Custom Header Thread

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Custom Header Thread

Post  whatbumper on February 8th 2015, 5:13 pm

Post up some work.  Trying to brag a little but it helps to see whats out there for ideas.

X275 car.  I know it's a bbc but the idea is the same.  Hard to package 2.5" nitrous headers in a stock framed chassis.






Last edited by whatbumper on February 8th 2015, 6:26 pm; edited 1 time in total

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Re: Custom Header Thread

Post  69F100 on February 8th 2015, 5:52 pm

Here is the ones I built for mine 2 1/4'' tubes after I put the strut frontend under it would have been a lot harder with the stock front







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Re: Custom Header Thread

Post  whatbumper on February 8th 2015, 7:21 pm

looks good.  It is easier when you have room.

Here's another.




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Re: Custom Header Thread

Post  69F100 on February 8th 2015, 8:43 pm

Here a couple more of the header I built with the stock front that exited under the truck when I 1st built it




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Re: Custom Header Thread

Post  windsor on February 8th 2015, 9:27 pm

I think I'm gonna like this thread. Keep em coming folks.
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Re: Custom Header Thread

Post  cool40 on February 8th 2015, 11:45 pm

706 BBC in a fox body...    
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Re: Custom Header Thread

Post  whatbumper on February 9th 2015, 10:50 am

X275 Nova 2.5" primaries. These were mild steel as customer was getting them jet-hot coated. Notice how easy plug maintenance is.



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Re: Custom Header Thread

Post  rmcomprandy on February 9th 2015, 11:02 am

A lot of people in that situation go to a Tri-Y design simply because they take-up a lot less space when going big.

I have no idea whether or not they work better or worse or the same in those nitrous situations.

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Re: Custom Header Thread

Post  whatbumper on February 9th 2015, 11:20 am

rmcomprandy wrote:A lot of people in that situation go to a Tri-Y design simply because they take-up a lot less space when going big.

I have no idea whether or not they work better or worse or the same in those nitrous situations.

I have seen that. We have actually not done any dyno testing to compare but that would help with packaging if the power was close.

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Re: Custom Header Thread

Post  John Myrick on February 9th 2015, 11:33 am

What's a ballpark price for a set of custom mild steel headers ?
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Re: Custom Header Thread

Post  GTmustang on February 9th 2015, 11:55 am

These are my custom 2- 2.125" step BBF Fox body headers that were built by Tom Stiel of Waterford MI for my 1992 GT w/ a 1.5" engine drop and 1.5" setback. Tube size and primary length were spec'd by the engine builder, Rand Malik (rmcomprandy) of Roseville MI.
[img][/img]
[img][/img]
The headers were ceramic coated by QC Coatings of Roseville MI for a little underhood heat reduction and a lot of Bling!
[img][/img]

The individual header tubes and bolt on collectors make installation a little easier, but it is a real puzzle anyway with the tubes snaking through a fairly tight space!
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Re: Custom Header Thread

Post  yellowhorse7 on February 9th 2015, 12:12 pm

Let's take it 1 step further and talk about designing a MAX EFFORT header. N20, N/A, Turbo, whatever.

Merge Collectors, Stepped or no, tube size, equal length or no??????


So many opinions out there on this subject.....what's yours? study
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Re: Custom Header Thread

Post  whatbumper on February 9th 2015, 12:59 pm

John Myrick wrote:What's a ballpark price for a set of custom mild steel headers ?

There are some people that knock them out for about $1000 but we charge more.  Most of our big tube nitrous style stuff is in the $2000 range including mufflers built on the car including moving items and clearance stuff as needed unless it is major firewall work and then it goes up.  Coating is extra.  Like I've said in another thread cheap is in the eye of the beholder.  We could throw a set of tubes together in a few hours if you aren't worried about plug maintenance or if the tires hit.  

To be honest we build 9 set of stainless for ever set of mild because of the price difference after coating, resell value on car, and overall life.

The set on the gold nova above actually weighed 12 lbs less than a set of hookers that were on the car and the engine tuneup changed dramatically.

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Re: Custom Header Thread

Post  whatbumper on February 9th 2015, 1:08 pm

yellowhorse7 wrote:Let's take it 1 step further and talk about designing a MAX EFFORT header. N20, N/A, Turbo, whatever.

Merge Collectors, Stepped or no, tube size, equal length or no??????


So many opinions out there on this subject.....what's yours? study

We've done a little of it all.  Tube size for nitrous is "big".  Don't see a real big difference on stepped stuff in the cars we do.  We honestly aren't that concerned with equal length of tubes unless it's NA as we don't see much difference in data on nitrous cars but everyone has different data so I'm sure someone can counter that.  

turbo on the other hand:  we shoot for more equal and try to keep everything tight to each other to hold heat.  primary size is based on cubic inch of motor and not necessarily power output.  we use double slip collectors on turbo stuff unless it is retrofitting an old set of headers like these below.

 

at that time we are more concerned with wastegate placement.


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Re: Custom Header Thread

Post  res0rli9 on February 9th 2015, 1:45 pm

yellowhorse7 wrote:Let's take it 1 step further and talk about designing a MAX EFFORT header. N20, N/A, Turbo, whatever.

Merge Collectors, Stepped or no, tube size, equal length or no??????


So many opinions out there on this subject.....what's yours? study

X2

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Re: Custom Header Thread

Post  richter69 on February 9th 2015, 2:19 pm

ive done like 4 sets and fixin to do another real soon.

x2 on the heavy nos stuff just make um big and let the stuff get out of um asap.
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Re: Custom Header Thread

Post  514F-1 on February 9th 2015, 5:54 pm

Good work guys, having a set of side exits done for my truck now, they just sent me the completed pics, but they are on my phone, i'll get some when they get back from the powdercoater. They look badass even before the ceramic coating. Cool
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Re: Custom Header Thread

Post  70FB on February 9th 2015, 7:57 pm

Suscribed
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Re: Custom Header Thread

Post  gmsmkr on February 9th 2015, 8:01 pm

There is some nice work on this post I have not built any yet but will give it a go soon...keep the pics coming
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Re: Custom Header Thread

Post  whitefield on February 9th 2015, 8:08 pm

study Cool



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Re: Custom Header Thread

Post  cool40 on February 9th 2015, 10:00 pm

2.5" easy to build chassis headers. clown
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Re: Custom Header Thread

Post  whatbumper on February 9th 2015, 11:18 pm

cool40 wrote: 2.5" easy to build chassis headers. clown

Look at all that space. Lol

Look good.

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Re: Custom Header Thread

Post  David Cole on February 10th 2015, 7:02 am

Mine are not equal length, but it doesn't seem to hurt it.



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Re: Custom Header Thread

Post  whatbumper on February 10th 2015, 11:19 am





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Re: Custom Header Thread

Post  whatbumper on February 10th 2015, 11:21 am

We back purge all tubing welding and build our own collectors and mufflers unless customer provided.  We TIG weld everything we do including body modifications we do to limit weld splatter on the car.


We agree with Jon above above nitrous header size. Big and get rid of it quick. The stainless is nice because after a pass you can take the hood off and usually it is cool enough to take plugs out immediately.

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