We are currently running on the new domain and server: www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

First time header build

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Locked
77cruiser
Guru
Guru
Posts: 1250
Joined: Fri Dec 29, 2006 10:32 pm
Location: I Falls MN
Contact:

First time header build

Post by 77cruiser » Fri Nov 28, 2014 9:03 am

I'm going give it a shot. How many hours can be expected for a first timer?
I'm thinking at minimum 100 hrs. :?:
Jim

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 9:12 am

You can definitely spend that much time on them.

There is a lot of good information on header construction and welding to be found on Burn's Stainless website as well as Header's by Ed.

Use the biggest radius bends that you can physically fit
an inch or two short or long from target isn't as important as having a gentle swooping tube
don't start out with a tube that has any larger area than the exhaust port you are attaching to
absolutely do not use a collector any larger in diameter than absolutely necessary

most importantly: do a search on everything ever posted by Calvin Elston (exhausted), so much to learn there.
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

77cruiser
Guru
Guru
Posts: 1250
Joined: Fri Dec 29, 2006 10:32 pm
Location: I Falls MN
Contact:

Re: First time header build

Post by 77cruiser » Fri Nov 28, 2014 9:21 am

I've read a lot of Calvin's posts just trying to learn it is a challenge, maybe I'm getting too old for this stuff. :lol:
I'm using Pipemax for the dimensions. The collector diam. from P/M wants 3.17, so going to 3 in. won't be a problem.
Jim

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 9:39 am

One more thing, you can/should spend a lot of time making sure that every weld joint fits perfectly. No step or mis-match allowed. I use a simple pipe expander to gently expand the smaller pipe or to make a slightly oval cross-section round. Even though you will be using mandrel bends the cross-section in the bend is smaller (slightly) than the straight section so you need to bump them a little at the joint.
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 9:47 am

Here is a set I'm working on right now for a 409 in a 55 Chevy with a 4-speed and rack&pinion steering. I didn't install the stupid ass rack either. Also, the customer was concerned that they "look correct side to side" so compromises that were made on the left side because of the rack were carried over to the right side so they looked somewhat symmetrical.
409 Chev headers 2.jpg
409 Chev headers 5.jpg
409 Chev headers 6.jpg
409 Chev headers 4.jpg
You do not have the required permissions to view the files attached to this post.
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

1972ho
Expert
Expert
Posts: 797
Joined: Thu Nov 21, 2013 12:52 am
Location:

Re: First time header build

Post by 1972ho » Fri Nov 28, 2014 10:13 am

Wow good looking header,And long to why are they so long for looks are performance .

77cruiser
Guru
Guru
Posts: 1250
Joined: Fri Dec 29, 2006 10:32 pm
Location: I Falls MN
Contact:

Re: First time header build

Post by 77cruiser » Fri Nov 28, 2014 10:13 am

I know who that's for. :D
Jim

bigfoot
Member
Member
Posts: 164
Joined: Thu Mar 22, 2012 9:45 pm
Location:

Re: First time header build

Post by bigfoot » Fri Nov 28, 2014 10:19 am

Dies headers by Ed sell flanges to bolt onto head ?? I have dart jr heads on a sb ford..it has to bolt patterns..my headers use the inside bolts...so the headers pinch off the sides of my ports..i guess this hurts the flow ??

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 10:35 am

1972ho wrote:Wow good looking header,And long to why are they so long for looks are performance .
The header pictured is 32" (+/- 1/2") on tubes 4,6,8. Tube #2 is 37" (this was a compromise to make it look similar to the left side).

I don't think that's out of line for a street car header that will operate mostly at part throttle cruise type applications.

The other side is quite a bit more different with 2 tubes at 31-32", one at 35" and one at 38". It's what I had to do to make it fit and look half decent.
Last edited by 900HP on Fri Nov 28, 2014 10:39 am, edited 1 time in total.
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 10:35 am

bigfoot wrote:Dies headers by Ed sell flanges to bolt onto head ?? I have dart jr heads on a sb ford..it has to bolt patterns..my headers use the inside bolts...so the headers pinch off the sides of my ports..i guess this hurts the flow ??
Check with SPD exhaust
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

User avatar
900HP
Guru
Guru
Posts: 1984
Joined: Sun Jul 04, 2010 6:56 pm
Location: Fargo, North Dakota

Re: First time header build

Post by 900HP » Fri Nov 28, 2014 10:37 am

77cruiser wrote:I know who that's for. :D
LOL. call me if you have any questions, I'll help if I can. I still have a lot to learn so I'm by no means the end-all be-all.
Throttle's Performance
(701)893-5010
https://www.facebook.com/pages/Throttle ... 1996281602

jacksoni
Guru
Guru
Posts: 1042
Joined: Sat Dec 18, 2004 2:54 pm
Location: Maryland

Re: First time header build

Post by jacksoni » Fri Nov 28, 2014 11:20 am

These guys have a lot of parts and flanges and a good video series about building your own. On the website and youtube both. http://www.stainlessheaders.com/index.aspx

User avatar
MadBill
HotPass
HotPass
Posts: 14563
Joined: Tue Nov 15, 2005 10:41 am
Location: The Great White North

Re: First time header build

Post by MadBill » Fri Nov 28, 2014 6:40 pm

77cruiser wrote:I'm going give it a shot. How many hours can be expected for a first timer?
I'm thinking at minimum 100 hrs. :?:
My first (and last) time 30 years ago took me 160 hours, but I built the flat collectors from sheet metal and made oval section megs by splitting round tubes and welding in tapered flat stock, which I then bent and twisted around the cross member before realizing that it would have been far easier to build the megs straight and do all the tweaking on the transmission support. #-o
Felix, qui potuit rerum cognscere causas.

Happy is he who can discover the cause of things.

77cruiser
Guru
Guru
Posts: 1250
Joined: Fri Dec 29, 2006 10:32 pm
Location: I Falls MN
Contact:

Re: First time header build

Post by 77cruiser » Fri Nov 28, 2014 8:32 pm

I should've said more like 100-200 hrs. I gonna try to keep track, so if someone asks. :shock:
Jim

lada ok
Guru
Guru
Posts: 1089
Joined: Fri May 10, 2013 9:20 pm
Location: te puke, bay of plenty, new zealand

Re: First time header build

Post by lada ok » Fri Nov 28, 2014 9:03 pm

If at all possible you want the flanges to be counter bored 3 mm to take the pipe o/d or bored right through, then the pipe slips into the flange and is welded at the back side..... no mess and looks rea factory

There are header pipe kits that have allow you to run up a dummy set so you can check out what's what
Or go to your local plumbing merchant and you should be able to buy PVC plastic pipe and elbows to play around with
Wouldn't worry if each pipe isn't exactly the same length
Think about just tack welding the thing up, then take it to someone that can TIG weld ... you can use an old head as a jig one end & known distances at the other

Locked