Pre-heat tube to left stale air heater box

[EODTECH*]

How does the preheat tube connect to this style heater box? Or does it?

TIA

[House]

Weird, that looks like a bastard 40 horse style.
You need one like this:

[EODTECH*]

[House]

How good at welding are you?
There may be an easier way. Hope somebody will chime in.

[EODTECH*]

I'm not a welder. But my tech that works on my Typ 1 is exc. Is there a solution?

[h~moto]

I'm not familiar with a 40 hp engine but the 1966 1300 engine did not get the preheat air directly from the heater box until mid year. I'm guessing that earlier engine also did not get the preheat air directly from the heater box. Early 1300 engines got the preheat from air that cooled the cylinders on the left side. The picture I found shows the location of the pipe that draws the warmed air in (before the muffler is installed). I believe that the part is installed AFTER the muffler has been put on the exhaust studs. There will also be a hole in the lower cylinder tin that allows the tube to pass through.

More info here:
https://www.thesamba.com/vw/forum/viewtopic.php?t=726839&highlight=preheat+tube

[Ovally]

VW left stale air heater box without preheat = 111 255 101A
VW left stale air heater box with preheat = 113 255 101A

NOS VW 113 255 101A

Regards.
_________________
VW Bug Oval 1953
VW Bug 1200 D motor
Porsche 911S MFI 1970
Mazda 929 Hardtop 1977
Mercedes SLC 180 Roadster 2018

[EODTECH*]

Thanks. Short back story. The car was 100% OE when I bought it. Virtually nothing major had been changed out engine/exhaust-wise. All OE tins in the engine bay. And the tin at the rear HAS the opening and grommet for the preheat tube to fit thru.

I did not notice during the restoration, exactly which style new heater boxes were installed. (I'll look today.) But according to the restoration/purchase records the NON-nippled box was installed on the left side. Argh.

Short of replacing that entire heater box with a new one WITH the required nipple...I was wondering if it's just a matter of boring a hole in the box...welding on the nipple and attaching the preheat tube.

Anybody even done that? Or heard of that being done?

[EODTECH*]