So I have the old collector flange
Cut off, cleaned up, ready to weld
And I’ve got a nice good joint here
To my new exhaust pipe
So, first thing were actually going to do
Is take this collector flange
And bolt it back to the exhaust manifold
So the collector flange is back
Bolted in place under the truck
And now I need
We’re going to work on the downpipe
But I don’t know how much of this curve over here
I’m going to need to cut
Or where I’m going to need to cut it
Because the pipe does come down at an angle
So it’s going to be, let’s say for example
A 45 degree angle
That would be parallel with the road
With the ground
So, I don’t have enough room
What I need to do is measure…
Get the length of this down piece
Before the bend where I need to cut
So I don’t have enough room
So I’m going to cut off the leg of this U-bend
I want to try and preserve as much
Of this mandrel bend as possible
Because I’m probably going to need these pieces
Further on down the exhaust system
Going over the axle and things like that
So, like I said, I’m going to cut this leg off
And a good way to get a nice, straight cut
On a round surface
Is to take a piece of paper
And wrap it around the tube
And when the edges of the paper line up
You’ll know that you have about
As straight of a line as you can get
So then you just trace that line
With a marker
All the way around
Cut it off with the cutting disc
And move on
Ok, I wanted to take a time out here
To bring the camera under here and show you
It’s really difficult up here at the front of the engine
Or at least underneath the exhaust
To get the camera and the lights
And me, and pieces of tubing and everything
So, what I’ve got here
This is the first piece coming off the collector flange
It’s just a very shallow bend
And it’s going to get welded onto the flange
And it’s going to get directed
Laterally out towards the side of the vehicle
And then rearward, towards the back of the truck
Now really, one of the reasons for that
Is I’ve got a clearance issue right here
Against my oil pan
If I try and put a straight piece in there
It bumps up against the side
Right in this area
So I could just dent the pipe
And allow for that clearance
And that’s what the factory did
You can see in the previous video
There is a small dent in the pipe
But I’m going to knock out two birds with one stone
And I’ll show you here in a minute the other bird
But I’m going to use this piece off the collector
Like I said, going to go laterally to the side of the vehicle
And then rearward
And then I’ll have another piece coming down
And I’ll get the rest of the pieces
Set up and show you that
So I’ve got my straight pipe
Mounted up under the truck
And it’s just sitting there on these stands
Now I’m not sure
These are not jack stands
I picked them up at a garage sale
I believe they are leveling stands
For an RV or a mobile home
Something like that
They’re certainly not strong enough to support
The weight of a vehicle
But for holding up a 4 foot piece of exhaust pipe
They’re perfect
And they’re adjustable
They’re threaded
The shaft is threaded
And you just spin that little
Long, basically nut
And you can adjust the height
So, anyway, I’ve got it roughly in place
The vertical… It’s set vertically
And it’s set side-to-side
But the fore and aft might need to be adjusted
But you can’t see in this shot
The header collector
But basically I need to make a piece
That comes down from the header collector
And joins in with this piece of exhaust tubing
So, right here you can see that straight piece of tubing
And up there, of course you can see the collector
And I’ve already gone ahead and I tack welded
That little shorty piece I showed you earlier
To the collector flange itself
Now I didn’t put any witness marks
Or anything on here… Alignment marks
Mainly because I have 360 degrees of motion
Of rotation with this collector flange
So I just tack welded it in place
So, I’m just going to go ahead and
Bolt this in place loosely
So that I do have the ability to rotate this
And then we’re going to have a piece
That goes from here
Down here to this straight piece of exhaust tubing
I bolted the collector back into place
And like I said, I’ve got complete
Rotation of this collector here
So I can adjust this as I need it
So here is my connector piece
It’s just a little…
It’s the long leg
I didn’t cut any length off the leg here
And then we’ve got the bend
And I cut a little section of the bend out
This will need to be dressed a little bit more
But for right now it’s pretty close to
What I need it to be
So, what I’m going to check for
Is, do I need to cut any off of this leg
Is my length good
And is my cut here
Good to join up with this straight piece
So, kinda put this in place
And find
What I need to do to modify this