OBX headers...what is this tube for?

[Ccmano]

Originally Posted by zr1assassin

Exactly what I was looking for😉 thanks!
You don't by chance remember the cap/thread size do you?

14mm freeze plug. Hard to find. Got it here... added a couple spot welds to keep it in place.

Autohausaz.com

Genuine MercedesExpansion Plug; 14mm OD Freeze Plug
SKU: 11095595-000000004054
P/N: 000000004054
2x$1.88

H

[RussMcB]

Originally Posted by Ccmano

14mm freeze plug. Hard to find. Got it here... added a couple spot welds to keep it in place.

Autohausaz.com

Genuine MercedesExpansion Plug; 14mm OD Freeze Plug
SKU: 11095595-000000004054
P/N: 000000004054
2x$1.88

H

That's a little nicer than my solution. I used a 14mm bolt (not fully threaded).

[zr1assassin]

Originally Posted by Ccmano

14mm freeze plug. Hard to find. Got it here... added a couple spot welds to keep it in place.

Autohausaz.com

Genuine MercedesExpansion Plug; 14mm OD Freeze Plug
SKU: 11095595-000000004054
P/N: 000000004054
2x$1.88

H

Thanks for the info😉

[WVZR-1]

Why wouldn't you ID the thread and go for a threaded solution?

[RussMcB]

Originally Posted by WVZR-1

Why wouldn't you ID the thread and go for a threaded solution?

Mine had no threads, inside or out. It was just a simple tube. Very odd.

[zr1assassin]

Originally Posted by RussMcB

Mine had no threads, inside or out. It was just a simple tube. Very odd.

The threads are on the ID of the coupler, not the tube

[WVZR-1]

Originally Posted by RussMcB

Mine had no threads, inside or out. It was just a simple tube. Very odd.

Not ODD at all - yours was a duplication of the OE and for use with '93+ you could with 'no issues'. See the image in post#11. I don't get the OBX thing. Maybe someone with a '93+ w/EGR might mention how they accomplished EGR function retention when using OBX.

Yours is what I'd have expected

Originally Posted by zr1assassin

The threads are on the ID of the coupler, not the tube

I might have tried to ID the thread and use a mating male fitting of sorts.

I would have thought choosing the option of threading the ID of the tube a better choice could have been made. Your choice works for you so it 'matters NOT'!

[tf95ZR1]

I learned this from Marc Haibeck:
It uses a compression clamp (and special tool)
called a Oetiker clamp. #7 in above drawing.
Look it up!

Found it! Jerry's Gaskets (of course!)

http://www.jerrysgaskets.com/clamp-e...new-90-95-2c4/

zr1assassin: If you use the EGR system, its a compression connection
egr to nipple on exhaust. No threads, stock no nut.