OMG... another bung placement question

[TVeye]

So, I wanna ceramic coat the Stahl header (thinking about Young Guns in Rancho, any experience?)

 

 

Question is... should I weld the bung (AFR) into the header? Seems like there's plenty of room back there.

Or, weld bung into straight pipe after the header?

Don't want to coat and then realize.........

Also, long bung or short bung?

 

[RogerRamJet77]

I used Jet-Hot

[jimk]

Suggest you mount the header in the car and mark it for bung placement.  Get it in the wrong place and the sensor bumps into something.

[jp5Touring]

22 minutes ago, jimk said:

Suggest you mount the header in the car and mark it for bung placement.  Get it in the wrong place and the sensor bumps into something.

 

This ^^^  and bung size is dependant on what O2 sensor you use.  I think the smaller one is more  common.

That's what I have on my header with an O2 AIM sensor. 

[TVeye]

1 hour ago, rockyford77 said:

I used Jet-Hot

 

Looks good, and your header took a road trip to North Carolina

 

...and you're right about the placement. I'm just more interested in getting it coated than

I am about dealing with the old system, right now.

[Georges]

On 3/16/2021 at 4:32 PM, jimk said:

Suggest you mount the header in the car and mark it for bung placement.  Get it in the wrong place and the sensor bumps into something.

Agreed. I welded in a bung yesterday while the header was mounted. I have a Getrag 245 and it is wide. I had to weld in the bung a few inches downstream of the header because of access issues (used a new right-angle drill). You might be OK but consider what tranny you will eventually use.

[rcf925]

They say optimum is 2ft. back from exhaust port, Mines a little further back for access and it works fine

[TVeye]

I ended up going this route.

Bung will be placed and welded then I can rotate accordingly before cinching down

and then tailpiece welded to the rest of the system.

 

[Georges]

?

[man_mark_7]

Don't forget sensor is supposed to be mounted 10deg or more above horizontal so that tip is lower than wired end.

[Georges]

[Georges]

Here's mine

[Tdh]

@rockyford77

what did jet hot charge you to coat the header? 

[TVeye]

The place "Young Guns" in Rancho charged me $125 to do my Stahl.