| Intake
Common Name |
Part
Number |
End
Casting |
Jacket |
Carb Flange |
Heat
riser tubing |
Intake
Runner Tubing |
Years
used |
Other
Notes |
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| Non
jacketed K |
None
on intake.
Documented
part number references:
1
29 401 (1945) |
Face:
1.125-1.60 OD (~29mm)
Casting: 31-32mm wide overall. Some with Cogwheel logo,
some with std. round logo. Brazed
onto intake tubing. |
None. Heat riser with continuous bead weld to intake
runner, both front and back |
26mm
ID, no flare on carb riser.
Bead
welded |
.710
18mm
Heat
riser flanges are bead welded from top |
.907
23
mm
|
-
March 1950 |
End
castings most often will have Cogwheel VW logos.
Carb riser tubing is 1.070/ 27mm
Some
heat riser flanges have flat bevel cuts around bolt holes for
head seats. Some do not. |
| Jacketed
K |
None
on intake.
|
Face:
1.125-1.60 OD (~29mm)
Casting: 31-32mm wide overall. Some with Cogwheel logo,
some with std. round VW logo.
Brazed onto intake tubing. |
Symmetrical
about the carb riser, 224mm long. Some with faint, std. round VW logo on back
side, some with no logo. Some with 4 very small numbers stamped
along top
Sprue location evident on top right side of jacket. Finish
is typically poor with grind marks and casting voids often visible. |
26mm
ID, no flare on carb riser |
.710
18mm
Heat
riser flanges are bead welded from top |
.907
23
mm |
March
1950 until date unknown. Likely
out of production with introduction of the Zwitter
(October 1952) but perhaps earlier. |
Narrow
heatriser tubing, about 18mm or .710.
Some
heat riser flanges have flat bevel cuts around bolt holes for
head seats. Some do not. |
| 53
Only Intake |
2
or 3 followed by the round VW Logo, and 08.02 |
1.125
OD (25hp) Std. round VW
logo |
Grooved,
figure 8 casting (cross-section resembles the number 8). Sprue cut on bottom
of casting.
On
some castings is 2 or 3 followed by the round VW Logo, and
08.02
Others
have 3 x 3 PN??
|
28mm
ID, flared carb riser below, press fit |
.710
18mm
Heat
riser flanges are pressed on |
.907
23
mm |
Unknown,
but theorized that it followed the jacketed K manifold in production,
and has been found on many Zwitters
and 53 model Beetles. |
Narrow
heatriser tubing, about 18mm or .710.
This
intake is characterized by the heatriser
following alongside the intake runner on the right side all the
way to the where the intake runner curves down to the head.
Here, the heat riser tubing takes a sharp 90 degree bend
towards the rear of the engine bay and down to the exhaust port.
The
last of the thin walled heat riser tubing intakes. |
| 701E
Intake |
111
129 701E |
Face:
1.250 OD (36hp) Std. round
logo
Casting: 33mm wide overall. |
Sprue cut on bottom of casting. |
28mm
ID, flared carb riser below, press fit |
.815
20mm
Heat
riser flanges are pressed on |
.907
23
mm |
Start
with the first 36hp engine Jan 1954 |
Thicker
heatriser tubing, about 20.5mm or .815. This is the common 36Hp intake. First of the thick walled heat riser tubing
intakes. |
| The
701, 25hp |
111
129 701 |
Face:
1.125-1.60 OD (~29mm)
Casting: 31-32mm wide overall. Std. round VW logo.
Pressed onto intake tubing. |
Asymmetrical
jacket 139mm wide. Offset
to the left of the carbriser as viewed
from the back of the car. Has
VW logo and part number 111 129 701
embossed on the back. E
at the end of part number is ground off. |
28mm
ID, flared carb riser below, press fit |
.815
20mm
Heat
riser flanges are pressed on |
.907
23
mm |
Post
production replacement part. |
This
intake is easily mistaken as a 36 701E at a casual glance. What distinguishes it are the narrow end castings
with 1.125-1.60 OD faces, and the part number on the back ending
with 701. In fact, the
casting is numbered 111 129 701E, but the E is ground off.
The
common theory is that this intake was made coincident with the
701E, but with 25 end castings, and was VWs replacement part
for all 25 hp engines who had thin walled heat riser intakes and
suffered dangerous heat riser perforation. |
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