Ted, thank you for posting these results.



Could I make a suggestion? Would it be possible to stretch the image of the graphs in the horizontal axis? That would make it easier to spot the differences in the curves.



Thanks.

Best regards,



Paul Menten

Meridian, Idaho

The horizontal axis is as large as the site will permit in being ‘500’ wide.  Although the graphs view fine on my end, I can only imagine the number of different monitor and viewing properties/attributes used by other YBF forum viewers.  Some better, some worse I’m sure.  I did have the option of using Photobucket or another hosting site which would permit a larger horizontal viewing but I’d rather these graphs were permanent to the site and also sized where the text is not rolling off of the right side of the screen.  Using an external host site leaves the potential for the graphs to eventually disappear from the site if the files at the host site are removed or renamed.

 

From a site loading standpoint, I do still have room to stretch the vertical axis on the graphs.  This would essentially make the graphs square; the Y axis (vertical) would then be the same size as the current X axis (horizontal).  If stretching the vertical axis would help the viewing, then I can do that on future graphs.  Just let me know.

Lorena, Texas (South of Waco)

Gut feel says the Sandersons are going to outperform the Rams Horns except maybe in the very low rpm ranges.  That same gut feel says the Rams Horns are going to be better than the ’57 & up cast iron manifolds but that will be verified in the ‘big’ exhaust test that’s coming up.  The Sandersons thus far with their smaller tubes do work well on the engine combinations thus tested.  But here’s a link to a 272 that was tested with the EMC headers and Rams Horns as that's the only Rams Horn test I have on file.

Exhaust Testing – 272 Y-Block

The torque differences in that test did not show a significant shift or advantage in a specific rpm range but the headers still outperform the Rams Horns generally in the whole of the rpm band in which both were tested.  I’ll add that if the heads are stock, then dual exhaust is likely going to be the best bang for the buck while manifold or header changes are not going to see the big differences that will be seen if the heads are ported or a much larger camshaft is being used.  As the breathing capabilities of the engine are improved or increased, then the need for a much better breathing exhaust system will come to the forefront.

Lorena, Texas (South of Waco)

I’ll take you up on the offer on the header loan.  The more the better at this point.  Go to this website for contact info and/or a shipping address.   http://www.eatonbalancing.com/   

 

Here’s a list of exhaust tests that are in the planning stages thus far.

Early single exhaust manfolds with crossover pipe and a length of 2” exhaust pipe.

’57 exhaust manifolds with dual exhaust pipes.

Fenton exhaust manifolds with dual exhaust pipes.

Rams Horn manifold with dual exhaust pipes.

EMC headers w & w/o muffers and variety of exhaust extensions.

Burnette T-Bird headers (shorty design and Tri-Y).  Not firing order specific.

Pickup Tri-Y headers with a Y specific firing order into the tubes.

1 5/8” tube fenderwell headers.

1 ¾” tube fenderwell headers.

1 ½” tube Sanderson pickup headers.

1 ½” tube shorty heades with square collectors.

Reds two tube car chassis headers.

Christenson 4 tube chassis headers. (shorty design)

Lorena, Texas (South of Waco)

Ted, if I can find a box, I will send you my cobbled together junk. I had planned on just bringing them when the engine is ready, but I would be interested in seeing how they compare to the others that you have on hand. I'll give you a call if and when I ship them.

Glen Henderson



Freedom is not Free

Letohatchee, AL

HI Ted, I'm running and have in use the Ford Power train Tbird headers that come out of Washington. (you know the ones Mummert has on his site) Any chance you might be able to test them. I might be able to loan mine if necessary.

       A  L  A  N   F  R  A  K  E  S   ~  Tulsa, OK    

Ted,



Good deal. I will get them out to you this week. I don't think the Tbird Sandersons will perform as well as the Sanderson truck shorties but hopeful they will do reasonably well.

57 Black Tbird 312/auto

Ted for what it's worth.......thanks for your time effort and expense!

Frank/Rebop

Bristol, In ( by Elkhart) 

Yes!  Thank you Ted!  You give us so much info that we could not get on our own without great cost.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Glen.  It’s your call on sending the headers or not.  They can be tested on your engine against another ‘known’ set and comparisons made that way.  But if you send them, I’ll test them on the dyno mule with the other headers.

 

Al.  Same deal.  If you send them I’ll include them in the test.  Your call though as there are plenty of headers here now to test.

 

Mark.  Be sure to include a return shipping address and phone number in the box with the headers.  Would like to get them back to you as soon after testing as possible.

Lorena, Texas (South of Waco)