Interesting

 

http://www.customtacos.com/forum/showthread.php?t=88960

 

not a member over there, yet, so I cant see the pics and hp numbers.

what kind of numbers are they showing without a supercharger? and any way you could post some pice here?

I must say, a 2-3 hour install time is looking good to me.

 

Prototype Pictures:

 

Production Model:

 

Production Model Stainless Steel Ceramic Coated Installed:

 

Dynograph Showing Gains:

 

Group Buy Pricing:

$547 Ceramic/ 20 people

$481 Chrome/ 20 people


$582 Ceramic/ 15 people

$516 Chrome/ 15 people

 

Oh my that's pretty. I dont know if I'll get the wife convinced on this one?

 

very unique bends near the flanges. since there are diff bends for each flange, are these headers flow-tested at the main collector?

if so, do they have the flow rate number and are they the same?

 

Great questions. I'll find out about the flow rate. I asked about the unique bends when the pics of the prototype were posted on CT. Short answer: They took the best of both worlds, JBA and TRD and addressed the installation concerns.

Long answer:

"Yes, you'll also find that JBA did this too, however ours is a little different. The reason for the loop is first, equal length. You just don't want to have a single 2" tube dump where other's are 8-9" in length. Second is that you have to pass it by the steering column which is in the way on the S-Runner's. But you shouldn't have any problem with other applications. We tried doing a wrap around long tube one, but you couldn't fit it in without having to force somethin out of the way. Also, you'll notice how the crossover is one piece and all ball flanges? The collector flanges are also positioned to where you can take a socket and reach through he fender well with an extension without hassle."

"The difference between the "conventional" and JBA, is that the number 1 cylinder floated all the way to the collector, thus having another flange to the collector and and the head. This is good in the sense it is now longer tubes, but prone to leaking. TRD brought the collector all the way to back and cast it as well. Nice concept, but just had too many flanges. The JBA "loop" that I describe, keeps the length of the that tube similar to the others, thus helping the scavenging. This loop also functions for installation ease. In the S-Runner, the hardest one to fit, the steering column is right in the way and you need to get by that in order to install it."

MORE INFORMATION:

"The headers are 1.5" primaries, 2.5" crossover with a one piece crossover"

For comparison purposes: "TRD Headers had 1 3/8" primaries, 2 1/4" crossover. TRD has the number 1 cylinder floating and not even on the same flange. And JBA requires extensive cutting and multiple flanges and pieces. Whereas ours only has 1 left, 1 right and a crossover.

Will these come with the same spring loaded flanges as the TRD headers? They will be ball flanges."

 

Ok... got a response on that.

TRD and JBA don't readily offer flow rate data either, (Exhaust gas flow? Water flow? Cold air flow? It is a non-specific term), and there is a good reason for that. It's useless. The primaries are designed according to the firing order with length taken into consideration. Thorley tests their prototypes on the dyno. That is the main indicator of functionality.

I'll forward any other questions you folks may have.

 

What is the cutoff date for the group buy?

Thanks

 

No date was mentioned as these just reached production right off the drawing board, (pictured).

This is a preliminary offer for those interested. Retail will be $777 chrome, and $913 ceramic.

 

There are 11 people already signed up on the www.customtacos.com Thorley 3.4L Headers Group Buy.

We only need four more for the 15 people discount.


Once again, retail will be $777 chrome, and $913 ceramic.

Group Buy Pricing:

$547 Ceramic/ 20 people

$481 Chrome/ 20 people


$582 Ceramic/ 15 people

$516 Chrome/ 15 people

 

I'm in for a set...

 

dang thsi sucks, if this was for a 3.0 i would definately be in.

 

It would be great if this was for the 3.0. However, I would want a header that was made like this one. Thorley was too lazy to give us 3.0 owners ball and socket joints. And, imagine how great it would have been if the 3.0 headers had the crossover in the same spot like the 3.4 headers have. It would make it so much easier to connect to the existing exhaust system.

Thorley did a great job with the 3.4 headers. These are truly a work of art.

 

Wow Im really surprised there is not more of an interest for these things. No one else???

 

Whenever there's a deal on headers, most people want to wait to see whether or not the headers are reliable in terms of leaks, AND whether the gains are worth the labor intensive installation and cost. The gains have been demonstrated on a dyno. The installation concerns were addressed. The price on this group buy is a steal...

So... The only issue that has yet to be addressed is whether or not these leak. The types and number of flanges, (mentioned earlier), are superior and fewer than the ones used on the TRD headers. Theoretically, they should prove to be more reliable.

My question to Chris regarding this:

"Have you experienced any leaking issues with your prototype? Any problems whatsoever?"

Response:

"None, these are the final ones, these would be considered production."

Those of you waiting around... The representative from Thorley is willing to answer and address ALL questions/comments regarding their products. If any of you have reservations about this product, I would highly recommend you bring them up with Chris directly over at CT.