thank you all for your help
                        Mark
                         
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                        • Garrett Ellison

                          Garrett Ellison Amateur driver on public roadway, do not imitate..

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                          Excellent job, I would be proud to show that!
                           
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                          • inertia

                            inertia Well-Known Member

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                            Great job.
                             
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                            • toolmanmike

                              toolmanmike FABO Staff Staff Member FABO Gold Member

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                              Nope, your car is fine Mat. Those shorty headers have never fit. Especially early A's. They were originally designed for trucks weren't they?
                               
                            • Mattax

                              Mattax Just the facts, ma'am FABO Gold Member

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                              It's been a while but I think TTI always intended these for cars. They do not fit '66 and earlier. TTI had made them to fit them in a late 60s or early 70s A-body so I wasn't expecting complications. After tying Rob's lift for 3 days I made the decision to cut both our losses. There were at least 3 more modifications it looked to be needed to make them work. My car may just be on the tight side of certain production tolerances. The 340 headpipes made by Accurate hung low, and the distance from distributor cap to wiper motor is pretty tight. Not complaining - its good to have the engine as far back and low as possible.

                              I had them up for sale a couple of times and should follow up with the guy who bought them as far as fit and performance since they were going into an A-body. I had them coated with zirconium dioxide so curious about that as well. People have been able to fit the TTI shorties into A-bodies, I just couldn't do it on my car without a bunch of mods. Maybe certain combinations don't work out as well. Maybe changes have been made since then - the headpipes certainly have been. huh-gif.gif
                               
                              Last edited: Feb 11, 2019
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                              • Darter6

                                Darter6 Well-Known Member

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                                Just a few photos. TTI shorty's on a 68 Valiant 273. Driver side a bit tight but clears everything.Column shift requires their kit(photo)but the stock stuff can be reworked if you good at that stuff.

                                IMG_2618.jpg

                                IMG_2644.jpg

                                IMG_2617.jpg

                                IMG_2625.jpg
                                 
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                                • 67 Barracuda uk

                                  67 Barracuda uk Member

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