02TransAm/Batmobile

iTrader: (32)

Do you have pics of the primaries you use? What is the wall thickness?

WRSpence

iTrader: (1)

So the race ones will be closer to a 1 3/4 dia. than the ones that you sell now and they will have thicker walls? Are AIR and EGR tubes cut off? Where will the O2 bungs be? Current spot or on the insides of the collectors? What would be so hard about just switching the collectors from one side to another when they are made?

Speed Engineering

iTrader: (35)

New Versions:

-Actual 1 3/4"
-Wall Thickness 16-18 Gauge (Cost will be a deciding factor etc)
-No Air/EGR
-O2 Bungs on the inside

Thanks
Sean

demonspeed

iTrader: (7)

This certainly sounds promising. Personally, I'd probably stick with the thinner gauge to keep things cost-conscious. I determined the other eBay brands are 15g, so even at 16g you'll be able to say you've got better material along with a true 1-3/4" primary. Let TSP tackle the more expensive 18g stuff. If you could price this right I think you'll have a really hot product that easily compels people who are shopping the $180 eBay headers to step up and go for yours (myself included, obviously).

edit: we're quoting steel thickness incorrectly: http://www.engineersedge.com/gauge.htm

WRSpence

iTrader: (1)

Yeah I agree with DemonSpeed. And Sean, mark me up to be the first to buy the new headers.

Speed Engineering

iTrader: (35)

Sounds good. Ya, were hoping to mix a little more quality, and hopefully we can keep the cost down still. If it all pans out the way we hope, we should have a pretty good combo.

Thanks
Sean

demonspeed

iTrader: (7)

Keep in mind you'd also be the only budget option for race-style long tubes. The only way to get "affordable" stainless without AIR/EGR is to go with the TSP 1-3/4" which are $409. Keeping in mind theirs are 18g and have the velocity spike; 1-7/8" are $529.

Otherwise, one has to go with mild steel Pacesetter or Hooker/Flowtech.

You've now also got a good advertising bit in that yours would be a true 1-3/4" primary compared to your other eBay competitors at 1-5/8".

Speed Engineering

iTrader: (35)

Very true, now we just need to get them in already.

Sean

user 8373738

iTrader: (6)

Just curious what gauge steel Kooks and AR use? Also would the wall thickness affect the amount of cabin noise? How Do these compare in fitment? I'm running 1 3/4" Kooks race headers and can hear a little combustion noise but its not as noticable as the valvetrain noise.

demonspeed

iTrader: (7)

I'd be willing to bet Kooks are 18g, Dan. However, I have no evidence of this. I'm sure a rep from Kooks would be able to answer that, though.

edit: I was a bit off on the thickness: http://www.engineersedge.com/gauge.htm

user 8373738

iTrader: (6)

I just saw your other thread so I now understand your interest in this subject. Good Work and Good Info!

Makes me wonder if the TSP 1 7/8" are actually 1 7/8". Especially with the power gains achieved on stock cubed cars.

AnotherWs6

iTrader: (17)

You keep the price reasonable and you can sign me up too... Love the fact that they will be race versions, no ugly cut and welds needed to be done on shiny new headers.

Speed Engineering

iTrader: (35)

Not sure what gauge Kooks or AR uses, but yes the thicker the tube the less valve slap you will hear. As why manifolds have very minimal noise.

Thanks
Sean

Dmjr228

iTrader: (2)

Just to clear things up and prevent any confusion, because this wall thickness talk seems to be a little twisted, the higher the gauge the thinner the wall thickness.
Example: 20 ga is approx .035" where 16 ga is approx .065".
Therefore, the lower the gauge the thicker the wall thickness.

demonspeed

iTrader: (7)

Thanks for clearing that up. I'm a bit confused, though: what are the name-brands using, then? I did another search on the metal gauges (http://www.engineersedge.com/gauge.htm) and it appears as though the eBay headers would then be 15g -- but that's supposedly thicker than what the name-brands are advertising (usually 16g or 18g). Ugh...

bryan00ssm6

iTrader: (1)

Any more news on the race version like when its gonna for sale

Speed Engineering

iTrader: (35)

We have received confirmation that they have received our headers, and are building a test fit sample as we speak. Should be another 3-4 weeks before we have them in hand. If everything is ok, then were about 4 weeks out from that point.

Thanks
Sean

bryan00ssm6

iTrader: (1)

So we are looking at about a total 8 weeks right?

Speed Engineering

iTrader: (35)

If no changes will be needed on the header design we get back, that should be about right. At least that's what there telling us.

Sean

blown97ss

iTrader: (8)

would a hooker y pipe fit if so ill give these a try, since i have the y pipe.