exhaust header?

blue_crush · Post by **blue_crush** » Fri Jul 06, 2007 5:32 pm

looking for a top mount, stainless steel header. Or a good suggestion on a bottom mount that i can cut the head mount flange off and flip, then reweld.

Post by **DJpowerHaus** » Fri Jul 06, 2007 5:42 pm

This falls under the DIY category as far as I know. I guess this means that I should at least make a jig. I'll see what I can come up with, but it might take all summer.

S0LJAH · Post by **S0LJAH** » Mon Jul 09, 2007 2:14 am

is there anything stoping you turning the turbo 180 degress on the stock manifold?

i have considered doing this with my car and other than the oil and water lines not matching up, custom ones would fix that

i cant see any reason why it shouldnt work,
exhaust flange seems to line up well?or is that an illusion and it seems to just clear my steering box by a couple of mm

S0LJAH · Post by **S0LJAH** » Tue Jul 10, 2007 4:52 am

mattmartindrift wrote:
However, that being said, we have turned an evo3 16g 180* on mike's old street car.

so it can be done then?

would save me alot of cash rather than getting a custom exhaust manifold made up

is it as simple as just turning it round and getting custom water/oil lines?

screemin eagle · Post by **screemin eagle** » Tue Jul 10, 2007 11:32 am

Yes just rotate the turbo 180 deg and make custom oil and water lines

Post by **DJpowerHaus** » Tue Jul 10, 2007 9:36 pm

Can somebody source me some exhaust tubing for a header?

I checked out my SS flange. The ports are obviously ovals. The Width is 53mm the height is 35mm. The circumference of the oval is 146mm. If you took a pipe with a 1 7/8" O.D. and crushed it down into an oval and did some grinding you could get a tight fit into the flange.

What kind of wall thickness should we work with? What size I.D. would be good for a head with stock exhaust ports? I'd be happier giving up performance for reliability. I'd give up horsepower for faster spool. A log manifold would be fine. If I use Schedule 40 pipe, I doubt I could get it hot enough to smash a round pipe into an oval.

How should I do this?

89coltgt · Post by **89coltgt** » Wed Jul 11, 2007 4:39 am

Alot of guys use the sch 10 pipe, it's about 1/8" wall thickness.

blue_crush · Post by **blue_crush** » Sun Jul 15, 2007 5:37 pm

that manifold looks good. nobody knows of any i can cut and flip?
or a good web site that i can get all the bends to make my own.

ShaggyZ · Post by **ShaggyZ** » Sun Jul 15, 2007 8:01 pm

You cut and flip any of them

Here's one: http://dsmparts.com/customer/product.ph ... at=&page=1
Buy, cut, flip, weld, install.

89coltgt · Post by **89coltgt** » Sun Jul 15, 2007 8:23 pm

You can buy weld ells from Mc Master Carr.

blue_crush · Post by **blue_crush** » Sun Jul 15, 2007 8:34 pm

thanx for the info. i think i found one.

Post by **DJpowerHaus** » Mon Jul 16, 2007 3:46 pm

$ 7.18 304 Stainless Sch 10 2.25" radius Bend, 1.9" O.D. .109" wall = 1.682" I.D.: 45735K215
$40.27 304 Stainless Sch 10 1.5" radius Bend, 1.9" O.D. .109" wall = 1.682" I.D.: 45735K323
$17.31 for 12" of 304 Stainless Sch 10 pipe 1.9" O.D. .109" wall = 1.682" I.D.: 4347K351

I guess I'll be sticking with the more sweeping bend. Is 1.68" I.D. too big for a 2.4L turbo engine?

Somebody draw one up in cad!

Bill Hincher · Post by **Bill Hincher** » Mon Jul 16, 2007 9:17 pm

if you guys know how you want the tubing bent up, I would be glad to help you with the bends, I have an exhaust bender as well as a thickwall tubing bender

Post by **DJpowerHaus** » Mon Jul 16, 2007 10:49 pm

If I can get a prototype tacked up by the meet I'll just leave it with you so you can see what you need to do.

Post by **DJpowerHaus** » Wed Oct 31, 2007 10:14 pm

I ordered some pipes and t's from Ace Stainless. Cheaper than MCMasterCarr too.

Post by **DJpowerHaus** » Fri Nov 16, 2007 8:03 pm

Here is what I've got so far. O.D. of the pipe is a little bigger than the I.D. of the manifold and the oval isn't perfect. So this calls for my little friend the die grinder. Might take a while to get it right, but it should be pretty snug when its all fitted up.

Bill Hincher · Post by **Bill Hincher** » Fri Nov 16, 2007 9:02 pm

Its good to see you back at fabricating, DJ dont forget to allow some room for the dry sump system, I want to mount it on the exhaust side, I have the pumps and I have the tester built

Post by **DJpowerHaus** » Fri Nov 16, 2007 11:08 pm

The engine the dry sump will go on is not going to have turbo