97 4.6 Longtube Headers installed - Page 3 - TCCoA Forums

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post #61 of 82 (permalink) Old 05-31-2015, 11:09 AM
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I'm waiting for the 2v flavor, personally.
I'm waiting for the C head flavor personally

-Matt
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post #62 of 82 (permalink) Old 05-31-2015, 11:25 AM
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I'm waiting for the C head flavor personally
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post #63 of 82 (permalink) Old 05-31-2015, 01:17 PM
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Ha! If I could afford a cnc bender, I'd already have one lol. now you're dreaming. Lets all be happy I'm even doing this There's other ways to achieve consistency. Remember, I am not an exhaust shop. Just a one-man army going against the grain armed with just a couple nifty tools, and a nice collection of jumbo-sized neurons.

I have my eye on a small 16 ton manual tube bender to experiment making my own dual exhaust configurations. Mostly how, and where the tips would exit. They're less than 200 bucks. Anyway, thought some flexible tubing that can be manipulated by hand, yet stay in place, and used as a template, might help avoid error waste. I doubt know. Something like air duct tubing, or something...

Thinking the same technique might be applied to a "quick change" dummy set of headers.

I have no doubt you've already thought of this. Just writing out loud for the greater good of all readers, lol. Mind you, I have no aspirations of building my own headers. My welds usually come out looking like bird poop. Let alone ss tigging under the inerts.

And please forgive my presumptuous ponder, your excellency.

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post #64 of 82 (permalink) Old 05-31-2015, 02:06 PM
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I have my eye on a small 16 ton manual tube bender to experiment making my own dual exhaust configurations. Mostly how, and where the tips would exit. They're less than 200 bucks. Anyway, thought some flexible tubing that can be manipulated by hand, yet stay in place, and used as a template, might help avoid error waste. I doubt know. Something like air duct tubing, or something...

Thinking the same technique might be applied to a "quick change" dummy set of headers.

I have no doubt you've already thought of this. Just writing out loud for the greater good of all readers, lol. Mind you, I have no aspirations of building my own headers. My welds usually come out looking like bird poop. Let alone ss tigging under the inerts.

And please forgive my presumptuous ponder, your excellency.
I have a tubing bender and some dies, but I had decided long ago that the centerline radius of the bends simply would not be suitable for this kind of project. The J-bends I had previously used for my set and the other set I auctioned were of a much tighter bend radius, that you can pretty much only get with a mandrel-based bender, cnc not withstanding. But then the cost of the number of J-bends I would need would quickly escalate both my cost and the "consumer" pricing.

Lobster for dinner anyone?



Not my pic, but that's pretty much what I'll be working with. Three segments-per-45° bend on a 1.5" centerline-radius gives decent results in terms of approximating a mandrel bend, and leaves just enough material to weld them together. I might even sneak a 4th segment-per-45°-bend to get it just a smidge smoother (working on that ATM). While the smoothness of tight bends is limited to the segments because they have to be welded together, larger radius bends allow more flexibility, and all bends have an infinite adjust-ability for centerline-radius.





If you take a ruler to that picture on your monitor, the tubing at the ends should be 1-5/8", so it's not too bad IMO. The yellow arc is true circular. Those small bend-approximations shouldn't be too bad especially considering that the tubing will not be reduced to a compression-style bend that compromises the cross-sectional area from being constant/circular.

Last edited by guitar maestro; 05-31-2015 at 02:22 PM.
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post #65 of 82 (permalink) Old 05-31-2015, 03:00 PM
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As usual General Zod you're light yrs. a head of me. I mean you've got to give credit where credit is due. That lobster tail looks beautiful. And I'm sure your work will be no exception.

CAD design, infinite adjust-ability, reduced compression compromise for consistent concentricity. AND... at lower cost. Ah, the elegance of science.

Thank you for taking the time to reply.

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post #66 of 82 (permalink) Old 07-03-2015, 07:48 PM
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Uhm.........

What's wrong with the KOOKS again ?
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post #67 of 82 (permalink) Old 07-03-2015, 08:07 PM
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What's wrong with the KOOKS again ?
They killed my father once.

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post #68 of 82 (permalink) Old 07-03-2015, 08:16 PM
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What's wrong with the KOOKS again ?
Nothing.
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post #69 of 82 (permalink) Old 07-03-2015, 11:33 PM
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I like the Kooks...........They seem to be very well made.(strong big gauge thickness where they bolt on block) Excellent engineered design.(tuned sound doesn't come from crappy unequal lengthened pipes) no problems with them
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post #70 of 82 (permalink) Old 07-04-2015, 06:29 AM
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What's wrong with the KOOKS again ?
They aren't long-tubes, they are mid-length headers, which will not give you the full performance benefit of long-tube headers.

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post #71 of 82 (permalink) Old 07-04-2015, 06:31 AM
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Which is exactly why I've been waiting rather (im)patiently for MN12 longtubes to go into production again.

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post #72 of 82 (permalink) Old 07-04-2015, 12:31 PM
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Which is exactly why I've been waiting rather (im)patiently for MN12 longtubes to go into production again.
It's only been two years since you missed the auction. And to think, those probably still aren't being used, lol. You could have been sporting them right now
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post #73 of 82 (permalink) Old 04-26-2016, 07:03 PM
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Hello,I would like to contact the cableguy about modifing a long tube header for 4.6 tbird?
I have a set and can ship it to you for modifications. I can pay
Thanks
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post #74 of 82 (permalink) Old 04-26-2016, 07:27 PM
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I have long tubes on my 4.6 cougar.

Made by Sean Hyland motorsports.

Quickest N/A Modular MN12.
11.97@ 109.35
3880 lbs. w/driver.

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post #75 of 82 (permalink) Old 04-26-2016, 07:43 PM
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this thread makes me wonder what happened to the set I auction off, lol.
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post #76 of 82 (permalink) Old 04-26-2016, 08:40 PM
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this thread makes me wonder what happened to the set I auction off, lol.
I've been looking on Craigslist for them for years to no avail

-Matt
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post #77 of 82 (permalink) Old 04-26-2016, 08:45 PM
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I'm still waiting for a killer set of Texas sized pipes.

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post #78 of 82 (permalink) Old 08-12-2016, 03:54 PM
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Anybody make long tube headers for a 95 bird?
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post #79 of 82 (permalink) Old 12-28-2016, 08:00 PM Thread Starter
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I'll put this here to answer the multiple PM's I got about headers. Sorry fellas I am no longer in the modifying headers game, way to many other projects on my plate so I apologize. But looks like GM has something cooking....
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post #80 of 82 (permalink) Old 12-31-2016, 12:17 PM
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It's only been two years since you missed the auction. And to think, those probably still aren't being used, lol. You could have been sporting them right now

GM:
All of this holiday idle time has got me to thinking - how exactly did you mock up your headers for test fitment?
Did you start with an engine model in the header SW or does the header SW just pot angles for you? How did you determine if this would/would NOT interfere with the steering shaft?

Did you do any mock up? I saw some companies offer PVC-pipe based mockup systems which I'm sure can be copied or found elsewhere.
Example:
Custom Headers Built To Your Specifications

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post #81 of 82 (permalink) Old 12-31-2016, 01:20 PM
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Another basic question: for a diy setup, how would you go from a rectangular port on the header flange to a round exhaust tube?

While starting from a stock used set of mustang long tubes and clearencing them as needed would be the most cost effective option for me, the ROI isnt there over my stock setup for my application. If i was to go down the diy header front, it would be to enable something truly stupid like 180 degree headers (which make no sense on my engine build except for the glorious sound since i dont rev beyond 5000-5500 rpm anyway). Also, because ive run out of projects for my tbird and i have no room for a second car build (something CA street legal).
-g
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post #82 of 82 (permalink) Old 12-31-2016, 11:38 PM
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GM:
All of this holiday idle time has got me to thinking - how exactly did you mock up your headers for test fitment?
Did you start with an engine model in the header SW or does the header SW just pot angles for you? How did you determine if this would/would NOT interfere with the steering shaft?

Did you do any mock up? I saw some companies offer PVC-pipe based mockup systems which I'm sure can be copied or found elsewhere.
Example:
Custom Headers Built To Your Specifications
The first time around, on my set, I pain-stakingly removed-and-reinstalled both the cylinder head and the steering column in and out of the car an obscene amount of times to get it right.




The second time around on the set that I auctioned off, I mocked the location of the steering column with a piece of tubing that was pretty much identical to the size of the steering column. That way, I could do everything outside of the car.







The header software I purchased later and used to setup some models for the 4V headers I've been wanting to work on for some people. Sadly, my work has consumed so much of my time to make much progress on that. When I had the 4V header flanges laser cut, I told the vendor to save the oval slugs. I had planned to drill the slugs, about 4 of them, bolt them together, then grind the outside to a roundish profile to use as a punch on the hydraulic press, in order to oval out the round tubing.
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