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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
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 |
|
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 |
|
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 |
|
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 |
|
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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